Mon Jun 15 23:39:24 1998 Craig Burley <burley@gnu.org>

[official-gcc.git] / gcc / f / ChangeLog

Mon Jun 15 23:39:24 1998  Craig Burley  <burley@gnu.org>

        * Make-lang.in (f/g77.info): Use -f when removing
        pre-existing Info files, if any.  (This rm command
        can go away once makeinfo has been changed to delete
        .info-N files beyond the last one it creates.)

        * Make-lang.in ($(srcdir)/f/intdoc.texi): Compile
        using $(INCLUDES) macro to get the new hconfig.h
        and system.h headers.  [Instead of change below.]

1998-16-19  Manfred Hollstein  <manfred@s-direktnet.de>

        * Makefile.in ($(srcdir)/f/intdoc.texi): Add $(INCLUDES).

Mon Jun 15 22:21:57 1998  Craig Burley  <burley@gnu.org>

        Cutover to system.h:
        * Make-lang.in:
        * Makefile.in:
        * ansify.c:
        * bad.c:
        * bld.c:
        * com.c:
        * com.h:
        * expr.c:
        * fini.c:
        * g77spec.c:
        * implic.c:
        * intdoc.c:
        * intrin.c:
        * lex.c:
        * lex.h:
        * parse.c:
        * proj.c:
        * proj.h:
        * src.c:
        * src.h:
        * stb.c:
        * ste.c:
        * target.c:
        * top.c:
        * system.j: New file.

        Use toplev.h where appropriate:
        * Make-lang.in:
        * Makefile.in:
        * bad.c:
        * bld.c:
        * com.c:
        * lex.c:
        * ste.c:
        * top.c:
        * toplev.j: New file.
        
        Conditionalize all dumping/reporting routines so they don't
        get built for gcc/egcs:
        * bld.c:
        * bld.h:
        * com.c:
        * equiv.c:
        * equiv.h:
        * sta.c:
        * stt.c:
        * stt.h:
        * symbol.c:
        * symbol.h:

        Use hconfig.h instead of config.h where appropriate:
        * Makefile.in (proj-h.o): Compile with -DUSE_HCONFIG.
        * fini.c: Define USE_HCONFIG before including proj.h.

        * Makefile.in (deps-kinda): Redirect stderr to stdout,
        to eliminate diagnostics vis-a-vis g77spec.c.

        * Makefile.in: Regenerate dependencies via deps-kinda.

        * lex.c (ffelex_file_fixed, ffelex_file_free): Eliminate
        apparently spurious warnings about uninitialized variables
        `c', `column', and so on.

Sat Jun 13 03:13:18 1998  Craig Burley  <burley@gnu.org>

        * g77spec.c (lang_specific_driver): Print out egcs
        version info first, to be compatible with what some
        test facilities expect.

Wed Jun 10 13:17:32 1998  Dave Brolley  <brolley@cygnus.com>

        * top.h (ffe_decode_option): New argc/argv interface.
        * top.c (ffe_decode_option): New argc/argv interface.
        * parse.c (yyparse): New argc/argv interface for ffe_decode_option.
        * com.c (lang_decode_option): New argc/argv interface.

Mon Jun  1 19:37:42 1998  Craig Burley  <burley@gnu.org>

        * com.c (ffecom_init_0): Fix setup of INTEGER(KIND=7)
        pointer type.
        * info.c (ffeinfo_type): Don't crash on null type.
        * expr.c (ffeexpr_fulfill_call_): Don't special-case
        %LOC(expr) or LOC(expr).
        Delete FFEGLOBAL_argsummaryPTR.
        * global.c, global.h: Delete FFEGLOBAL_argsummaryPTR.

Thu May 28 21:32:18 1998  Craig Burley  <burley@gnu.org>

        Restore circa-0.5.22 capabilities of `g77' driver:
        * Make-lang.in (g77spec.o): Depend on f/version.h.
        (g77version.o): New rule to compile g77 version info.
        (g77$(exeext)): Depend on and link in g77version.o.
        * g77spec.c: Rewrite to be more like 0.5.22 version
        of g77.c, making filtering of command line smarter
        so mixed Fortran and C (etc.) can be compiled, verbose
        version info can be obtained, etc.
        * lang-specs.h (f77-version): New "language" to support
        "g77 -v" command under new gcc 2.8 regime.
        * lex.c (ffelex_file_fixed): If -fnull-version, just
        substitute a "source file" that prints out version info.
        * top.c, top.h: Support -fnull-version.

        * lang-specs.h: Use "%O" instead of OO macro to specify
        object extension.  Remove old stringizing cruft.

        * Make-lang.in (g77.c, g77spec.o, g77.o, g77$(exeext),
        g77-cross$(exeext), f771,
        $(srcdir)/f/g77.info, $(srcdir)/f/g77.dvi,
        $(srcdir)/f/intdoc.texi,
        f77.install-common, f77.install-info, f77.install-man,
        f77.uninstall, $(G77STAGESTUFF), f77.stage1, f77.stage2,
        f77.stage3, f77.stage4, f77.distdir): Don't do anything
        unless user specified "f77" or "F77" in $LANGUAGES either
        during configuration or explicitly.  For convenience of
        various tests and to work around lack of the assignment
        "LANGUAGES=$(BOOT_LANGUAGES)" in the "make stage1" command
        of "make bootstrap" in gcc, use a touch file named "lang-f77"
        to communicate whether this is the case.

        * Make-lang.in (F77_FLAGS_TO_PASS): Delete this macro,
        replace with minimal expansion of its former self in
        each of the two instances where it was used.

        * Makefile.in (HOST_CC): Delete this definition.

        * com.c (index, rindex): Delete these declarations.

        * proj.h: (isascii): Delete this.

        * Make-lang.in (f77.install-common): Warn if `f77-install-ok'
        flag-file exists, since it no longer triggers any activity.

        Rename libf2c.a and f2c.h to libg2c.a and g2c.h,
        normalize and simplify g77/libg2c build process:
        * Make-lang.in: Remove all support for overwriting
        /usr/bin/f77 etc., or whatever the actual names are
        via $(prefix) and $(local_prefix).  (g++ overwrites
        /usr/bin/c++, but then it's often the only C++ compiler
        on the system; f77 often exists on systems that are
        installing g77.)
        (f77.realclean): Remove obsolete target.
        (g77.c, g77$(exeext)): Minor changes to look more like g++'s
        stuff.
        (f771): Now built with srcdir=gcc/f, not srcdir=gcc, to be
        more like g++ and such.
        (f/Makefile): Removed, as g++ doesn't need this rule.
        (f77.install-common): No longer install f77, etc.
        (f77.install-man): No longer install f77.1.
        (f77.uninstall): No longer uninstall f77, f77.1, etc.
        (f77.stage1, f77.stage2, f77.stage3, f77.stage4): Do work
        only if "f77" appears in $(LANGUAGES).
        (Note: gcc's Makefile.in's bootstrap target should set
        LANGUAGES=$(BOOT_LANGUAGES) when making the stage1 target.)
        * Makefile.in: Update vis-a-vis gcc/cp/Makefile.in.
        (none): Remove.
        (g77-only): Relocate.
        (all.indirect, f771, *.o): Now assumes current directory
        is this dir (gcc/f), not the parent directory.
        (TAGS): Remove "echo 'parse.y,0'  >> TAGS ;" line.
        * config-lang.in: Delete commented-out code.
        Fix stagestuff definition.  Add more stuff to
        diff_excludes definition.  Don't create any directories.
        Set outputs to f/Makefile, to get variable substition
        to happen (what does that really do, anyway?!).
        * g77spec.c: Rename libf2c to libg2c.

        * com.h: Remove all of the gcc back-end decls,
        since egcs should have all of them correct.

        * com.c: Include "proj.h" before anything else,
        as that's how things are supposed to work.
        * ste.c: Ditto.

        * bad.c: Include "flags.j" here, since some diagnostics
        check flag_pedantic_errors.

        * Makefile.in (f/*.o): Rebuild dependencies via
        deps-kinda.

        * output.j: New source file.
        * Make-lang.in (F77_SRCS): Update accordingly.
        * Makefile.in (OUTPUT_H): Ditto.
        (deps-kinda): Ditto.
        * com.c: Include "output.j" here.
        * lex.c: Ditto.

Mon May 25 03:34:42 1998  Craig Burley  <burley@gnu.org>

        * com.c (ffecom_expr_): Fix D**I and Z**I cases to
        not convert (DOUBLE PRECISION) D and (DOUBLE COMPLEX) Z
        to INTEGER.  (This is dead code here anyway.)

Sat May 23 06:32:52 1998  Craig Burley  <burley@gnu.org>

        * com.c (ffecom_finish_symbol_transform_): Don't transform
        statement (nested) functions, to avoid gcc compiling them
        and thus producing linker errors if they refer to undefined
        external functions.  But warn if they're unused and -Wunused.
        * bad.def (FFEBAD_SFUNC_UNUSED): New diagnostic.

Tue May 19 14:52:41 1998  Craig Burley  <burley@gnu.org>

        * bad.def (FFEBAD_OPEN_UNSUPPORTED, FFEBAD_INQUIRE_UNSUPPORTED,
        FFEBAD_READ_UNSUPPORTED, FFEBAD_WRITE_UNSUPPORTED,
        FFEBAD_QUAD_UNSUPPORTED, FFEBAD_BLOCKDATA_STMT,
        FFEBAD_TRUNCATING_CHARACTER, FFEBAD_TRUNCATING_HOLLERITH,
        FFEBAD_TRUNCATING_NUMERIC, FFEBAD_TRUNCATING_TYPELESS,
        FFEBAD_TYPELESS_OVERFLOW): Change these from warnings
        to errors.

Tue May 19 14:51:59 1998  Craig Burley  <burley@gnu.org>

        * Make-lang.in (f77.install-info, f77.uninstall):
        Use install-info as appropriate.

Tue May 19 12:56:54 1998  Craig Burley  <burley@gnu.org>

        * com.c (ffecom_init_0): Rename xargc to f__xargc,
        in accord with same-dated change to f/runtime.

Fri May 15 10:52:49 1998  Craig Burley  <burley@gnu.org>

        * com.c (ffecom_convert_narrow_, ffecom_convert_widen_):
        Be even more persnickety in checking for internal bugs.
        Also, if precision isn't changing, just return the expr.

        * expr.c (ffeexpr_token_number_): Call
        ffeexpr_make_float_const_ to make an integer.
        (ffeexpr_make_float_const_): Handle making an integer.

        * intrin.c (ffeintrin_init_0): Distinguish between
        crashes on bad arg base and kind types.

Thu May 14 13:30:59 1998  Craig Burley  <burley@gnu.org>

        * Make-lang.in (f/expr.c): Now depends on f/stamp-str.
        * expr.c: Use ffestrOther in place of ffeexprDotdot_.
        * str-ot.fin: Add more keywords for expr.c.

        * intdoc.c (dumpimp): Trivial fix.

        * com.c (ffecom_expr_): Add ltkt variable for clarity.

Wed May 13 13:05:34 1998  Craig Burley  <burley@gnu.org>

        * Make-lang.in (G77STAGESTUFF): Add g77.o, g77spec.o,
        and g77version.o.
        (f77.clean): Add removal of g77.c, g77.o, g77spec.o,
        and g77version.o.
        (f77.distclean): Delete removal of g77.c.

Tue Apr 28 09:23:10 1998  Craig Burley  <burley@gnu.org>

        Fix 980427-0.f:
        * global.c (ffeglobal_ref_progunit_): When transitioning
        from EXT to FUNC, discard hook, since the decl, if any, is
        probably wrong.

Sun Apr 26 09:05:50 1998  Craig Burley  <burley@gnu.org>

        * com.c (ffecom_char_enhance_arg_): Wrap the upper bound
        (the PARM_DECL specifying the length of the CHARACTER*(*)
        dummy arg) in a variable_size invocation, to prevent
        dwarf2out.c crashing when compiling code with -g.

Sat Apr 18 05:03:21 1998  Craig Burley  <burley@gnu.org>

        * com.c (ffecom_check_size_overflow_): Ignore overflow
        as well if dummy argument.

Fri Apr 17 17:18:04 1998  Craig Burley  <burley@gnu.org>

        * version.h: Get rid of the overly large headers
        here too, as done in version.c.

Tue Apr 14 14:40:40 1998  Craig Burley  <burley@gnu.org>

        * com.c (ffecom_start_progunit_): Mark function decl
        as used, to avoid spurious warning (-Wunused) for ENTRY.

Tue Apr 14 14:19:34 1998  Craig Burley  <burley@gnu.org>

        * sta.c (ffesta_second_): Check for CASE DEFAULT
        as well as CASE, or it won't be recognized.

Mon Mar 23 21:20:35 1998  Craig Burley  <burley@gnu.org>

        * version.c: Reduce to a one-line file, like
        gcc's version.c, since there's really no content
        there.

Mon Mar 23 11:58:43 1998  Craig Burley  <burley@gnu.org>

        * bugs.texi: Various updates.

        * com.c (ffecom_tree_canonize_ptr_): Fix up spacing a bit.

Mon Mar 16 21:20:35 1998  Craig Burley  <burley@gnu.org>

        * expr.c (ffeexpr_sym_impdoitem_): Don't blindly
        reset symbol info after calling ffesymbol_error,
        to avoid crash.

Thu Mar 12 13:50:21 1998  Craig Burley  <burley@gnu.org>

        * lang-options.h: Sort all -f*-intrinsics-* options,
        for consistency with other g77 versions.

Mon Mar 16 15:38:50 1998  Craig Burley  <burley@gnu.org>

        * Version 0.5.22 released.

Mon Mar 16 14:36:02 1998  Craig Burley  <burley@gnu.org>

        Make -g work better for ENTRY:
        * com.c (ffecom_start_progunit_): Master function
        for ENTRY-laden procedure is not really invented,
        so it can be debugged.
        (ffecom_do_entry_): Push/set/pop lineno for each
        entry point.

Sun Mar 15 05:48:49 1998  Craig Burley  <burley@gnu.org>

        * intrin.def: Fix spelling of mixed-case form
        of `CPU_Time' (was `Cpu_Time').

1998-03-09  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in: Set CONFIG_SITE to a non-existent file since
        /dev/null loses with bash 2.0/autoconf 2.12.  Put
        F77_FLAGS_TO_PASS before CC.

Sun Mar  8 16:35:34 1998  Craig Burley  <burley@gnu.org>

        * intrin.def: Use tabs instead of blanks more
        consistently (excepting DEFGEN section for now).

Sat Feb 28 15:24:38 1998  Craig Burley  <burley@gnu.org>

        * intrin.def: Make CPU_TIME's arg generic real to be just
        like SECOND_subr.

Fri Feb 20 12:45:53 1998  Craig Burley  <burley@gnu.org>

        * expr.c (ffeexpr_token_arguments_): Make sure
        outer exprstack isn't null.

1998-02-16  Dave Love  <d.love@dl.ac.uk>

        * Makefile.in (f/fini): Don't use -W -Wall with HOST_CC.

Sun Jan 11 02:14:47 1998  Craig Burley  <burley@gnu.org>

        Support FORMAT(I<1+2>) (constant variable-FORMAT
        expressions):
        * bad.def (FFEBAD_FORMAT_VARIABLE): New diagnostic.
        * std.c (ffestd_R1001rtexpr_): New function.
        (ffestd_R1001dump_, ffestd_R1001dump_1005_1_,
        ffestd_R1001dump_1005_2_, ffestd_R1001dump_1005_3_,
        ffestd_R1001dump_1005_4_, ffestd_R1001dump_1005_5_,
        ffestd_R1001dump_1010_2_, ffestd_R1001dump_1010_3_,
        ffestd_R1001dump_1010_4_, ffestd_R1001dump_1010_5_):
        Use new function instead of ffestd_R1001error_.

        * stb.c (ffestb_R10014_, ffestb_R10016_, ffestb_R10018_,
        ffestb_R100110_): Restructure `for' loop for style.

        Fix 970626-2.f by not doing most back-end processing
        when current_function_decl is an ERROR_MARK, and by
        making that the case when its type would be an ERROR_MARK:
        * com.c (ffecom_start_progunit_, finish_function,
        lang_printable_name, start_function,
        ffecom_finish_symbol_transform_): Test for ERROR_MARK.
        * std.c (ffestd_stmt_pass_): Don't do any downstream
        processing if ERROR_MARK.

        * Make-lang.in (f77.install-common): Don't install, and
        don't uninstall existing, Info files if f/g77.info
        doesn't exit.  (This is a somewhat modified version
        of an egcs patch on 1998-01-07 12:05:51 by Bruno Haible
        <bruno@linuix.mathematik.uni-karlsruhe.de>.)

Fri Jan  9 19:09:07 1998  Craig Burley  <burley@gnu.org>

        Fix -fpedantic combined with `F()' invocation,
        also -fugly-comma combined with `IARGC()' invocation:
        * bad.def (FFEBAD_NULL_ARGUMENT_W): New diagnostic.
        * expr.c (ffeexpr_finished_): Don't reject null expressions
        in the argument-expression context -- let outer context
        handle that.
        (ffeexpr_token_arguments_): Warn about null expressions
        here if -fpedantic (as appropriate).
        Obey -fugly-comma for only external-procedure invocations.
        * intrin.c (ffeintrin_check_): No longer ignore explicit
        omitted trailing args.

Tue Dec 23 14:58:04 1997  Craig Burley  <burley@gnu.org>

        * intrin.c (ffeintrin_fulfill_generic): Don't generate
        FFEBAD_INTRINSIC_TYPE for CHARACTER*(*) intrinsic.

        * com.c (ffecom_gfrt_basictype):
        (ffecom_gfrt_kindtype):
        (ffecom_make_gfrt_):
        (FFECOM_rttypeVOIDSTAR_): New return type `void *', for
        the SIGNAL intrinsic.
        * com-rt.def (FFECOM_rttypeSIGNAL): Now returns `void *'.
        * intdoc.c: Replace `p' kind specifier with `7'.
        * intrin.c (ffeintrin_check_, ffeintrin_init_0): Replace
        `p' kind specifier with `7'.
        * intrin.def (FFEINTRIN_impLOC, FFEINTRIN_impSIGNAL_func,
        FFEINTRIN_impSIGNAL_subr): Replace `p' specifier with `7'.
        Also, SIGNAL now returns a `void *' status, not `int'.

        Improve run-time diagnostic for "PRINT '(I1', 42":
        * com.c (ffecom_char_args_x_): Renamed from ffecom_char_args_,
        which is now a macro (to avoid lots of changes to other code)
        with new arg, ffecom_char_args_with_null_ being another new
        macro to call same function with different value for new arg.
        This function now appends a null byte to opCONTER expression
        if the new arg is TRUE.
        (ffecom_arg_ptr_to_expr): Support NULL length pointer.
        * ste.c (ffeste_io_cilist_):
        (ffeste_io_icilist_): Pass NULL length ptr for
        FORMAT expression, so null byte gets appended where
        feasible.
        * target.c (ffetarget_character1):
        (ffetarget_concatenate_character1):
        (ffetarget_substr_character1):
        (ffetarget_convert_character1_character1):
        (ffetarget_convert_character1_hollerith):
        (ffetarget_convert_character1_integer4):
        (ffetarget_convert_character1_logical4):
        (ffetarget_convert_character1_typeless):
        (ffetarget_hollerith): Append extra phantom null byte as
        part of FFETARGET-NULL-BYTE kludge.

        * intrin.def (FFEINTRIN_impCPU_TIME): Point to
        FFECOM_gfrtSECOND as primary run-time routine.

Mon Dec 22 12:41:07 1997  Craig Burley  <burley@gnu.org>

        * intrin.c (ffeintrin_init_0): Remove duplicate
        check for `!'.

Sun Dec 14 02:49:58 1997  Craig Burley  <burley@gnu.org>

        * intrin.c (ffeintrin_init_0): Fix up indentation a bit.
        Fix bug that prevented checking of arguments other
        than the first.

        * intdoc.c: Fix up indentation a bit.

Tue Dec  9 16:20:57 1997  Richard Henderson  <rth@cygnus.com>

        * com.c (ffecom_type_vardesc_): Vardesc.dims is a `ftnlen*'.

Mon Dec  1 19:12:36 1997  Craig Burley  <burley@gnu.org>

        * intrin.c (ffeintrin_check_): Fix up indentation a bit more.

Mon Dec  1 16:21:08 1997  Craig Burley  <burley@gnu.org>

        * com.c (ffecom_arglist_expr_): Crash if non-supplied
        optional arg isn't passed as an address.
        Pass null pointer explicitly, instead of via ffecom routine.
        If incoming argstring is NULL, substitute pointer to "0".
        Recognize '0' as ending the usual arg stuff, just like '\0'.

Sun Nov 30 22:22:22 1997  Craig Burley  <burley@gnu.org>

        * intdoc.c: Minor fix-ups.

        * intrin.c (ffeintrin_check_): Fix up indentation a bit.

        * intrin.def: Fix up spacing a bit.

1997-11-17  Dave Love  <d.love@dl.ac.uk>

        * com.c (ffecom_arglist_expr_): Pass null pointers for optional
        args which aren't supplied.

Sun Nov 16 21:45:43 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)

        * Make-lang.in (f77.install-info): Depend on f77.info.

1997-11-06  Dave Love  <d.love@dl.ac.uk>

        * intrin.def: Allow non-integer args for INT2 and INT8 (per
        documentation).

Tue Oct 28 02:21:25 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * lang-options.h: Add -fgnu-intrinsics-* and
        -fbadu77-intrinsics-* options.

Sun Oct 26 02:36:21 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (lang_print_error_function): Fix to more
        reliably notice when the diagnosed region changes.

Sat Oct 25 23:43:36 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix 950327-0.f:
        * sta.c, sta.h (ffesta_outpooldisp): New function.
        * std.c (ffestd_stmt_pass_): Don't kill NULL pool.
        (ffestd_R842): If pool already preserved, save NULL
        for pool, because it should be killed only once.

        * malloc.c [MALLOC_DEBUG]: Put initializer for `name'
        component in braces, to avoid compiler warning.

Fri Oct 10 13:00:48 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * ste.c (ffeste_begin_iterdo_): Fix loop setup so iteration
        variable is modified only after the #iterations is calculated;
        otherwise if the iteration variable is aliased to any of the
        operands in the start, end, or increment expressions, the
        wrong #iterations might be calculated.

        * com.c (ffecom_save_tree): Fix indentation.

1997-10-05  Dave Love  <d.love@dl.ac.uk>

        * intrin.def: Make SECOND_subr's arg generic real for people
        porting from Cray and making everything double precision.

Mon Sep 29 16:18:21 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * stu.c (ffestu_list_exec_transition_,
        ffestu_dummies_transition_): Specify `bool' type for
        `in_progress' variables.

        * com.h (assemble_string): Declare this routine (instead
        of #include'ing "output.h" from gcc) to eliminate warnings
        from lex.c.

Fri Sep 19 01:12:27 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * expr.c (ffeexpr_reduced_eqop2_): 
        (ffeexpr_reduced_relop2_): Minor fixes to diagnostic code.

        * fini.c (main): Change return type to `int'.

Wed Sep 17 10:47:08 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com-rt.def (FFECOM_gfrtDSIGN, FFECOM_gfrtISIGN,
        FFECOM_gfrtSIGN): Add second argument.

        * expr.c (ffeexpr_cb_comma_c_): Trivial fixes.

Tue Sep  9 01:59:35 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * Version 0.5.21 released.

Tue Sep  9 00:31:01 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * intdoc.c (dumpem): Put appropriate commentary in
        output file, so readers know it isn't source.

Wed Aug 27 08:08:25 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * proj.h: Always #include "config.j" first, to pick up
        gcc's configuration.
        * com.c: Change bcopy() and bzero() calls to memcpy()
        and memset() calls, to make more of g77 ANSI C.

1997-08-26  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in ($(srcdir)/f/runtime/configure,
        $(srcdir)/f/runtime/libU77/configure): Fix for when srcdir isn't
        relative.

Tue Aug 26 05:59:21 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * ansify.c (main): Make sure readers of stdout know
        it's derived from stdin; omit comment text; get source
        line numbers in future stderr output to be correct.

Tue Aug 26 01:36:01 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix 970825-0.f:
        * stb.c (ffestb_R5284_): Allow OPEN_PAREN after closing
        SLASH as well as NAME.

Mon Aug 25 23:48:17 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Changes to allow g77 docs to be built entirely from scratch
        using any ANSI C compiler, not requiring GNU C:
        * Make-lang.in ($(srcdir)/f/intdoc.texi): "Pipe" new
        location of intrinsic documentation data base, f/intdoc.in,
        through new `ansify' program to append `\n\' to quoted
        newlines, into f/intdoc.h0.  Do appropriate cleanups.  Explain.
        (f77.mostlyclean): Add f/ansify and f/intdoc.h0 to cleanups.
        * f/ansify.c: New program.
        * f/intdoc.c: Fix so it conforms to ANSI C.
        #include f/intdoc.h0 instead of f/intdoc.h.
        Avoid some warnings.
        * f/intdoc.h, f/intdoc.in: Rename the former to the latter; no
        changes made to the content in this patch!
        * f/intrin.h (ffeintrinFamily): Fix to conform to ANSI C.

Sun Aug 24 06:52:48 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix up g77 compiler data base for libf2c routines:
        * com-rt.def (FFECOM_gfrtSIGNAL): Change return type to
        FTNINT to match actual code.

        * com.c (ffecomRttype_): Replace FFECOM_rttypeINT_ with
        FFECOM_rttypeFTNINT_.
        Add and fix up comments.
        (ffecom_make_gfrt_, ffecom_gfrt_basictype,
        ffecom_gfrt_kindtype): Replace FFECOM_rttypeINT_ with
        FFECOM_rttypeFTNINT_; add FFECOM_rttypeDOUBLEREAL_.

Wed Aug 20 17:18:40 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * global.c (ffeglobal_ref_progunit_): It's okay to have
        a different CHARACTER*n length for a reference if the
        existing length is for another reference, not a definition.

Mon Aug 18 14:27:18 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix 970814-0.f:
        * global.c (ffeglobal_new_progunit_): Distinguish
        between previously defined, versus inferred, filewide
        when it comes to diagnostics.

        Fix 970816-1.f:
        * global.c (ffeglobal_ref_progunit_): Change BDATA into EXT
        right at the beginning, so EXTERNAL FOO followed later
        by SUBROUTINE FOO is not diagnosed.

        Fix 970813-0.f:
        * com-rt.def (FFECOM_gfrtALARM): Returns `integer', not
        `void'.

Sun Aug 17 03:32:44 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix up problems when virtual memory exhausted:
        * malloc.c (malloc_new_): Use gcc's xmalloc(), so we
        print a nicer message when malloc returns no memory.
        (malloc_resize_): Ditto for xrealloc().

        * Make-lang.in, Makefile.in: Comment out lines containing
        just formfeeds.

Sat Aug 16 19:41:33 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_make_gfrt_): For rttypeREAL_F2C_, return
        double_type_node; for rttypeREAL_GNU_, return
        _real_type_node.

1997-08-13  Dave Love  <d.love@dl.ac.uk>

        * config-lang.in (diff_excludes): Add some hints about known
        problematic platforms.

1997-08-13  Dave Love  <d.love@dl.ac.uk>

        * intdoc.h: Document `alarm'.

Mon Aug 11 21:19:22 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in ($(RUNTIMESTAGESTUFF)): Add
        f/runtime/stamp-lib.

Mon Aug 11 01:52:03 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_build_complex_constant_): Go with the
        new build_complex() approach used in gcc-2.8.

        * com.c (ffecom_sym_transform_): Don't set
        DECL_IN_SYSTEM_HEADER for a tree node that isn't
        a VAR_DECL, which happens when var is in common!

        * com.c (ffecom_expr_intrinsic_) (case FFEINTRIN_impALARM):
        No need to test codegen_imp -- there's only one valid here.

        * intrin.def (FFEINTRIN_impALARM): Specify `Status' argument
        as write-only.

Fri Aug  8 05:40:23 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Substantial changes to accommodate distinctions among
        run-time routines that support intrinsics, and between
        routines that compute and return the same type vs. those
        that compute one type and return another (or `void'):
        * com-rt.def: Specify new return type REAL_F2C_ instead
        of many DOUBLE_, COMPLEX_F2C_ instead of COMPLEX_, and
        so on.
        Clear up the *BES* routines "once and for all".
        * com.c: New return types.
        (ffecom_convert_narrow_, ffecom_convert_widen_):
        New functions that are "safe" variants of convert(),
        to catch errors that ffecom_expr_intrinsic_() now
        no longer catches.
        (ffecom_arglist_expr_): Ensure arguments are not
        converted to narrower types.
        (ffecom_call_): Ensure return value is not converted
        to a wider type.
        (ffecom_char_args_): Use new ffeintrin_gfrt_direct()
        routine.
        (ffecom_expr_intrinsic_): Simplify how run-time
        routine is selected (via `gfrt' only now; lose the
        redundant `ix' variable).
        Eliminate the `library' label; any code that doesn't
        return directly just `break's out now with `gfrt'
        set appropriately.
        Set `gfrt' to default choice initially, either a
        fast direct form or, if not available, a slower
        indirect-callable form.
        (ffecom_make_gfrt_): No longer need to do special
        check for complex; it's built into the new return-type
        regime.
        (ffecom_ptr_to_expr): Use new ffeintrin_gfrt_indirect()
        routine.
        * intrin.c, intrin.h: `gfrt' field replaced with three fields,
        so it is easier to provide faster direct-callable and
        GNU-convention indirect-callable routines in the future.
        DEFIMP macro adjusted accordingly, along with all its uses.
        (ffeintrin_gfrt_direct): New function.
        (ffeintrin_gfrt_indirect): Ditto.
        (ffeintrin_is_actualarg): If `-fno-f2c' is in effect,
        require a GNU-callable version of intrinsic instead of
        an f2c-callable version, so indirect calling is still checked.
        * intrin.def: Replace one GFRT field with the three new fields,
        as appropriate for each DEFIMP intrinsic.

        * com.c (ffecom_stabilize_aggregate_,
        ffecom_convert_to_complex_): Make these `static'.

Thu Aug  7 11:24:34 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Provide means for front end to determine actual
        "standard" return type for an intrinsic if it is
        passed as an actual argument:
        * com.h, com.c (ffecom_gfrt_basictype,
        ffecom_gfrt_kindtype): New functions.
        (ffecom_gfrt_kind_type_): Replaced with new function.
        All callers updated.
        (ffecom_make_gfrt_): No longer need do anything
        with kind type.

        * intrin.c (ffeintrin_basictype, ffeintrin_kindtype):
        Now returns correct type info for specific intrinsic
        (based on type of run-time-library implementation).

Wed Aug  6 23:08:46 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * global.c (ffeglobal_ref_progunit_): Don't reset
        number of arguments just due to new type info,
        so useful warnings can be issued.

1997-08-06  Dave Love  <d.love@dl.ac.uk>

        * intrin.def: Fix IDATE_vxt argument order.
        * intdoc.h: Likewise.

Thu Jul 31 22:22:03 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * global.c (ffeglobal_proc_ref_arg): If REF/DESCR
        disagreement, DESCR is CHARACTER, and types disagree,
        pretend the argsummary agrees so the message ends up
        being about type disagreement.
        (ffeglobal_proc_def_arg): Ditto.

        * expr.c (ffeexpr_token_first_rhs_3_): Set info for LABTOK
        to NONE of everything, to avoid misdiagnosing filewide
        usage of alternate returns.

Sun Jul 20 23:07:47 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_sym_transform_): If type gets set
        to error_mark_node, just return that for transformed symbol.
        (ffecom_member_phase2_): If type gets set to error_mark_node,
        just return.
        (ffecom_check_size_overflow_): Add `dummy' argument to
        flag that type is for a dummy, update all callers.

Sun Jul 13 17:40:53 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix 970712-1.f:
        * where.c (ffewhere_set_from_track): If start point
        is too large, just use initial start point.  0.6 should
        fix all this properly.

        Fix 970712-2.f:
        * com.c (ffecom_sym_transform_): Preserve error_mark_node for type.
        (ffecom_type_localvar_): Ditto.
        (ffecom_sym_transform_): If type is error_mark_node,
        don't error-check decl size, because back end responds by
        setting that to an integer 0 instead of error_mark_node.
        (ffecom_transform_common_): Same as earlier fix to _transform_
        in that size is checked by dividing BITS_PER_UNIT instead of
        multiplying.
        (ffecom_transform_equiv_): Ditto.

        Fix 970712-3.f:
        * stb.c (ffestb_R10014_): Fix flaky fall-through in error
        test for FFELEX_typeCONCAT by just replicating the code,
        and do FFELEX_typeCOLONCOLON while at it.

1997-07-07  Dave Love  <d.love@dl.ac.uk>

        * intdoc.h: Add various missing pieces; correct GMTIME, LTIME
        result ordering.

        * intrin.def, com-rt.def: Add alarm.

        * com.c (ffecom_expr_intrinsic_): Add case for alarm.

Thu Jun 26 04:19:40 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix 970302-3.f:
        * com.c (ffecom_sym_transform_): For sanity-check compare
        of gbe size of local variable to g77 expectation,
        use varasm.c/assemble_variable technique of dividing
        BITS_PER_UNIT out of gbe info instead of multiplying
        g77 info up, to avoid crash when size in bytes is very
        large, and overflows an `int' or similar when multiplied.

        Fix 970626-2.f:
        * com.c (ffecom_finish_symbol_transform_): Don't bother
        transforming a dummy argument, to avoid a crash.
        * ste.c (ffeste_R1227): Don't return a value if the
        result decl, or its type, is error_mark_node.

        Fix 970626-4.f:
        * lex.c (ffelex_splice_tokens): `-fdollar-ok' is
        irrelevant to whether a DOLLAR token should be made
        from an initial character of `$'.

        Fix 970626-6.f:
        * stb.c (ffestb_do3_): DO iteration variable is an
        lhs, not rhs, expression.

        Fix 970626-7.f and 970626-8.f:
        * expr.c (ffeexpr_cb_comma_i_1_): Set IMPDO expression
        to have clean info, because undefined rank, for example,
        caused crash on mangled source on UltraSPARC but not
        on Alpha for a series of weird reasons.
        (ffeexpr_cb_close_paren_): If not CLOSE_PAREN, push
        opANY expression onto stack instead of attempting
        to mimic what program might have wanted.
        (ffeexpr_cb_close_paren_): Don't wrap opPAREN around
        opIMPDO, just warn that it's gratuitous.
        * bad.def (FFEBAD_IMPDO_PAREN): New warning.

        Fix 970626-9.f:
        * expr.c (ffeexpr_declare_parenthesized_): Must shut down
        parsing in kindANY case, otherwise the parsing engine might
        decide there's an ambiguity.
        (ffeexpr_token_name_rhs_): Eliminate parentypeSUBROUTINE_
        case, so we crash right away if it comes through.
        * st.c, st.h, sta.c, sta.h (ffest_shutdown, ffesta_shutdown):
        New functions.

Tue Jun 24 19:47:29 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_check_size_overflow_): New function
        catches some cases of the size of a type getting
        too large.  varasm.c must catch the rest.
        (ffecom_sym_transform_): Use new function.
        (ffecom_type_localvar_): Ditto.

Mon Jun 23 01:09:28 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * global.c (ffeglobal_proc_def_arg): Fix comparison
        of argno to #args.
        (ffeglobal_proc_ref_arg): Ditto.

        * lang-options.h, top.c: Rename `-fdebug' to `-fxyzzy',
        since it's an unsupported internals option and some
        poor user might guess that it does something.

        * bad.def: Make a warning for each filewide diagnostic.
        Put all filewides together.
        * com.c (ffecom_sym_transform_): Don't substitute
        known global tree for global entities when `-fno-globals'.
        * global.c (ffeglobal_new_progunit_): Don't produce
        fatal diagnostics about globals when `-fno-globals'.
        Instead, produce equivalent warning when `-Wglobals'.
        (ffeglobal_proc_ref_arg): Ditto.
        (ffeglobal_proc_ref_nargs): Ditto.
        (ffeglobal_ref_progunit_): Ditto.
        * lang-options.h, top.c, top.h: New `-fno-globals' option.

Sat Jun 21 12:32:54 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * expr.c (ffeexpr_fulfill_call_): Set array variable
        to avoid warning about uninitialized variable.

        * Make-lang.in: Get rid of any setting of HOST_* macros,
        since these will break gcc's build!
        * makefile: New file to make building derived files
        easier.

Thu Jun 19 18:19:28 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * g77.c (main): Install Emilio Lopes' patch to support
        Ratfor, and to fix the printing of the version string
        to go to stderr, not stdout.
        * lang-specs.h: Install Emilio Lopes' patch to support
        Ratfor, and patch the result to support picking up
        `*f771' from the `specs' file.

Thu Jun 12 14:36:25 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * storag.c (ffestorag_update_init, ffestorag_update_save):
        Also update parent, in case equivalence processing
        has already eliminated pointers to it via the
        local equivalence info.

Tue Jun 10 14:08:26 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * intdoc.c: Add cross-reference to end of description
        of any generic intrinsic pointing to other intrinsics
        with the same name.

        Warn about explicit type declaration for intrinsic
        that disagrees with invocation:
        * expr.c (ffeexpr_paren_rhs_let_): Preserve type info
        for intrinsic functions.
        (ffeexpr_token_funsubstr_): Ditto.
        * intrin.c (ffeintrin_fulfill_generic): Warn if type
        info of fulfilled intrinsic invocation disagrees with
        explicit type info given symbol.
        (ffeintrin_fulfill_specific): Ditto.
        * stc.c (ffestc_R1208_item): Preserve type info
        for intrinsics.
        (ffestc_R501_item): Ditto.

Mon Jun  9 17:45:44 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_expr_intrinsic_): Fix several of the
        libU77/libF77-unix handlers to properly convert their
        arguments.

        * com-rt.def (FFECOM_gfrtFSTAT): Append missing "i" to
        arg string.

Fri Jun  6 14:37:30 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_expr_intrinsic_): Have a case statement
        for every intrinsic implementation, so missing ones
        are caught via gcc warnings.
        Don't call ffeintrin_codegen_imp anymore.
        * intrin.c (ffeintrin_fulfill_generic): Remove cg_imp
        stuff from here.
        (ffeintrin_codegen_imp): Delete this function.
        * intrin.def, intrin.h: Remove DEFIMQ stuff from here
        as well.

Thu Jun  5 13:03:07 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * top.c (ffe_decode_option): New -fbadu77-intrinsics-*
        options.
        * top.h: Ditto.
        * intrin.h: New BADU77 family.
        * intrin.c (ffeintrin_state_family): Ditto.

        Implement new scheme to track intrinsic names vs. forms:
        * intrin.c (ffeintrin_fulfill_generic),
        (ffeintrin_fulfill_specific), (ffeintrin_is_intrinsic),
        intrin.def: The documented name is now either in the
        generic info or, if no generic, in the specific info.
        For a generic, the specific info contains merely the
        distinguishing form (usually "function" or "subroutine"),
        used for diagnostics about ambiguous references and
        in the documentation.

        * intrin.def: Clean up formatting of DEFNAME block.
        Convert many libU77 intrinsics into generics that
        support both subroutine and function forms.
        Put the function forms of side-effect routines into
        the new BADU77 family.
        Make MCLOCK and TIME return INTEGER*4 again, and add
        INTEGER*8 equivalents called MCLOCK8 and TIME8.
        Fix up more status return values to be written and
        insist on them being I1 as well.
        * com.c (ffecom_expr_intrinsic_): Lots of changes to
        support new libU77 intrinsic interfaces.

Mon Jun  2 00:37:53 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_init_0): Pointer type is now INTEGER(KIND=7),
        not INTEGER(KIND=0), since we want to reserve KIND=0 for
        future use.

Thu May 29 14:30:33 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix bugs preventing CTIME(I*4) from working correctly:
        * com.c (ffecom_char_args_): For FUNCREF case, process
        args to intrinsic just as they would be in
        ffecom_expr_intrinsic_.
        * com-rt.def (FFECOM_gfrtCTIME, FFECOM_gfrtTTYNAM): Fix
        argument decls to specify `&'.

Wed May 28 22:19:49 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix gratuitous warnings exposed by dophot aka 970528-1:
        * global.c (ffeglobal_proc_def_arg, ffeglobal_proc_ref_arg):
        Support distinct function/subroutine arguments instead of
        just procedures.
        * global.h: Ditto.
        * expr.c (ffeexpr_fulfill_call_): A SYMTER with kindNONE
        also is a procedure (either function or subroutine).

Mon May 26 20:25:31 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * bad.def: Have several lexer diagnostics refer to
        documentation for people who need more info on what Fortran
        source code is supposed to look like.

        * expr.c (ffeexpr_reduced_bool1_), bad.def: New diagnostics
        specific to .NOT. now mention only one operand instead
        of two.

        * g77.c: Recognize -fsyntax-only, similar to -c etc.
        (lookup_option): Fix bug that prevented non-`--' options
        from being recognized.

Sun May 25 04:29:04 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * intrin.def (FFEINTRIN_impCTIME): Accept `I*' expression
        for STime instead of requiring `I2'.

Tue May 20 16:14:40 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * symbol.c (ffesymbol_reference): All references to
        standard intrinsics are considered explicit, so as
        to avoid generating basically useless warnings.
        * intrin.c, intrin.h (ffeintrin_is_standard): Returns TRUE
        if intrinsic is standard.

Sun May 18 21:14:59 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com-rt.def: Changed all external names of the
        form `"\([a-z0-9]*\)_' to `"G77_\1_0"' so as to
        allow any name valid as an intrinsic to be used
        as such and as a user-defined external procedure
        name or common block as well.

Thu May  8 13:07:10 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * expr.c (ffeexpr_cb_end_notloc_): For %VAL, %REF, and
        %DESCR, copy arg info into new node.

Mon May  5 14:42:17 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        From Uwe F. Mayer <mayer@math.Vanderbilt.Edu>:
        * Make-lang.in (g77-cross): Fix typo in g77.c path.

        From Brian McIlwrath <bkm@star.rl.ac.uk>:
        * lang-specs.h: Have g77 pick up options from a section
        labeled `*f771' of the `specs' file.

Sat May  3 02:46:08 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * intrin.def (FFEINTRIN_defSIGNAL): Add optional `Status'
        argument that com.c already expects (per Dave Love).

        More changes to support better tracking of (filewide)
        globals, in particular, the arguments to procedures:
        * bad.def (FFEBAD_FILEWIDE_NARGS, FFEBAD_FILEWIDE_NARGS_W,
        FFEBAD_FILEWIDE_ARG, FFEBAD_FILEWIDE_ARG_W): New diagnostics.
        * expr.c (ffebad_fulfill_call_): Provide info on each
        argument to ffeglobal.
        * global.c, global.h (ffeglobal_proc_def_arg,
        ffeglobal_proc_def_nargs, ffeglobal_proc_ref_arg,
        ffeglobal_proc_ref_args): New functions.
        (ffeglobalArgSummary, ffeglobalArgInfo_): New types.

Tue Apr 29 18:35:41 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        More changes to support better tracking of (filewide)
        globals:
        * expr.c (ffeexpr_fulfill_call_): New function.
        (ffeexpr_token_name_lhs_): Call after building procedure
        reference expression.  Also leave info field for ANY-ized
        expression alone.
        (ffeexpr_token_arguments_): Ditto.

Mon Apr 28 20:04:18 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Changes to support better tracking of (filewide)
        globals, mainly to avoid crashes due to inlining:
        * bad.def: Go back to quoting intrinsic names,
        (FFEBAD_FILEWIDE_DISAGREEMENT, FFEBAD_FILEWIDE_TIFF,
        FFEBAD_FILEWIDE_TYPE_MISMATCH): New diagnostics.
        (FFEBAD_INTRINSIC_EXPIMP, FFEBAD_INTRINSIC_GLOBAL): Reword
        for clarity.
        * com.c (ffecom_do_entry_, ffecom_start_progunit_,
        ffecom_sym_transform_): Accommodate new FFEGLOBAL_typeEXT
        possibility.
        * expr.c (ffeexpr_sym_lhs_call_, ffeexpr_sym_lhs_extfunc_,
        ffeexpr_sym_rhs_actualarg_, ffeexpr_declare_parenthesized_,
        ffeexpr_paren_rhs_let_, ffeexpr_token_funsubstr_):
        Fill in real kind info instead of leaving NONE where
        appropriate.
        Register references to intrinsics and globals with ffesymbol
        using new ffesymbol_reference function instead of
        ffesymbol_globalize.
        * global.c (ffeglobal_type_string_): New array for
        new diagnostics.
        * global.h, global.c:
        Replace ->init mechanism with ->tick mechanism.
        Move other common-related members into a substructure of
        a union, so the proc substructure can be introduced
        to include members related to externals other than commons.
        Don't complain about ANY-ized globals; ANY-ize globals
        once they're complained about, in any case where code
        generation could become a problem.
        Handle global entries that have NONE type (seen as
        intrinsics), EXT type (seen as EXTERNAL), and so on.
        Keep track of kind and type of externals, both via
        definition and via reference.
        Diagnose disagreements about kind or type of externals
        (such as functions).
        (ffeglobal_ref_intrinsic, ffeglobal_ref_progunit_): New
        functions.
        * stc.c (ffestc_R1207_item, ffestc_R1208_item,
        ffestc_R1219, ffestc_R1226):
        Call ffesymbol_reference, not ffesymbol_globalize.
        * stu.c (ffestu_sym_end_transition,
        ffestu_sym_exec_transition):
        Call ffesymbol_reference, not ffesymbol_globalize.
        * symbol.c (ffesymbol_globalize): Removed...
        (ffesymbol_reference): ...to this new function,
        which more generally registers references to symbols,
        globalizes globals, and calls on the ffeglobal module
        to check globals filewide.

        * global.h, global.c: Rename some macros and functions
        to more clearly distinguish common from other globals.
        All callers changed.

        * com.c (ffecom_sym_transform_): Trees describing
        filewide globals must be allocated on permanent obstack.

        * expr.c (ffeexpr_token_name_lhs_): Don't generate
        gratuitous diagnostics for FFEINFO_whereANY case.

Thu Apr 17 03:27:18 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * global.c: Add support for flagging intrinsic/global
        confusion via warnings.
        * bad.def (FFEBAD_INTRINSIC_EXPIMP,
        FFEBAD_INTRINSIC_GLOBAL): New diagnostics.
        * expr.c (ffeexpr_token_funsubstr_): Ditto.
        (ffeexpr_sym_lhs_call_): Ditto.
        (ffeexpr_paren_rhs_let_): Ditto.
        * stc.c (ffestc_R1208_item): Ditto.

Wed Apr 16 22:40:56 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * expr.c (ffeexpr_declare_parenthesized_): INCLUDE
        context can't be an intrinsic invocation either.

Fri Mar 28 10:43:28 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * expr.c (ffeexpr_token_arguments_): Make sure top of
        exprstack is operand before dereferencing operand field.

        * lex.c (ffelex_prepare_eos_): Fill up truncated
        hollerith token, so crash on null ->text field doesn't
        happen later.

        * stb.c (ffestb_R10014_): If NAMES isn't recognized (or
        the recognized part is followed in the token by a
        non-digit), don't try and collect digits, as there
        might be more than FFEWHERE_indexMAX letters to skip
        past to do so -- and the code is diagnosed anyway.

Thu Mar 27 00:02:48 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_sym_transform_): Force local
        adjustable array onto stack.

        * stc.c (ffestc_R547_item_object): Don't actually put
        the symbol in COMMON if the symbol has already been
        EQUIVALENCE'd to a different COMMON area.

        * equiv.c (ffeequiv_add): Don't actually do anything
        if there's a disagreement over which COMMON area is
        involved.

Tue Mar 25 03:35:19 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_transform_common_): If no explicit init
        of COMMON area, don't actually init it even though
        storage area suggests it.

Mon Mar 24 12:10:08 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * lex.c (ffelex_image_char_): Avoid overflowing the
        column counter itself, as well as the card image.

        * where.c (ffewhere_line_new): Cast ffelex_line_length()
        to (size_t) so 255 doesn't overflow to 0!

        * stc.c (ffestc_labeldef_notloop_begin_): Don't gratuitously
        terminate loop before processing statement, so block
        doesn't disappear out from under EXIT/CYCLE processing.
        (ffestc_labeldef_notloop_): Has old code from above
        function, instead of just calling it.

        * expr.c (ffeexpr_cb_comma_i_4_): Don't skip over
        arbitrary token (such as EOS).

        * com.c (ffecom_init_zero_): Handle RECORD_TYPE and
        UNION_TYPE so -fno-zeros works with -femulated-complex.

1997-03-12  Dave Love  <d.love@dl.ac.uk>

        * intrin.def: New intrinsics INT2, INT8, CPU_TIME.  Fix AND, OR,
        XOR.  [Integrated by burley, AND/OR/XOR already fixed, INT8
        implementation changed/fixed.]

Wed Mar 12 10:40:08 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in ($(srcdir)/f/intdoc.texi): Simplify rules
        so building f/intdoc is not always necessary; remove
        f/intdoc after running it if it is built.

Tue Mar 11 23:42:00 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * intrin.def (FFEINTRIN_impAND, FFEINTRIN_impOR,
        FFEINTRIN_impXOR): Use the IAND, IOR, and IEOR implementations
        of these, instead of crashing in ffecom_expr_intrinsic_
        or adding case labels there.

Mon Mar 10 22:51:23 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * intdoc.c: Fix so any C compiler can compile this.

Fri Feb 28 13:16:50 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * Version 0.5.20 released.

Fri Feb 28 01:45:25 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in (RUNTIMESTAGESTUFF, LIBU77STAGESTUFF):
        Move some files incorrectly in the former to the latter,
        and add another file or two to the latter.

        New meanings for (KIND=n), and new denotations in the
        little language describing intrinsics:
        * com.c (ffecom_init_0): Assign new meanings.
        * intdoc.c: Document new meanings.
        Support the new denotations.
        * intrin.c: Employ new meanings, mapping them to internal
        values (which are the same as they ever were for now).
        Support the new denotations.
        * intrin.def: Switch DEFIMP table to the new denotations.

        * intrin.c (ffeintrin_check_): Fix bug that was leaving
        LOC() and %LOC() returning INTEGER*4 on systems where
        it should return INTEGER*8.

        * type.c: Canonicalize function definitions, for etags
        and such.

Wed Feb 26 20:43:03 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_init_0): Choose INTEGER(KIND=n) types,
        where n is 2, 3, and 4, according to the new docs
        instead of according to the old C correspondences
        (which seem less useful at this point).

        * equiv.c (ffeequiv_destroy_): New function.
        (ffeequiv_layout_local_): Use this new function
        whenever the laying out of a local equivalence chain
        is aborted for any reason.
        Otherwise ensure that symbols no longer reference
        the stale ffeequiv entries that result when they
        are killed off in this procedure.
        Also, the rooted symbol is one that has storage,
        it really is irrelevant whether it has an equiv entry
        at this point (though the code to remove the equiv
        entry was put in at the end, just in case).
        (ffeequiv_kill): When doing internal checks, make
        sure the victim isn't named by any symbols it points
        to.  Not as complete a check as looking through the
        entire symbol table (which does matter, since some
        code in equiv.c used to remove symbols from the lists
        for an ffeequiv victim but not remove that victim as the
        symbol's equiv info), but this check did find some
        real bugs in the code (that were fixed).

Mon Feb 24 16:42:13 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_expr_intrinsic_): Fix a couple of
        warnings about uninitialized variables.
        * intrin.c (ffeintrin_check_): Ditto, but there were
        a couple of _real_ uninitialized-variable _bugs_ here!
        (ffeintrin_fulfill_specific): Ditto, no real bug here.

Sun Feb 23 15:01:20 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Clean up diagnostics (especially about intrinsics):
        * bad.def (FFEBAD_UNIMPL_STMT): Remove.
        (FFEBAD_INTRINSIC_*, FFEBAD_NEED_INTRINSIC): Clean these
        up so they're friendlier.
        (FFEBAD_INTRINSIC_CMPAMBIG): New.
        * intrin.c (ffeintrin_fulfill_generic,
        ffeintrin_fulfill_specific, ffeintrin_is_intrinsic):
        Always choose
        generic or specific name text (which is for doc purposes
        anyway) over implementation name text (which is for
        internal use).
        * intrin.def: Use more descriptive name texts for generics
        and specifics in cases where the names themselves are not
        enough (e.g. IDATE, which has two forms).

        Fix some intrinsic mappings:
        * intrin.def (FFEINTRIN_specIDINT, FFEINTRIN_specAND,
        FFEINTRIN_specDFLOAT, FFEINTRIN_specDREAL, FFEINTRIN_specOR,
        FFEINTRIN_specXOR): Now have their own implementations,
        instead of borrowing from others.
        (FFEINTRIN_specAJMAX0, FFEINTRIN_specAJMIN0, FFEINTRIN_specBJTEST,
        FFEINTRIN_specDFLOTJ, FFEINTRIN_specFLOATJ, FFEINTRIN_specJIABS,
        FFEINTRIN_specJIAND, FFEINTRIN_specJIBCLR, FFEINTRIN_specJIBITS,
        FFEINTRIN_specJIBSET, FFEINTRIN_specJIDIM, FFEINTRIN_specJIDINT,
        FFEINTRIN_specJIDNNT, FFEINTRIN_specJIEOR, FFEINTRIN_specJIFIX,
        FFEINTRIN_specJINT, FFEINTRIN_specJIOR, FFEINTRIN_specJISHFT,
        FFEINTRIN_specJISHFTC, FFEINTRIN_specJISIN, FFEINTRIN_specJMAX0,
        FFEINTRIN_specJMAX1, FFEINTRIN_specJMIN0, FFEINTRIN_specJMIN1,
        FFEINTRIN_specJMOD, FFEINTRIN_specJNINT, FFEINTRIN_specJNOT,):
        Turn these implementations off, since it's not clear
        just what types they expect in the context of portable Fortran.
        (DFLOAT): Now in FVZ family, since f2c supports them

        Support intrinsic inquiry functions (BIT_SIZE, LEN):
        * intrin.c: Allow `i' in <arg_extra>.
        * intrin.def (FFEINTRIN_impBIT_SIZE, FFEINTRIN_impLEN):
        Mark args with `i'.

Sat Feb 22 13:34:09 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Only warn, don't error, for reference to unimplemented
        intrinsic:
        * bad.def (FFEBAD_INTRINSIC_UNIMPLW): Warning version
        of _UNIMPL.
        * intrin.c (ffeintrin_is_intrinsic): Use new warning
        version of _UNIMPL (FFEBAD_INTRINSIC_UNIMPLW).

        Complain about REAL(Z) and AIMAG(Z) (Z is DOUBLE COMPLEX):
        * bad.def (FFEBAD_INTRINSIC_CMPAMBIG): New diagnostic.
        * expr.c: Needed #include "intrin.h" anyway.
        (ffeexpr_token_intrincheck_): New function handles delayed
        diagnostic for "REAL(REAL(expr)" if next token isn't ")".
        (ffeexpr_token_arguments_): Do most of the actual checking here.
        * intrin.h, intrin.c (ffeintrin_fulfill_specific): New
        argument, check_intrin, to tell caller that intrin is REAL(Z)
        or AIMAG(Z).  All callers updated, mostly to pass NULL in
        for this.
        (ffeintrin_check_): Also has new arg check_intrin for same
        purpose.  All callers updated the same way.
        * intrin.def (FFEINTRIN_impAIMAG): Change return type
        from "R0" to "RC", to accommodate f2c (and perhaps other
        non-F90 F77 compilers).
        * top.h, top.c: New option -fugly-complex.

        New GNU intrinsics REALPART, IMAGPART, and COMPLEX:
        * com.c (ffecom_expr_intrinsic_): Implement impCOMPLEX
        and impREALPART here.  (specIMAGPART => specAIMAG.)
        * intrin.def: Add the intrinsics here.

        Rename implementations of VXTIDATE and VXTTIME to IDATEVXT
        and TIMEVXT, so they sort more consistently:
        * com.c (ffecom_expr_intrinsic_):
        * intrin.def:

        Delete intrinsic group `dcp', add `gnu', etc.:
        * intrin.c (ffeintrin_state_family): FFEINTRIN_familyGNU
        replaces FFEINTRIN_familyDCP, and gets state from `gnu'
        group.
        Get rid of FFEINTRIN_familyF2Z, nobody needs it.
        Move FFEINTRIN_specDCMPLX from DCP family to FVZ family,
        as f2c has it.
        Move FFEINTRIN_specDFLOAT from F2C family to FVZ family.
        (FFEINTRIN_specZABS, FFEINTRIN_specZCOS, FFEINTRIN_specZEXP,
        FFEINTRIN_specZLOG, FFEINTRIN_specZSIN, FFEINTRIN_specZSQRT):
        Move these from F2Z family to F2C family.
        * intrin.h (FFEINTRIN_familyF2Z, FFEINTRIN_familyDCP): Remove.
        (FFEINTRIN_familyGNU): Add.
        * top.h, top.c: Replace `dcp' with `gnu'.

        * com.c (ffecom_expr_intrinsic_): Clean up by collecting
        simple conversions into one nice, conceptual place.
        Fix up some intrinsic subroutines (MVBITS, KILL, UMASK) to
        properly push and pop call temps, to avoid wasting temp
        registers.

        * g77.c (doit): Toon says variables should be defined
        before being referenced.  Spoilsport.

        * intrin.c (ffeintrin_check_): Now Dave's worried about
        warnings about uninitialized variables.  Okay, so for
        basic return values 'g' and 's', they _were_
        uninitialized -- is determinism really _that_ useful?

        * intrin.def (FFEINTRIN_impFGETC): Fix STATUS argument
        so that it is INTENT(OUT) instead of INTENT(IN).

1997-02-21  Dave Love  <d.love@dl.ac.uk>

        * intrin.def, com.c: Support Sun-type `short' and `long'
        intrinsics.  Perhaps should also do Microcruft-style `int2'.

Thu Feb 20 15:16:53 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_expr_intrinsic_): Clean up indentation.
        Support SECONDSUBR intrinsic implementation.
        Rename SECOND to SECONDFUNC for direct support via library.

        * g77.c: Fix to return proper status value to shell,
        by obtaining it from processes it spawns.

        * intdoc.c: Fix minor typo.

        * intrin.def: Turn SECOND into generic that maps into
        function and subroutine forms.

        * intrin.def: Make FLOAT and SNGL into specific intrinsics.

        * intrin.def, intrin.h: Change the way DEFGEN and DEFSPEC
        macros work, to save on verbage.

Mon Feb 17 02:08:04 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        New subsystem to automatically generate documentation
        on intrinsics:
        * Make-lang.in ($(srcdir)/f/g77.info,
        $(srcdir)/f/g77.dvi): Move g77 doc rules around.
        Add to g77 doc rules the new subsystem.
        (f77.mostlyclean, f77.maintainer-clean): Also clean up
        after new doc subsystem.
        * intdoc.c, intdoc.h: New doc subsystem code.
        * intrin.h [FFEINTRIN_DOC]: When 1, don't pull in
        stuff not needed by doc subsystem.

        Improve on intrinsics mechanism to both be more
        self-documenting and to catch more user errors:
        * intrin.c (ffeintrin_check_): Recognize new arg-len
        and arg-rank information, and check it.
        Move goto and signal indicators to the basic type.
        Permit reference to arbitrary argument number, not
        just first argument (for BESJN and BESYN).
        (ffeintrin_init_0): Check and accept new notations.
        * intrin.c, intrin.def: Value in COL now identifies
        arguments starting with number 0 being the first.

        Some minor intrinsics cleanups (resulting from doc work):
        * com.c (ffecom_expr_intrinsic_): Implement FLUSH
        directly once again, handle its optional argument,
        so it need not be a generic (awkward to handle in docs).
        * intrin.def (BESJ0, BESJ1, BESJN, BESY0, BESY1, BESYN,
        CHDIR, CHMOD, CTIME, DBESJ0, DBESJ1, DBESJN, DBESY0,
        DBESY1, DBESYN, DDIM, ETIME, FGETC, FNUM, FPUTC, FSTAT,
        GERROR, GETCWD, GETGID, GETLOG, GETPID, GETUID, GMTIME,
        HOSTNM, IDATE, IERRNO, IIDINT, IRAND, ISATTY, ITIME, JIDINT,
        LNBLNK, LSTAT, LTIME, MCLOCK, PERROR, SRAND, SYMLNK, TTYNAM,
        UMASK): Change capitalization of initcaps (official) name
        to be consistent with Burley's somewhat arbitrary rules.
        (BESJN, BESYN): These have return arguments of same type
        as their _second_ argument.
        (FLUSH): Now a specific, not generic, intrinsic, with one
        optional argument.
        (FLUSH1): Eliminated.
        Add arg-len and arg-rank info to several intrinsics.
        (ITIME): Change argument type from REAL to INTEGER.

Tue Feb 11 14:04:42 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in (f771): Invocation of Makefile now done
        with $(srcdir)=gcc to go along with $(VPATH)=gcc.
        ($(srcdir)/f/runtime/configure,
        $(srcdir)/f/runtime/libU77/configure): Break these out
        so spurious triggers of this rule don't happen (as when
        configure.in is more recent than libU77/configure).
        (f77.rebuilt): Distinguish source versus build files,
        so this target can be invoked from build directory and
        still work.
        * Makefile.in: This now expects $(srcdir) to be the gcc
        source directory, not gcc/f, to agree with $(VPATH).
        Accordingly, $(INCLUDES) has been fixed, various cruft
        removed, the removal of f771 has been fixed to remove
        the _real_ f771 (not the one in gcc's parent directory),
        and so on.

        * lex.c: Part of ffelex_finish_statement_() now done
        by new function ffelex_prepare_eos_(), so that, in one
        popular case, the EOS can be prepared while the pointer
        is at the end of the non-continued line instead of the
        end of the line that marks no continuation.  This improves
        the appearance of diagnostics substantially.

Mon Feb 10 12:44:06 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in: runtime Makefile's, and include/f2c.h,
        also depend on f/runtime/configure and f/runtime/libU77/configure.

        Fix various libU77 routines:
        * com-rt.def (FFECOM_gfrtCTIME, FFECOM_gfrtMCLOCK,
        FFECOM_gfrtTIME): These now use INTEGER*8 for time values,
        for compatibility with systems like Alpha.
        (FFECOM_gfrtSYSTEM_CLOCK, FFECOM_gfrtTTYNAM): Delete incorrect
        trailing underscore in routine names.
        * intrin.c, intrin.def: Support INTEGER*8 return values and
        arguments ('4').  Change FFEINTRIN_impCTIME, FFEINTRIN_impMCLOCK,
        and FFEINTRIN_impTIME accordingly.
        (ffeintrin_is_intrinsic): Don't give caller a clue about
        form of intrinsic -- shouldn't be needed at this point.

        Cope with generic intrinsics that are subroutines and functions:
        * com.c (ffecom_finish_symbol_transform_, ffecom_expr_transform_):
        Don't transform an intrinsic that is not known to be a subroutine
        or a function.  (Maybe someday have to avoid transforming
        any intrinsic with an undecided or unknown implementation.)
        * expr.c (ffeexpr_declare_unadorned_,
        ffeexpr_declare_parenthesized_): Ok to invoke generic
        intrinsic that has at least one subroutine form as a
        subroutine.
        Ok to pass intrinsic as actual arg if it has a known specific
        intrinsic form that is valid as actual arg.
        (ffeexpr_declare_parenthesized_): An unknown kind of
        intrinsic has a paren_type chosen based on context.
        (ffeexpr_token_arguments_): Build funcref/subrref based
        on context, not on kind of procedure being called.
        * intrin.h, intrin.c (ffeintrin_is_intrinsic): Undo changes of
        Tue Feb  4 23:12:04 1997 by me, change all callers to leave
        intrinsics as FFEINFO_kindNONE at this point.  (Some callers
        also had unused variables deleted as a result.)

        Enable all intrinsic groups (especially f90 and vxt):
        * target.h (FFETARGET_defaultSTATE_DCP, FFETARGET_defaultSTATE_F2C,
        FFETARGET_defaultSTATE_F90, FFETARGET_defaultSTATE_MIL,
        FFETARGET_defaultSTATE_UNIX, FFETARGET_defaultSTATE_VXT):
        Delete these macros, let top.c set them directly.
        * top.c (ffeintrinsic_state_dcp_, ffe_intrinsic_state_f2c_,
        ffe_intrinsic_state_f90_, ffe_intrinsic_state_mil_,
        ffe_intrinsic_state_unix_, ffe_intrinsic_state_vxt_):
        Enable all these directly.

Sat Feb  8 03:21:50 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * g77.c: Incorporate recent changes to ../gcc.c.
        For version magic (e.g. `g77 -v'), instead of compiling
        /dev/null, write, compile, run, and then delete a small
        program that prints the version numbers of the three
        components of libf2c (libF77, libI77, and libU77),
        so we get this info with bug reports.
        Also, this change reduces the chances of accidentally
        linking to an old (complex-alias-problem) libf2c.
        Fix `-L' so the argument is expected in `-Larg'.

        * com.h (FFECOM_f2cLONGINT): For INTEGER*8 support in f2c.h,
        dynamically determine proper type here, instead of
        assuming `long long int' is correct.

Tue Feb  4 23:12:04 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Add libU77 library from Dave Love <d.love@dl.ac.uk>:
        * Make-lang.in (f77-runtime): Depend on new Makefile.
        (f/runtime/libU77/Makefile): New rule.
        Also configure libU77.
        ($(srcdir)/f/runtime/configure: Use Makefile.in,
        so configuration doesn't have to have happened.
        (f77.mostlyclean, f77.clean, f77.distclean,
        f77.maintainer-clean): Some fixups here, but more work
        needed.
        (RUNTIMESTAGESTUFF): Add libU77's config.status.
        (LIBU77STAGESTUFF, f77.stage1, f77.stage2, f77.stage3,
        f77.stage4): New macro, appropriate uses added.
        * com-rt.def: Add libU77 procedures.
        * com.c (ffecom_f2c_ptr_to_integer_type_node,
        ffecom_f2c_ptr_to_real_type_node): New type nodes.
        (FFECOM_rttypeCHARACTER_): New type of run-time function.
        (ffecom_char_args_): Handle CHARACTER*n intrinsics
        where n != 1 here, instead of in ffecom_expr_intrinsic_.
        (ffecom_expr_intrinsic_): New code to handle new
        intrinsics.
        In particular, change how FFEINTRIN_impFLUSH is handled.
        (ffecom_make_gfrt_): Handle new type of run-time function.
        (ffecom_init_0): Initialize new type nodes.
        * config-lang.in: New libU77 directory.
        * intrin.h, intrin.c (ffeintrin_is_intrinsic): Handle
        potential generic for subroutine _and_ function
        specifics via two new arguments.  All callers changed.
        Properly ignore deleted/disabled intrinsics in resolving
        generics.
        (ffeintrin_check_, ffeintrin_init_0): Handle CHARACTER intrinsics of (*)
        length.
        * intrin.def: Permission granted by FSF to place this in
        public domain, which will allow it to serve as source
        for both g77 program and its documentation.
        Add libU77 intrinsics.
        (FLUSH): Now a generic, not specific, intrinsic.
        (DEFIMP): Now support return modifier for CHARACTER intrinsics.

        * com-rt.def (FFECOM_gfrtDIM, FFECOM_gfrtERF,
        FFECOM_gfrtERFC, FFECOM_gfrtEXP, FFECOM_gfrtSIGN,
        FFECOM_gfrtSIN, FFECOM_gfrtSINH, FFECOM_gfrtTAN,
        FFECOM_gfrtTANH, FFECOM_gfrtPOW_RI): Change "&r" to "&f".

Sat Feb  1 12:15:09 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * Version 0.5.19.1 released.

        * com.c (ffecom_expr_, ffecom_expr_intrinsic_,
        ffecom_tree_divide_): FFECOM_gfrtPOW_ZI,
        FFECOM_gfrtCONJG, FFECOM_gfrtDCONJG,
        FFECOM_gfrtCCOS, FFECOM_gfrtCDCOS,
        FFECOM_gfrtCLOG, FFECOM_gfrtCDLOG,
        FFECOM_gfrtCSIN, FFECOM_gfrtCDSIN,
        FFECOM_gfrtCSQRT, FFECOM_gfrtCDSQRT,
        FFECOM_gfrtDIV_CC, FFECOM_gfrtDIV_ZZ: These all require
        result to _not_ overlap one or more inputs.

Sat Feb  1 00:25:55 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_init_0): Do internal checks only if
        -fset-g77-defaults not specified.

        Fix %LOC(), LOC() to return sufficiently wide type:
        * com.h, com.c (ffecom_pointer_kind_, ffecom_label_kind_,
        ffecom_pointer_kind(), ffecom_label_kind()): New globals
        and accessor macros hold kind for integer pointers on target
        machine.
        (ffecom_init_0): Determine narrowest INTEGER type that
        can hold a pointer (usually INTEGER*4 or INTEGER*8),
        store it in ffecom_pointer_kind_, etc.
        * expr.c (ffeexpr_cb_end_loc_): Use right type for %LOC().
        * intrin.c (ffeintrin_check_, ffeintrin_init_0): Support
        new 'p' kind for type of intrinsic.
        * intrin.def (FFEINTRIN_impLOC): Returns "Ip" instead of "I1",
        so LOC() type is correct for target machine.

        Support -fugly-assign:
        * lang-options.h, top.h, top.c (ffe_decode_option):
        Accept -fugly-assign and -fno-ugly-assign.
        * com.c (ffecom_expr_): Handle -fugly-assign.
        * expr.c (ffeexpr_finished_): Check right type for ASSIGN
        contexts.

Fri Jan 31 14:30:00 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Remove last vestiges of -fvxt-not-f90:
        * stb.c (ffestb_R10012_, ffestb_R10014_, ffestb_V0201_):
        top.c, top.h:

Fri Jan 31 02:13:54 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * top.c (ffe_decode_option): Warn if -fugly is specified,
        it'll go away soon.

        * symbol.h: No need to #include "bad.h".

        Reorganize features from -fvxt-not-f90 to -fvxt:
        * lang-options.h, top.h, top.c:
        Accept -fvxt and -fno-vxt, but not -fvxt-not-f90 or -ff90-not-vxt.
        Warn if the latter two are used.
        * expr.c (ffeexpr_nil_rhs_): Double-quote means octal constant.
        (ffeexpr_token_rhs_): Double-quote means octal constant.
        * target.h (FFETARGET_defaultIS_VXT_NOT_90): Delete macro
        definition, no longer needed.

        Make some -ff90 features the default:
        * data.c (ffedata_value): DATA implies SAVE.
        * src.h (ffesrc_is_name_noninit): Underscores always okay.

        Fix up some more #error directives by quoting their text:
        * bld.c (ffebld_constant_is_zero):
        * target.h:

Sat Jan 18 18:22:09 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * g77.c (lookup_option, main): Recognize `-Xlinker',
        `-Wl,', `-l', `-L', `--library-directory', `-o',
        `--output'.
        (lookup_option): Don't depend on SWITCH_TAKES_ARG
        being correct, it might or might not have `-x' in
        it depending on host.
        Return NULL argument if it would be an empty string.
        (main): If no input files (by gcc.c's definition)
        but `-o' or `--output' specified, produce diagnostic
        to avoid overwriting output via gcc.
        Recognize C++ `+e' options.
        Treat -L as another non-magical option (like -B).
        Don't append_arg `-x' twice.

Fri Jan 10 23:36:00 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * top.c [BUILT_FOR_270] (ffe_decode_option): Make
        -fargument-noalias-global the default.

Fri Jan 10 07:42:27 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Enable inlining of previously-compiled program units:
        * com.c (ffecom_do_entry_, ffecom_start_progunit_):
        Register new public function in ffeglobal database.
        (ffecom_sym_transform_): Any GLOBAL or potentially GLOBAL
        symbol should be looked up in ffeglobal database and
        that tree node used, if found.  That way, gcc knows
        the references are to those earlier definitions, so it
        can emit shorter branches/calls, inline, etc.
        (ffecom_transform_common_): Minor change for clarity.
        * expr.c (ffeexpr_sym-lhs_call_, ffeexpr_sym_lhs_extfunc_,
        ffeexpr_sym_rhs_actualarg_, ffeexpr_paren_rhs_let_,
        ffeexpr_token_funsubstr_): Globalize symbol as needed.
        * global.c (ffeglobal_promoted): New function to look up
        existing local symbol in ffeglobal database.
        * global.h: Declare new function.
        * name.h (ffename_token): New macro, plus alphabetize.
        * stc.c (ffestc_R1207_item): Globalize EXTERNAL symbol.
        * stu.c (ffestu_sym_end_transition, ffestu_sym_exec_transition):
        Globalize symbol as needed.
        * symbol.h, symbol.c (ffesymbol_globalize): New function.

Thu Jan  9 14:20:00 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * ste.c (ffeste_R809): Produce a diagnostic for SELECT CASE
        on CHARACTER type, instead of crashing.

Thu Jan  9 00:52:45 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * stc.c (ffestc_order_entry_, ffestc_order_format_,
        ffestc_R1226): Allow ENTRY and FORMAT before IMPLICIT
        NONE, by having them transition only to state 1 instead
        of state 2 (which is disallowed by IMPLICIT NONE).

Mon Jan  6 22:44:53 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix AXP bug found by Rick Niles (961201-1.f):
        * com.c (ffecom_init_0): Undo my 1996-05-14 change, as
        it is incorrect and prevented easily finding this bug.
        * target.h [__alpha__] (ffetargetReal1, ffetargetReal2):
        Use int instead of long.
        (ffetarget_cvt_r1_to_rv_, ffetarget_cvt_rv_to_r1_,
        ffetarget_cvt_r2_to_rv_, ffetarget_cvt_rv_to_r2_):
        New functions that intercede for callers of
        REAL_VALUE_(TO|UNTO)_TARGET_(SINGLE|DOUBLE).
        All callers changed, and damaging casts to (long *) removed.

Sun Jan  5 03:26:11 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in (g77, g77-cross): Depend on both g77.c and
        zzz.c, in $(srcdir)/f/.

        Better design for -fugly-assumed:
        * stc.c (ffestc_R501_item, ffestc_R524_item,
        ffestc_R547_item_object): Pass new is_ugly_assumed flag.
        * stt.c, stt.h (ffestt_dimlist_as_expr,
        ffestt_dimlist_type): New is_ugly_assumed flag now
        controls whether "1" is treated as "*".
        Don't treat "2-1" or other collapsed constants as "*".

Sat Jan  4 15:26:22 1997  Craig Burley  <burley@gnu.ai.mit.edu>

        * stb.c (ffestb_R10012_): Don't confirm on FORMAT(A,)
        or even FORMAT(A,,B), as R1229 only warns about the
        former currently, and this seems reasonable.

        Improvements to diagnostics:
        * sta.c (ffesta_second_): Don't add any ffestb parsers
        unless they're specifically called for.
        Set up ffesta_tokens[0] before calling ffestc_exec_transition,
        else stale info might get used.
        (ffesta_save_): Do a better job picking which parser to run
        after running all parsers with no confirmed possibles.
        (FFESTA_maxPOSSIBLES_): Decrease from 100 now that so few
        possibles are ever on the list at a given time.
        (struct _ffesta_possible): Add named attribute.
        (ffesta_add_possible_exec_, ffesta_add_possible_nonexec_):
        Make these into macros that call a single function that now
        sets the named attribute.
        (ffesta_add_possible_unnamed_exec_,
        ffeseta_add_possible_unnamed_nonexec_): New macros.
        (ffesta_second_): Designate unnamed possibles as
        appropriate.
        * stb.c (ffestb_R1229, ffestb_R12291_): Use more general
        diagnostic, so things like "POINTER (FOO, BAR)" are
        diagnosed as unrecognized statements, not invalid statement
        functions.
        * stb.h, stb.c (ffestb_unimplemented): Remove function.

1996-12-30  Dave Love  <d.love@dl.ac.uk>

        * com.c: #include libU77/config.h
        (ffecom_f2c_ptr_to_integer_type_node,
        ffecom_f2c_ptr_to_integer_type_node): New variables.
        (ffecom_init_0): Use them.
        (ffecom_expr_intrinsic_): Many news cases for libU77 intrinsics.

        * com-rt.def: New definitions for libU77.
        * intrin.def: Likewise.  Also correct ftell arg spec.

        * Makefile.in (f/runtime/libU77/config.h): New target for com.c
        dependency.
        * Make-lang.in (f771): Depend on f/runtime/Makefile for the above.

Sat Dec 28 12:28:29 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * stt.c (ffestt_dimlist_type):  Treat ([...,]1) in dimlist
        as ([...,]*) if -fugly-assumed, so assumed-size array
        detected early enough.

Thu Dec 19 14:01:57 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * target.h (FFETARGET_REAL_VALUE_FROM_INT_): Conditionalize
        definition on BUILT_FOR_280, not BUILT_WITH_280, since
        the name of the macro was (properly) changed since 0.5.19.

        Fix warnings/errors resulting from ffetargetOffset becoming
        `long long int' instead of `unsigned long' as of 0.5.19,
        while ffebitCount remains `unsigned long':
        * bld.c (ffebld_constantarray_dump): Avoid warnings by
        using loop var of appropriate type, and using casts.
        * com.c (ffecom_expr_): Use right type for loop var.
        (ffecom_sym_transform_, ffecom_transform_equiv_):
        Cast to right type in assertions.
        * data.c (ffedata_gather_, ffedata_value_): Cast to right
        type in assertions and comparisons.

Wed Dec 18 12:07:11 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        Patch from Alexandre Oliva <oliva@dcc.unicamp.br>:
        * Makefile.in (all.indirect): Don't pass -bbigtoc option
        to GNU ld.

        Cope with new versions of gcc:
        * com.h (BUILT_FOR_280): New macro.
        * com.c (ffecom_ptr_to_expr): Conditionalize test of
        OFFSET_REF.
        (ffecom_build_complex_constant_): Conditionalize calling
        sequence for build_complex.

Sat Dec  7 07:15:17 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * Version 0.5.19 released.

Fri Dec  6 12:23:55 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * g77.c: Default to assuming "f77" is in $LANGUAGES, since
        the LANGUAGE_F77 macro isn't defined by anyone anymore (but
        might as well leave the no-f77 code in just in case).
        * Make-lang.in (g77, g77-cross): Don't define LANGUAGE_F77
        anymore.

1996-12-06  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in (g77, g77-cross): Revert to building `g77' or not
        conditional on `f77' in LANGUAGES.

Wed Dec  4 13:08:44 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in (g77, g77-cross): No libs or lib dependencies
        in case where "f77" is not in $LANGUAGES.

        * lex.c (ffelex_image_char_, ffelex_file_fixed,
        ffelex_file_free): Fixes to properly handle lines with
        null character, and too-long lines as well.

        * lex.c: Call ffebad_start_msg_lex instead of
        ffebad_start_msg throughout.

Sun Dec  1 21:19:55 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        Fix-up for 1996-11-25 changes:
        * com.c (ffecom_member_phase2_): Subtract out 0 offset for
        elegance and consistency with EQUIVALENCE aggregates.
        (ffecom_sym_transform_): Ditto for LOCAL/COMMON, and
        ensure we get the same parent storage area.
        * data.c (ffedata_gather_, ffedata_value_): Subtract out
        aggregate offset.

Wed Nov 27 13:55:57 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * proj.h: Quote the text of the #error message, to avoid
        strange-looking diagnostics from non-gcc ANSI compilers.

        * top.c: Make -fno-debug-kludge the default.

Mon Nov 25 20:13:45 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        Provide more info on EQUIVALENCE mismatches:
        * bad.def (FFEBAD_EQUIV_MISMATCH): More detailed message.
        * equiv.c (ffeequiv_layout_local_, ffeequiv_layout_cblock):
        More details for FFEBAD_EQUIV_MISMATCH.

        Fix problem with EQUIVALENCE handling:
        * equiv.c (ffeequiv_layout_local_): Redesign algorithm --
        old one was broken, resulting in rejection of good code.
        (ffeequiv_offset_): Add argument, change callers.
        Clean up the code, fix up the (probably unused) negative-value
        case for SYMTER.
        * com.c (ffecom_sym_transform_): For local EQUIVALENCE
        member, subtract out aggregate offset (which is <= 0).

Thu Nov 21 12:44:56 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        Change type of ffetargetOffset from `unsigned long' to `long long':
        * bld.c (ffebld_constantarray_dump): Change printf formats.
        * storag.c (ffestorag_dump): Ditto.
        * symbol.c (ffesymbol_report): Ditto.
        * target.h (ffetargetOffset_f): Ditto and change type itself.

        Handle situation where list of languages does not include f77:
        * Make-lang.in: Define LANGUAGE_F77 to 1 only if `f77' is in
        the $LANGUAGES macro for the build.
        * g77.c: Compile to a (nearly) no-op program if LANGUAGE_F77
        is not defined to 1.

        Fixes to delay confirmation of READ, WRITE, and GOTO statements
        so the corresponding assignments to same-named CHAR*(*) arrays
        work:
        * stb.c (ffestb_R90915_, ffestb_91014_): New functions.
        (ffestb_goto3_, ffestb_goto5_): Move confirmation from 3 to 5
        for the OPEN_PAREN case.
        (ffestb_R9091_, ffestb_R9094_, ffestb_R90913_, ffestb_R90914_,
        ffestb_R91012_, ffestb_R91013_): Use new functions, and confirm
        except for the OPEN_PAREN case.

        Fixes to not confirm declarations with an open paren where
        an equal sign or other assignment-like token might be, so the
        corresponding assignments to same-named CHAR*(*) arrays work:
        (ffestb_decl_entsp_5_): Move assertion so we crash on that first,
        if it turns out to be wrong, before the less-debuggable crash
        on mistaken confirmation.
        (ffestb_decl_entsp_6_, ffestb_decl_entsp_7_, ffestb_decl_entsp_8_):
        Include OPEN_PAREN in list of assignment-only tokens.

        Fix more diagnosed-crash bugs:
        * stu.c (ffestu_sym_end_transition): ANY-ize an adjustable array
        with bad dimension expressions even if still stateUNCERTAIN.
        (ffestu_symter_end_transition_, ffestu_symter_exec_transition_):
        Return TRUE for opANY as well.
        For code elegance, move opSYMTER case into first switch.

1996-11-17  Dave Love  <d.love@dl.ac.uk>

        * lex.c: Fix last change.

1996-11-14  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in, config-lang.in: Remove the (broken) libU77 stuff,
        pending 0.5.20.

Thu Nov 14 15:40:59 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * bad.def (FFEBAD_UNIMPL_STMT): Explain that invalid
        intrinsic references can trigger this message, too.

1996-11-12  Dave Love  <d.love@dl.ac.uk>

        * lex.c: Declare dwarfout routines.

        * config-lang.in: Sink grep o/p.

Mon Nov 11 14:21:13 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * g77.c (main): Might as well print version number
        for --verbose as well.

Thu Nov  7 18:41:41 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * expr.c, lang-options.h, target.h, top.c, top.h: Split out
        remaining -fugly stuff into -fugly-logint and -fugly-comma,
        leaving -fugly as simply a `macro' that expands into other
        options, and eliminate defaults for some of the ugly stuff
        in target.h.

        * Make-lang.in (gcc-cross): Compile zzz.c, not version.o (!),
        in to get version info for this target.

        * config-lang.in: Test for GBE patch application based
        on whether 2.6.x or 2.7.x GBE is detected.

Wed Nov  6 14:19:45 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in (g77): Compile zzz.c in to get version info.
        * g77.c: Add support for --help and --version.

        * g77.c (lookup_option): Short-circuit long-winded tests
        when second char is not hyphen, just to save a spot of time.

Sat Nov  2 13:50:31 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * intrin.def: Add FTELL and FSEEK intrinsics, plus new
        `g' codes for alternate-return (GOTO) arguments.
        * intrin.c (ffeintrin_check_): Support `g' codes.
        * com-rt.def: Add ftell_() and fseek_() to database.
        * com.c (ffecom_expr_intrinsic_): Ditto.  Also, let each
        subroutine intrinsic decide for itself what to do with
        tree_type, the default being NULL_TREE once again (so
        ffecom_call_ doesn't think it's supposed to cast the
        function call to the type in the fall-through case).

        * ste.c (ffeste_R909_finish): Don't special-case list-directed
        I/O, now that libf2c can return non-zero status codes.
        (ffeste_R910_finish): Ditto.
        (ffeste_io_call_): Simplify logic.
        (ffeste_io_impdo_):
        (ffeste_subr_beru_):
        (ffeste_R904):
        (ffeste_R907):
        (ffeste_R909_start):
        (ffeste_R909_item):
        (ffeste_R909_finish):
        (ffeste_R910_start):
        (ffeste_R910_item):
        (ffeste_R910_finish):
        (ffeste_R911_start):
        (ffeste_R923A): Ditto all the above.

Thu Oct 31 20:56:28 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * config-lang.in, Make-lang.in: Rename flag file
        build-u77 to build-libu77, for consistency with
        install-libf2c and such.

        * config-lang.in: Don't complain about failure to patch
        if pre-2.7.0 gcc is involved (since our patch for that
        doesn't add support for tooning).

Sat Oct 26 05:56:51 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * bad.def (FFEBAD_TYPELESS_TOO_LARGE): Remove this
        unused and redundant diagnostic.

Sat Oct 26 00:45:42 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * target.c (ffetarget_integerhex): Fix dumb bug.

1996-10-20  Dave Love  <d.love@dl.ac.uk>

        * gbe/2.7.2.1.diff: New file.

        * Makefile.in (F771_LDFLAGS): Add -bbigtoc for AIX4.1 up, suggested by
        endo@material.tohoku.ac.jp [among others!].

Sat Oct 19 03:11:14 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * bad.def, bld.c, bld.h, expr.c, lang-options.h, target.c,
        target.h, top.c, top.h (ffebld_constant_new_integerbinary,
        ffebld_constant_new_integerhex, ffebld_constant_new_integeroctal,
        ffeexpr_token_name_apos_name_, ffetarget_integerbinary,
        ffetarget_integerhex, ffetarget_integeroctal): Support
        new -fno-typeless-boz option with new functions, mods to
        existing octal-handling functions, new macros, new error
        messages, and so on.

        * com.c, lang-options.h, top.c, top.h (ffecom_notify_primary_entry):
        Print program unit name on stderr if -fno-silent (new option).

        * lang-options.h, top.c, top.h, stt.c (ffestt_dimlist_as_expr):
        Treat ([...,]1) in dimlist as ([...,]*) if -fugly-assumed
        (new option).

        * lang-options.h: Comment out options duplicated in gcc/toplev.c,
        because, somehow, having them commented in and building on my
        DEC Alpha results in a cc1 that always segfaults, and gdb that
        also segfaults whenever it debugs it up to init_lex() calling
        xmalloc() or so.

Thu Oct 17 00:39:27 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * stb.c (ffestb_R10013_): Don't change meaning of .sign until
        after previous meaning/value used to set sign of value
        (960507-1.f).

Sun Oct 13 22:15:23 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * top.c (ffe_decode_option): Don't set back-end flags
        that are nonexistent prior to gcc 2.7.0.

Sun Oct 13 12:48:45 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (convert): Don't convert emulated complex expr to
        real (via REALPART_EXPR) if the target type is (emulated)
        complex.

Wed Oct  2 21:57:12 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_debug_kludge_): Set DECL_IN_SYSTEM_HEADER so
        -Wunused doesn't complain about these manufactured decls.
        (ffecom_expr_): Ditto, for original (non-ASSIGN'ed) variable.
        (ffecom_transform_equiv_): Clear DECL_IGNORED_P for aggregate
        area so it shows up as a debug-accessible symbol.
        (pushdecl): Default for "invented" identifiers (a g77-specific
        concept for now) is that they are artificial, in system header,
        ignored for debugging purposes, used, and (for types) suppressed.
        This ought to be overkill.

Fri Sep 27 23:13:07 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * ste.c (ffeste_begin_iterdo_, ffeste_end_iterdo_): Support
        one-trip DO loops (F66-style).
        * lang-options.h, top.c, top.h (-fonetrip): New option.

Thu Sep 26 00:18:40 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_debug_kludge_): New function.
        (ffecom_sym_transform_): Use new function for COMMON and EQUIVALENCE
        members.

        * lang-options.h, top.c, top.h (-fno-debug-kludge):
        New option.
  
1996-09-24  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in (include/f2c.h):
        Remove dependencies on xmake_file and tmake_file.
        They expand inconsistently in 2.8 c.f. 2.7; $(GCC_PARTS) depends on
        them anyhow.

1996-09-22  Dave Love  <d.love@dl.ac.uk>

        * config-lang.in: Add --enable-libu77 option handling.

        * Make-lang.in:
        Conditionally add --enable-libu77 when running runtime configure.
        Define LIBU77STAGESTUFF and use it in relevant rules.

1996-08-21  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in (f77-runtime):
        `stmp-hdrs' should have been `stmp-headers'.

1996-08-20  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in (f77-runtime):
        Depend on stmp-hdrs, not stmp-int-hdrs, since libF77
        needs float.h.

Sat Jun 22 18:17:11 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_tree_divide_): Fix RECORD_TYPE case to
        look at type of first field, properly, to determine
        whether to call c_div or z_div.

Tue Jun  4 04:27:18 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_build_complex_constant_): Explicitly specify
        TREE_PURPOSE.
        (ffecom_expr_): Fix thinko.
        (ffecom_2): For COMPLEX_EXPR, explicitly specify TREE_PURPOSE.

Mon May 27 16:23:43 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        Changes to optionally avoid gcc's back-end complex support:
        * com.c (ffecom_stabilize_aggregate_): New function.
        (ffecom_convert_to_complex_): New function.
        (ffecom_make_complex_type_): New function.
        (ffecom_build_complex_constant_): New function.
        (ffecom_expr_): For opCONVERT of non-COMPLEX to COMPLEX,
        don't bother explicitly converting to the subtype first,
        because gcc does that anyway, and more code would have
        to be added to find the subtype for the emulated-complex
        case.
        (ffecom_f2c_make_type_): Use ffecom_make_complex_type_
        instead of make_node etc. to make a complex type.
        (ffecom_1, ffecom_2): Translate operations on COMPLEX operands
        to appropriate operations when emulating complex.
        (ffecom_constantunion): Use ffecom_build_complex_constant_
        instead of build_complex to build a complex constant.
        (ffecom_init_0): Change point at which types are laid out
        for improved consistency.
        Use ffecom_make_complex_type_ instead of make_node etc.
        to make a complex type.
        Always calculate storage sizes from TYPE_SIZE, never TYPE_PRECISION.
        (convert): Use e, not expr, since we've copied into that anyway.
        For RECORD_TYPE cases, do emulated-complex conversions.
        (ffecom_f2c_set_lio_code_): Always calculate storage sizes
        from TYPE_SIZE, never TYPE_PRECISION.
        (ffecom_tree_divide_): Allow RECORD_TYPE to also be handled
        by run-time library.
        (ffecom_expr_intrinsic_): Handle possible RECORD_TYPE as argument
        to AIMAG intrinsic.

        * top.h, top.c, lang-options.h: Support new -f(no-)emulate-complex option.

        * com.c (ffecom_sym_transform_): Clarify and fix typos in comments.

Mon May 20 02:06:27 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * target.h: Use new REAL_VALUE_UNTO_TARGET_* macros instead
        of REAL_VALUE_FROM_TARGET_DOUBLE and _SINGLE.
        Explicitly use long instead of HOST_WIDE_INT for emulation
        of ffetargetReal1 and ffetargetReal2.

1996-05-20  Dave Love  <d.love@dl.ac.uk>

        * config-lang.in:
        Test for patch being applied with flag_move_all_movables in toplev.c.

        * install.texi (Patching GNU Fortran):
        Mention overriding X_CFLAGS rather than
        editing proj.h on SunOS4.

        * Make-lang.in (F77_FLAGS_TO_PASS):
        Add X_CFLAGS (convenient for SunOS4 kluge, in
        particular).
        (f77.{,mostly,dist}clean): Reorder things, in particular not to delete
        Makefiles too early.

        * g77.c (DEFAULT_SWITCH_TAKES_ARG): Define a la gcc.c in the
        current GCC snapshot.

Tue May 14 00:24:07 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        Changes for DEC Alpha AXP support:
        * com.c (ffecom_init_0): REAL_ARITHMETIC means internal
        REAL/DOUBLE PRECISION might well have a different size
        than the compiled type, so don't crash if this is the
        case.
        * target.h: Use `int' for ffetargetInteger1,
        ffetargetLogical1, and magical tests.  Set _f format
        strings accordingly.

Tue Apr 16 14:08:28 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * top.c (ffe_decode_option): -Wall no longer implies
        -Wsurprising.

Sat Apr 13 14:50:06 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_char_args_): If item is error_mark_node,
        set *length that way, too.

        * com.c (ffecom_expr_power_integer_): If either operand
        is error_mark_node, return that.

        * com.c (ffecom_intrinsic_len_): If item is error_mark_node,
        return that for length.

        * expr.c (ffeexpr_declare_unadorned_,
        ffeexpr_declare_parenthesized_): Instead of crashing
        on unexpected contexts, produce a diagnostic.

        * intrin.c (ffeintrin_check_), intrin.def (impSIGNAL):
        Allow procedure as second arg to SIGNAL intrinsic.

        * stu.c (ffestu_symter_end_transition_): New function.
        (ffestu_symter_exec_transition_): Return bool arg.
        Always transition symbol (don't inhibit when !whereNONE).
        (ffestu_sym_end_transition): If DUMMY/LOCAL arg has any
        opANY exprs in its dimlist, diagnose it so it doesn't
        make it through to later stages that try to deal with
        dimlist stuff.
        (ffestu_sym_exec_transition): If sym has any opANY exprs
        in its dimlist, diagnose it so it becomes opANY itself.

        * symbol.c (ffesymbol_error): If token arg is NULL,
        just ANY-ize the symbol -- don't produce diagnostic.

Mon Apr  1 10:14:02 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * Version 0.5.18 released.

Mon Mar 25 20:52:24 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_expr_power_integer_): Don't generate code
        that compares COMPLEX (or, as it happens, REAL) via "LT_EXPR",
        since the back end crashes on that.  (This code would never
        be executed anyway, but the test that avoids it has now been
        translated to control whether the code gets generated at all.)
        Fixes 960323-3.f.

        * com.c (ffecom_type_localvar_): Handle variable-sized
        dimension bounds expressions here, so they get calculated
        and saved on procedure entry.  Fixes 960323-4.f.

        * com.c (ffecom_notify_init_symbol): Symbol has no init
        info at all if only zeros have been used to initialize it.
        Fixes 960324-0.f.

        * expr.c, expr.h (ffeexpr_type_combine): Renamed from
        ffeexpr_type_combine_ and now a public procedure; last arg now
        a token, instead of an internal structure used to extract a token.
        Now allows the outputs to be aliased with the inputs.
        Now allows a NULL token to mean "don't report error".
        (ffeexpr_reduced_bool2_, ffeexpr_reduced_eqop2_,
        ffeexpr_reduced_math2_, ffeexpr_reduced_power_,
        ffeexpr_reduced_relop2_): Handle new calling sequence for
        ffeexpr_type_combine.
        * (ffeexpr_convert): Don't put an opCONVERT node
        in just because the size is unknown; all downstream code
        should be able to deal without it being there anyway, and
        getting rid of it allows new intrinsic code to more easily
        combine types and such without generating bad code.
        * info.c, info.h (ffeinfo_kindtype_max): Rewrite to do
        proper comparison of size of types, not just comparison
        of their internal kind numbers (so I2.eq.I1 doesn't promote
        I1 to I2, rather the other way around).
        * intrin.c (ffeintrin_check_): Combine types of arguments
        in COL a la expression handling, for greater flexibility
        and permissiveness (though, someday, -fpedantic should
        report use of this kind of thing).
        Make sure Hollerith/typeless where CHARACTER expected is
        rejected.  This all fixes 960323-2.f.

        * ste.c (ffeste_begin_iterdo_): Fix some more type conversions
        so INTEGER*2-laden DO loops don't crash at compile time on
        certain machines.  Believed to fix 960323-1.f.

        * stu.c (ffestu_sym_end_transition): Certainly reject
        whereDUMMY not in any dummy list, whether stateUNCERTAIN
        or stateUNDERSTOOD.  Fixes 960323-0.f.

Tue Mar 19 13:12:40 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * data.c (ffedata_value): Fix crash on opANY, and simplify
        the code at the same time.

        * Make-lang.in (f77-runtime): Also depends on lib[FI]77/Makefile...
        (include/f2c.h...): ...which in turn depend on */Makefile.in.
        (f77.rebuilt): Rebuild runtime stuff too.

        * intrin.c (ffeintrin_check_): Accommodate TYPELESS/HOLLERITH
        types, convert args as necessary, etc.

        * expr.c (ffeexpr_convert): Fix test for TYPELESS/HOLLERITH
        to obey the docs; crash if no source token when error.
        (ffeexpr_collapse_convert): Crash if no token when error.

Mon Mar 18 15:51:30 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_init_zero_): Renamed from
        ffecom_init_local_zero_; now handles top-level
        (COMMON) initializations too.

        * bld.c (ffebld_constant_is_zero):
        * com.c (ffecom_symbol_transform_, ffecom_sym_transform_assign_,
        ffecom_transform_common_, ffecom_transform_equiv_):
        * data.c:
        * equiv.c:
        * equiv.h:
        * lang-options.h:
        * stc.c:
        * storag.c:
        * storag.h:
        * symbol.c:
        * symbol.h:
        * target.c:
        * target.h:
        * top.c:
        * top.h: All of this is mostly housekeeping-type changes
        to support -f(no-)zeros, i.e. not always stuff zero
        values into the initializer fields of symbol/storage objects,
        but still track that they have been given initial values.

        * bad.def: Fix wording for DATA-related diagnostics.

        * com.c (ffecom_sym_transform_assign_): Don't check
        any EQUIVALENCE stuff for local ASSIGN, the check was
        bad (crashing), and it's not necessary, anyway.

        * com.c (ffecom_expr_intrinsic_): For MAX and MIN,
        ignore null arguments as far arg[123], and fix handling
        of ANY arguments.  (New intrinsic support now allows
        spurious trailing null arguments.)

        * com.c (ffecom_init_0): Add HOLLERITH (unsigned)
        equivalents for INTEGER*2, *4, and *8, so shift intrinsics
        and other things that need unsigned versions of signed
        types work.

Sat Mar 16 12:11:40 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * storag.c (ffestorag_exec_layout): Treat adjustable
        local array like dummy -- don't create storage object.
        * com.c (ffecom_sym_transform_): Allow for NULL storage
        object in LOCAL case (adjustable array).

Fri Mar 15 13:09:41 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_sym_transform_): Allow local symbols
        with nonconstant sizes (adjustable local arrays).
        (ffecom_type_localvar_): Allow dimensions with nonconstant
        component (adjustable local arrays).
        * expr.c: Various minor changes to handle adjustable
        local arrays (a new case of stateUNCERTAIN).
        * stu.c (ffestu_sym_end_transition,
        ffestu_sym_exec_transition): Ditto.
        * symbol.def: Update docs to reflect these changes.

        * com.c (ffecom_expr_): Reduce space/time needed for
        opACCTER case by handling it here instead of converting
        it to opARRTER earlier on.
        (ffecom_notify_init_storage): Don't convert ACCTER to ARRTER.
        (ffecom_notify_init_symbol): Ditto.

        * com.c (ffecom_init_0): Crash and burn if any of the types'
        sizes, according to the GBE, disagrees with the sizes of
        the FFE's internal implementation.  This might catch
        Alpha/SGI bugs earlier.

Fri Mar 15 01:09:41 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com-rt.def, com.c, com.h: Changes for rewrite of intrinsic
        handling.
        * com.c (ffecom_arglist_expr_): New function.
        (ffecom_widest_expr_type_): New function.
        (ffecom_expr_intrinsic_): Reorganize, some rewriting.
        (ffecom_f2c_make_type_): Layout complex types.
        (ffecom_gfrt_args_): New function.
        (ffecom_list_expr): Trivial change for consistency.

        * expr.c (ffeexpr_token_name_rhs_): Go back to getting
        type from specific, not implementation, info.
        (ffeexpr_token_funsubstr_): Set intrinsic implementation too!
        * intrin.c: Major rewrite of most portions.
        * intrin.def: Major rearchitecting of tables.
        * intrin.h (ffeintrin_basictype, ffeintrin_kindtype):
        Now (once again) take ffeintrinSpec as arg, not ffeintrinImp;
        for now, these return NONE, since they're not really needed
        and adding the necessary info to the tables is not trivial.
        (ffeintrin_codegen_imp): New function.
        * stc.c (ffestc_R1208_item): Change way ffeintrin funcs called,
        back to original per above; but comment out the code anyway.

        * intrin.c (ffe_init_0): Do internal checks only if
        -fset-g77-defaults not specified.

        * lang-options.h: Add -fset-g77-defaults option.
        * lang-specs.h: Always pass -fset-g77-defaults.
        * top.c, top.h: New option.

Sat Mar  9 17:49:50 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in (stmp-int-hdrs): Use --no-validate when
        generating the f77.rebuilt files (BUGS, INSTALL, NEWS)
        so cross-references can work properly in g77.info
        without a lot of hassle.  Users can probably deal with
        the way they end up looking in the f77.rebuilt files.

        * bld.c (ffebld_constant_new_integer4_val): INTEGER*8
        support -- new function.
        (ffebld_constant_new_logical4_val): New function.
        * com.c (ffecom_f2c_longint_type_node): New type.
        (FFECOM_rttypeLONGINT_): New return type code.
        (ffecom_expr_): Add code to invoke pow_qq instead
        of pow_ii for INTEGER4 (INTEGER*8) case.
        If ffecom_expr_power_integer_ returns NULL_TREE, just do
        the usual work.
        (ffecom_make_gfrt_): Handle new type.
        (ffecom_expr_power_integer_): Let caller do the work if in
        dummy-transforming case, since
        caller now knows about INTEGER*8 and such, by returning
        NULL_TREE.
        * expr.c (ffeexpr_reduced_power_): Complain about non-INTEGER
        raised to INTEGER4 (INTEGER*8) power.

        * target.c (ffetarget_power_integerdefault_integerdefault):
        Fix any**negative.
        * com.c (ffecom_expr_power_integer_): Fix (-1)**(-8) and similar
        to ABS() the integral result if the exponent is negative
        and even.

        * ste.c (ffeste_begin_iterdo_): Clean up a type ref.
        Always convert iteration count to _default_ INTEGER.

        * sta.c (ffesta_second_): Add BYTE and WORD type/stmts;
        changes by Scott Snyder <snyder@d0sgif.fnal.gov>.
        * stb.c (ffestb_decl_recursive): Ditto.
        (ffestb_decl_recursive): Ditto.
        (ffestb_decl_entsp_2_): Ditto.
        (ffestb_decl_entsp_3_): Ditto.
        (ffestb_decl_funcname_2_): Ditto.
        (ffestb_decl_R539): Ditto.
        (ffestb_decl_R5395_): Ditto.
        * stc.c (ffestc_establish_declstmt_): Ditto.
        * std.c (ffestd_R539item): Ditto.
        (ffestd_R1219): Ditto.
        * stp.h: Ditto.
        * str-1t.fin: Ditto.
        * str-2t.fin: Ditto.

        * expr.c (ffeexpr_finished_): For DO loops, allow
        any INTEGER type; convert LOGICAL (assuming -fugly)
        to corresponding INTEGER type instead of always default
        INTEGER; let later phases do conversion of DO start,
        end, incr vars for implied-DO; change checks for non-integral
        DO vars to be -Wsurprising warnings.
        * ste.c (ffeste_io_impdo_): Convert start, end, and incr
        to type of DO variable.

        * com.c (ffecom_init_0): Add new types for [IL][234],
        much of which was done by Scott Snyder <snyder@d0sgif.fnal.gov>.
        * target.c: Ditto.
        * target.h: Ditto.

Wed Mar  6 14:08:45 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * top.c (ffe_init_gbe_): Make -frerun-loop-opt the default.

Mon Mar  4 12:27:00 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * expr.c (ffeexpr_exprstack_push_unary_): Really warn only
        about two successive _arithmetic_ operators.

        * stc.c (ffestc_R522item_object): Allow SAVE of (understood)
        local entity.

        * top.c (ffe_decode_option): New -f(no-)second-underscore options.
        * top.h: New options.
        * com.c (ffecom_get_external_identifier_, ffecom_get_identifier_):
        New options.

        * Make-lang.in (f77.maintainer-clean): Clean f/BUGS, f/INSTALL,
        f/NEWS.
        ($(srcdir)/f/BUGS, $(srcdir)/f/INSTALL, $(srcdir)/f/NEWS):
        New rules.
        ($(srcdir)/f/g77.info, $(srcdir)/f/g77.dvi): Depend on
        f/bugs.texi and f/news.texi.
        (f77.install-man): Install f77 man pages (if enabled).
        (f77.uninstall): Uninstall info docs, f77 man pages (if enabled).

        * top.c (ffe_init_gbe_): New function.
        (ffe_decode_option, ffe_file): Call ffe_init_gbe_ to
        set defaults for gcc options.

Sat Jan 20 13:57:19 1996  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_get_identifier_): Eliminate needless
        comparison of results of strchr.

Tue Dec 26 11:41:56 1995  Craig Burley  <burley@gnu.ai.mit.edu>

        * Make-lang.in: Add rules for new files g77.texi, g77.info,
        and g77.dvi.
        Reorganize the *clean rules to more closely parallel gcc's.

        * config-lang.in: Exclude g77.info from diffs.

Sun Dec 10 02:29:13 1995  Craig Burley  <burley@gnu.ai.mit.edu>

        * expr.c (ffeexpr_declare_unadorned_,
        ffeexpr_declare_parenthesized_): Break out handling of
        contextDATAIMPDO[INDEX,CTRL] so it's independent of symbol state.
        Don't exec-transition these here (let ffeexpr_sym_impdoitem_
        handle that when appropriate).  Don't "declare" them twice.

Tue Dec  5 06:48:26 1995  Craig Burley  <burley@gnu.ai.mit.edu>

        * stc.c (ffestc_promote_sfdummy_): Allow whereNONE parent
        symbol, since it is not necessarily known whether it will
        become LOCAL or DUMMY.

Mon Dec  4 03:46:55 1995  Craig Burley  <burley@gnu.ai.mit.edu>

        * lex.c (ffelex_display_token, ffelex_type_string_): Resurrect
        these from their old versions and update them for possible invocation
        from debugger.
        * lex.h (ffelex_display_token): Declare this in case anyone
        else wants to call it.

        * lex.c (ffelex_total_tokens_): Have this reflect actual allocated
        tokens, no longer include outstanding "uses" of tokens.

        * malloc.c, malloc.h (MALLOC_DEBUG): New macro to control
        checking of whether callers follow rules, now defaults to 0
        for "no checking" to improve compile times.

        * malloc.c (malloc_pool_kill): Fix bug that could prevent
        subpool from actually being killed (wasn't setting its use
        count to 1).

        * proj.h, *.c (dmpout): Replace all occurrences of `stdout'
        and some of `stderr' with `dmpout', so where to dump debugging
        output can be easily controlled during build; add default
        for `dmpout' of `stderr' to proj.h.

Sun Dec  3 00:56:29 1995  Craig Burley  <burley@gnu.ai.mit.edu>

        * com.c (ffecom_return_expr): Eliminate attempt at warning
        about unset return values, since the back end does this better,
        with better wording, and is not triggered by clearly working
        (but spaghetti) code as easily as this test.

Sat Dec  2 08:28:56 1995  Craig Burley  <burley@gnu.ai.mit.edu>

        * target.c (ffetarget_power_*_integerdefault): Raising 0 to
        integer constant power should not be an error condition;
        if so, other code should catch 0 to any power, etc.

        * bad.def (FFEBAD_BAD_POWER): 0**integer now a warning instead
        of an error.

Fri Dec  1 00:12:03 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * bad.def: Clarify diagnostic regarding complex constant elements.
        * expr.c (ffeexpr_cb_comma_c_): Capitalize real/imaginary
        for clarified diagnostic.

        * com.c (ffecom_close_include_): Close the file!

        * lex.c (ffelex_file_fixed): Update line info if the line
        has any content, not just if it finishes a previous line
        or has a label.
        (ffelex_file_free): Clarify switch statement code.

Sat Nov 18 19:37:22 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.17 released.

Fri Nov 17 14:27:24 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Make-lang.in: Fix typo in comment.

        * Makefile.in (f/fini.o, f/proj-h.o): Don't use `$<' since
        not all makes support it (e.g. NeXT make), use explicit
        source name instead (with $(srcdir) and munging).
        (ASSERT_H): assert.h lives in source dir, not build dir.

Thu Nov 16 12:47:50 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_init_0): Fix dumb bug in code to produce
        warning message about non-32-bit-systems.

        * stc.c (ffestc_R501_item): Parenthesize test to make
        warning go away (and perhaps fix bug).

Thu Nov 16 03:43:33 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * g77.c: Upgrade to 2.7.0's gcc.c.
        Fix -v to pass a temp name instead of "/dev/null" for "-o".

Fri Nov 10 19:16:05 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * ste.c (ffeste_begin_iterdo_): Add Toon's change to
        make loops faster on some machines (implement termination
        condition as "--i >= 0" instead of "i-- > 0").

Thu Nov  2 03:58:17 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Make-lang.in: Remove unnecessary $(exeext) a la cp/Make-lang.in.

        * com.c (ffecom_expr_): Restore old strategy for assignp variant
        of opSYMTER case...always return the ASSIGN version of var.
        That way, `-O -Wuninitialized' will catch "I=3;GOTO I;END"
        (though the diagnostic will refer to `__g77_ASSIGN_i').

        * com.c (ffecom_expr_power_integer_): For constant rhs case,
        wrap every new eval of lhs in save_expr() so it is clear to
        back end that MULT_EXPR(lhs,lhs) has identical operands,
        otherwise for an rhs like 32767 it generates around 65K pseudo
        registers, with which stupid_life_analysis cannot cope
        (due to reg_renumber in regs.h being `short *' instead of
        `int *').

        * com.c (ffecom_expr_): Speed up implementation of LOGICAL
        versions of opNOT, opAND, opOR, opXOR/opNEQV, and opEQV by
        assuming the values actually are kosher LOGICAL bit patterns.
        Also simplify code that implements some of the INTEGER versions
        of these.

        * com.c (skip_redundant_dir_prefix, read_name_map,
        ffecom_open_include_, signed_type, unsigned_type): Fold in
        changes to cccp.c made from 2.7.0 through ss-950826.

        * equiv.c (ffeequiv_layout_local_): Kill the equiv list
        if no syms in list.

        * expr.c (ffeexpr_reduced_eqop2_): Issue specific diagnostic
        regarding usage of .EQV./.NEQV. in preference to .EQ./.NE..

        * intrin.c: Add ERF and ERFC as generic intrinsics.
        intrin.def: Same.

        * sta.c (ffesta_save_, ffesta_second_): Whoever calls
        ffestd_exec_begin must also set ffesta_seen_first_exec = TRUE,
        and anytime stc sees an exec transition, it must do both.
        stc.c (ffestc_eof): Same.

        * stc.c (ffestc_promote_sfdummy_): If failed implicit typing
        or CHARACTER*(*) arg, after calling ffesymbol_error, don't
        reset info to ENTITY/DUMMY, because ffecom_sym_transform_
        doesn't expect such a thing with ANY/ANY type.

        * target.h (*logical*): Change some of these so they parallel
        changes in com.c, e.g. for _eqv_, use (l)==(r) instead of
        !!(l)==!!(r), to get a more faithful result.

Fri Oct 27 07:06:59 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_sym_transform_): Simplify code for local
        EQUIVALENCE case.

        * expr.c (ffeexpr_exprstack_push_unary_): Warn about two
        successive operators.
        (ffeexpr_exprstack_push_binary_): Warn about "surprising"
        operator precedence, as in "-2**2".

        * lang-options.h: Add -W(no-)surprising options.

        * parse.c (yyparse): Don't reset -fpedantic if not -pedantic.

        * top.c (ffe_decode_option): Support new -Wsurprising option.
        * top.h: Ditto.

Mon Oct 23 09:14:15 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_finish_symbol_transform_): Don't transform
        NONE/NONE (CHARACTER*(*)) vars, as these don't mean anything
        in debugging terms, and can't be turned into anything
        in the back end (so ffecom_sym_transform_ crashes on them).

        * com.c (ffecom_expr_): Change strategy for assignp variant
        of opSYMTER case...always return the original var unless
        it is not wide enough.

        * ste.c (ffeste_io_cilist_): Clarify diagnostic for ASSIGN
        involving too-narrow variable.  This shouldn't happen, though.
        (ffeste_io_icilist_): Ditto.
        (ffeste_R838): Ditto.
        (ffeste_R839): Ditto.

Thu Oct 19 03:21:20 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_sym_transform_assign_): Set TREE_STATIC
        using the same decision-making process as used for their twin
        variables, so ASSIGN can last across RETURN/CALL as appropriate.

Fri Sep 22 20:21:18 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Makefile.in: fini is a host program, so it needs a host-compiled
        version of proj.o, named proj-h.o.  f/fini, f/fini.o, and
        f/proj-h.o targets updated accordingly.

        * com.c (__eprintf): New function.

Wed Sep 20 02:26:36 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * lang-options.h: Add omitted -funix-intrinsics-* options.

        * malloc.c (malloc_find_inpool_): Check for infinite
        loop, crash if detected (user reports encountering
        them in some large programs, this might help track
        down the bugs).

Thu Sep  7 13:00:32 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (lang_print_error_function): Don't dereference null
        pointer when outside any program unit.
        (ffecom_let_char_, ffecom_arg_ptr_to_expr): If catlist
        item or length ever error_mark_node, don't continue processing,
        since back-end functions like build_pointer_type crash on
        error_mark_node's (due to pushing bad obstacks, etc.).

Wed Aug 30 15:58:35 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.16 released.

Mon Aug 28 12:24:20 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * bad.c (ffebad_finish): Fix botched message when no places
        are printed (due to unknown line info, etc.).

        * std.c (ffestd_subr_labels_): Do a better job finding
        line info in the case of typeANY and diagnostics.

Fri Aug 25 15:19:29 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (DECL_ARTIFICIAL): Surround all references to this
        macro with #if !BUILT_FOR_270 and #endif.
        (init_lex): Surround print_error_function decl with
        #if !BUILT_FOR_270 and #endif.
        (lang_init): Call new ffelex_hash_kludge function to solve
        problem with preprocessed files that have INCLUDE statements.

        * lex.c (ffelex_getc_): New function.
        (ffelex_cfelex_): Use ffelex_getc_ instead of getc in any
        paths of code that can be affected by ffelex_hash_kludge.
        Don't make an EOF token for unrecognized token; set token
        to NULL instead, to avoid problems when not initialized.
        (ffelex_hash_): Use ffelex_getc_ instead of getc in any
        paths of code that can be affected by ffelex_hash_kludge.
        Test token returned by ffelex_cfelex_ for NULL, meaning
        unrecognized token.
        Get rid of useless used_up variable.
        Don't do ffewhere stuff or kill any tokens if in
        ffelex_hash_kludge.
        (ffelex_file_fixed, ffelex_file_free): Use ffelex_getc_
        instead of getc in any paths of code that can be affected
        by ffelex_hash_kludge.
        (ffelex_hash_kludge): New function.

        * lex.h (ffelex_hash_kludge): New function.

Wed Aug 23 15:17:40 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c: Implement -f(no-)underscoring options by always
        compiling in code to do it, and having that code inhibit
        itself when -fno-underscoring is in effect.  This option
        overrides -f(no-)f2c for this purpose; -f(no-)f2c returns
        to it's <=0.5.15 behavior of affecting only how code
        is generated, not how/whether names are mangled.

        * target.h: Redo specification of appending underscores so
        the macros are named "_default" instead of "_is" and the
        two-underscore macro defaults to 1.

        * top.c, top.h (underscoring): Add appropriate stuff
        for the -f(no-)underscoring options.

Tue Aug 22 10:25:01 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * bad.c (ffebad_finish): Call report_error_function (in toplev.c)
        to better identify location of problem.
        Say "(continued):" instead of "(continued:)" for consistency.

        * com.c (ffecom_gen_sfuncdef_): Set and reset new
        ffecom_nested_entry_ variable to hold ffesymbol being compiled.
        (lang_print_error_function): New function from toplev.c.
        Use ffecom_nested_entry_ to help determine which name
        and kind-string to print.
        (ffecom_expr_intrinsic_): Handle EXIT and FLUSH invocations
        with different calling sequences than library functions.
        Have SIGNAL and SYSTEM push and pop calltemps, and convert
        their return values to the destination type (just in case).
        (FFECOM_rttypeINT_): New return type for `int', in case
        gcc/f/runtime/libF77/system_.c(system_) is really supposed
        to return `int' instead of `ftnint'.

        * com.h (report_error_function): Declare this.

        * equiv.c (ffeequiv_layout_local_): Don't forget to consider
        root variable itself as possible "first rooted variable",
        else might never set symbol and then crash later.

        * intrin.c (ffeintrin_check_exit_): Change to allow no args
        and rename to ffeintrin_check_int_1_o_ for `optional'.
        #define ffeintrin_check_exit_ and _flush_ to this new
        function, so intrin.def can refer to the appropriate names.

        * intrin.def (FFEINTRIN_impFLUSH): Validate using
        ffeintrin_check_flush_ so passing an INTEGER arg is allowed.

        * lex.c (ffelex_file_push_, ffelex_file_pop_): New functions
        to manage input_file_stack in gbe.
        (ffelex_hash_): Call new functions (instead of doing code).
        (ffelex_include_): Call new functions to update stack for
        INCLUDE (_hash_ handles cpp output of #include).

Mon Aug 21 08:09:04 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Makefile.in: Put `-W' in front of every `-Wall', since
        2.7.0 requires that to engage `-Wunused' for parameters.

        * com.c: Mark all parameters as artificial, so
        `-W -Wunused' doesn't complain about unused ones (since
        there's no way right not to individually specify attributes
        like `unused').

        * proj.h: Don't #define UNUSED if already defined, regardless
        of host compiler.

Sun Aug 20 16:03:56 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * gbe/2.7.0.diff: Regenerate.

        * lang-options.h, lang-specs.h: If not __STDC__ (ANSI C),
        avoid doing anything, especially the stringizing in -specs.h.

Thu Aug 17 03:36:12 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * lang-specs.h: Remove useless optional settings of -traditional,
        since -traditional is always set anyway.

Wed Aug 16 16:56:46 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Make-lang.in (F2C_INSTALL_FLAG, F2CLIBOK): More
        control over whether to install f2c-related stuff.
        (install-f2c-*): New targets to install f2c-related
        stuff in system, not just gcc, directories.

        * com.c: Change calls to ffecom_get_invented_identifier
        to use generally more predictable names.
        Change calls to build_range_type to ensure consistency
        of types of operands.
        (ffecom_get_external_identifier_): Change to accept
        symbol info, not just text, so it can use f2c flag for
        symbol to decide whether to append underscore(s).
        (ffecom_get_identifier_): Don't change names if f2c flag
        off for compilation.
        (ffecom_type_permanent_copy_): Use same type for new max as
        used for min.
        (ffecom_notify_init_storage): Offline fixups for stand-alone.

        * data.c (ffedata_gather): Explicitly test for common block,
        since it's no longer always the case that a local EQUIVALENCE
        group has no symbol ptr (it now can, if a user-predictable
        "rooted" symbol has been identified).

        * equiv.c: Add some debugging stuff.
        (ffeequiv_layout_local_): Set symbol ptr with user-predictable
        "rooted" symbol, for giving the invented aggregate a
        predictable name.

        * g77.c (append_arg): Allow for 20 extra args instead of 10.
        (main): For version-only case, add `-fnull-version' and, unless
        explicitly omitted, `-lf2c -lm'.

        * lang-options.h: New "-fnull-version" option.

        * lang-specs.h: Support ".fpp" suffix for preprocessed source
        (useful for OS/2, MS-DOS, other case-insensitive systems).

        * stc.c (ffestc_R544_equiv_): Swap way lists are merged so this
        is consistent with the order in which lists are built, making
        user predictability of invented aggregate name much higher.

        * storag.c, storag.h (FFESTORAG_typeDUMMY): Delete this enum.

        * top.c: Accept, but otherwise ignore, `-fnull-version'.

Tue Aug 15 07:01:07 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * DOC, INSTALL, PROJECTS: Extensive improvements to documentation.

Sun Aug 13 01:55:18 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * INSTALL (f77-install-ok): Document the use of this file.

        * Make-lang.in (F77_INSTALL_FLAG): New flag to control
        whether to install an `f77' command (based on whether
        a file named `f77-install-ok' exists in the source or
        build directory) to replace the broken attempt to use
        comment lines to avoid installing `f77' (broken in the
        sense that it prevented installation of `g77').

Mon Aug  7 06:14:26 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * DOC: Add new sections for g77 & gcc compiler options,
        source code form, and types, sizes and precisions.
        Remove lots of old "delta-version" info, or at least
        summarize it.

        * INSTALL: Add info here that used to be in DOC.
        Other changes.

        * g77.c (lookup_option, main): Check for --print-* options,
        so we avoid adding version-determining stuff.

Wed Jul 26 15:51:03 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Make-lang.in, Makefile.in (input.j, INPUT_H): New file.
        Update dependencies accordingly.

        * bad.c (ffebad_here): Okay to use unknown line/col.

        * compilers.h (@f77-cpp-input): Remove -P option now that
        # directives are handled by f771.  Update other options
        to be more consistent with @c in gcc/gcc.c.  Don't run f771
        if -E specified, etc., a la @c.
        (@f77): Don't run f771 if -E specified, etc., a la @c.

        * config-lang.in: Avoid use of word "guaranteed".

        * input.j: New file to wrap around gcc/input.h.

        * lex.j: Add support for parsing # directives output by cpp.
        (ffelex_cfebackslash_): New function.
        (ffelex_cfelex_): New function.
        (ffelex_get_directive_line_): New function.
        (ffelex_hash_): New function.
        (ffelex_include_): Change to not use ffewhere_file_(begin|end).
        Also fix bug in pointing to next line (for diagnostics, &c)
        following successful INCLUDE.
        (ffelex_next_line_): New function that does chunk of code
        seen in several places elsewhere in the lexers.
        (ffelex_file_fixed): Delay finishing statement until source
        line is registered with ffewhere, so INCLUDE processing
        picks up the info correctly.
        Okay to kill or use unknown line/col objects now.
        Handle HASH (#) lines.
        Reorder tests for insubstantial lines to put most frequent
        occurrences at top, for possible minor speedup.
        Some general consolidation of code.
        (ffelex_file_free): Handle HASH (#) lines.
        Okay to kill or use unknown line/col objects now.
        Some general consolidation of code.
        (ffelex_init_1): Detect HASH (#) lines.
        (ffelex_set_expecting_hollerith): Okay to kill or use unknown
        line/col objects now.

        * lex.h (FFELEX_typeHASH): New enum.

        * options-lang.h (-fident, -fno-ident): New options.

        * stw.c (ffestw_update): Okay to kill unknown line/col objects
        now.

        * target.h (FFETARGET_okREALQUAD, FFETARGET_okCOMPLEXDOUBLE,
        FFETARGET_okCOMPLEXQUAD): #define these appropriately.

        * top.c: Include flag.j wrapper, not flags.h directly.
        (ffe_is_ident_): New flag.
        (ffe_decode_option): Handle -fident and -fno-ident.
        (ffe_file): Replace obsolete ffewhere_file_(begin|end) with
        ffewhere_file_set.

        * top.h (ffe_is_ident_, ffe_is_ident, ffe_set_is_ident):
        New flag and access functions.

        * where.c, where.h: Remove all tracking of parent file.
        (ffewhere_file_begin, ffewhere_file_end): Delete these.
        (ffewhere_line_use): Make it work with unknown line object.

Mon Jul 17 03:04:09 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_sym_transform_): Set DECL_IN_SYSTEM_HEADER
        flag for any local vars used as stmtfunc dummies or DATA
        implied-DO iter vars, so no -Wunused warnings are produced
        for them (a la f2c).
        (ffecom_init_0): Do "extern int xargc;" for IARGC() intrinsic.
        Warn if target machine not 32 bits, since g77 isn't yet
        working on them at all well.

        * expr.c (ffeexpr_sym_lhs_call_, ffeexpr_sym_lhs_data_,
        ffeexpr_sym_lhs_extfunc_, ffeexpr_sym_rhs_actualarg_,
        ffeexpr_sym_rhs_let_, ffeexpr_paren_rhs_let_): Don't
        gratuitously set attr bits that don't apply just
        to avoid null set meaning error; instead, use explicit
        error flag, and allow null attr set, to
        fix certain bugs discovered by looking at this code.

        * g77.c: Major changes to improve support for gcc long options,
        to make `g77 -v' report more useful info, and so on.

Mon Jul  3 14:49:16 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * DOC, com.c, intrin.h, intrin.c, intrin.def, target.h, top.c,
        top.h: Add new `unix' group of intrinsics, which includes the
        newly added ERF, ERFC, EXIT, plus even newer ABORT, DERF, DERFC,
        FLUSH, GETARG, GETENV, SIGNAL, and SYSTEM.

Tue Jun 27 23:01:05 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * bld.c, bld.h (ffebld_constant_pool,
        ffebld_constant_character_pool): Use a single macro (the
        former) to access the pool for allocating constants, instead
        of latter in public and FFEBLD_CONSTANT_POOL_ internally
        in bld.c (which was the only one that was correct before
        these changes).  Add verification of integrity of certain
        heap-allocated areas.

        * com.c (ffecom_overlap_, ffecom_args_overlap_,
        ffecom_tree_canonize_ptr_, ffecom_tree_canonize_ref_): New
        functions to optimize calling COMPLEX and, someday, CHARACTER
        functions requiring additional argument to be passed.
        (ffecom_call_, ffecom_call_binop_, ffecom_expr_,
        ffecom_expr_intrinsic_): Change calling
        sequences to include more info on possible destination.
        (ffecom_expr_intrinsic_): Add ERF(), ERFC(), and EXIT()
        intrinsic code.
        (ffecom_sym_transform_): For assumed-size arrays, set high
        bound to highest possible value instead of low bound, to
        improve validity of overlap checking.
        (duplicate_decls): If olddecl and newdecl are the same,
        don't do any munging, just return affirmative.

        * expr.c: Change ffecom_constant_character_pool() to
        ffecom_constant_pool().

        * info.c (ffeinfo_new): Compile this version if not being
        compiled by GNU C.

        * info.h (ffeinfo_new): Don't define macro if not being
        compiled by GNU C.

        * intrin.c, intrin.def: Add ERF(), ERFC(), and EXIT() intrinsics.
        (ffeintrin_check_exit_): New for EXIT() subroutine intrinsic.

        * malloc.c, malloc.h (malloc_verify_*): New functions to verify
        integrity of heap-storage areas.

        * stc.c (ffestc_R834, ffestc_R835): Handle possibility that
        an enclosing DO won't have a construct name even when the
        CYCLE/EXIT does (i.e. without dereferencing NULL).

        * target.c, target.h (ffetarget_verify_character1): New function
        to verify integrity of heap storage used to hold character constant.

Thu Jun 22 15:36:39 1995  Howard Gordon  (flash@super.org)

        * stp.h (ffestpVxtcodeIx): Fix typo in typedef for this.

Mon May 29 15:22:31 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * *: Make all sorts of changes to accommodate upcoming gcc-2.7.0.
        I didn't keep track of them, nor just when I made them, nor
        when I (much later, probably in early August 1995) modified
        them so they could properly handle both 2.7.0 and 2.6.x.

        * com.c (ffecom_expr_power_integer_): Don't expand_start_stmt_expr
        if transforming dummy args, because the back end cannot handle
        that (it's rejected by the gcc front end), just generate
        call to run-time library.
        Back out changes in 0.5.15 because more temporaries might be
        needed anyway (for COMPLEX**INTEGER).
        (ffecom_push_tempvar): Remove inhibitor.
        Around start_decl and finish_decl (in particular, arround
        expand_decl, which is called by them), push NULL_TREE into
        sequence_rtl_expr, an external published by gcc/function.c.
        This makes sure the temporary is truly in the function's
        context, not the inner context of a statement-valued expression.
        (I think the back end is inconsistent here, but am not
        interested in convincing the gbe maintainers about this now.)
        (pushdecl): Make sure that when pushing PARM_DECLs, nothing
        other than them are pushed, as happened for 0.5.15 and which,
        if done for other reasons not fixed here, might well indicate
        some other problem -- so crash if it happens.

        * equiv.c (ffeequiv_layout_local_): If the local equiv group
        has a non-nil COMMON field, it should mean that an error has
        occurred and been reported, so just trash the local equiv
        group and do nothing.

        * stc.c (ffestc_promote_sfdummy_): Set sfdummy arg state to
        UNDERSTOOD so above checking for duplicate args actually
        works, and so we don't crash later in pushdecl.

        * ste.c (ffeste_R1001): Set initial value only for VAR_DECLs,
        not for, e.g., LABEL_DECLs, which the FORMAT label can be
        if it was previously treated as an executable label.

Sat May 20 01:53:53 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_sym_transform_): For adjustable arrays,
        pass high bound through variable_size in case its primaries
        are changed (dumb0.f, and this might also improve
        performance so it approaches f2c|gcc).

Fri May 19 11:00:36 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.15 released.

        * com.c (ffecom_expr_power_integer_): Push temp vars
        before expanding a statement expression, since that seems
        to cause temp vars to be "forgotten" after the end of the
        expansion in the back end.  Disallow more temp-var
        pushing during such an expansion, just in case.
        (ffecom_push_tempvar): Crash if a new variable needs to be
        pushed but cannot be at this point (should never happen).

Wed May 17 12:26:16 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * expr.c (ffeexpr_collapse_convert): Add code to convert
        LOGICAL to CHARACTER.  Reject conversion of REAL or COMPLEX
        to CHARACTER entirely, as it cannot be supported with all
        configurations.

        * target.h, target.c (ffetarget_convert_character1_logical1):
        New function.

Sun May 14 00:00:09 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_do_entry_, ffecom_gen_sfuncdef_,
        ffecom_start_progunit_, ffecom_sym_transform_,
        ffecom_init_0, start_function): Changes to have REAL
        external functions return same type as DOUBLE PRECISION
        external functions when -ff2c is in force; while at it,
        some code cleanups done.

        * stc.c (ffestc_R547_item_object): Disallow array declarator
        if one already exists for symbol.

        * ste.c (ffeste_R1227): Convert result variable to type
        of function result as seen by back end (e.g. for when REAL
        external function actually returns result as double).

        * target.h (FFETARGET_defaultFIXED_LINE_LENGTH): New
        macro for default for -ffixed-line-length-N option.

        * top.c (ffe_fixed_line_length_): Initialize this to new
        target.h macro instead of constant 72.

Tue May  9 01:20:03 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * lex.c (ffelex_send_token_): If sending CHARACTER token with
        null text field, put a single '\0' in it and set length/size
        fields to 0 (to fix 950508-0.f).
        (ffelex_image_char_): When setting ffelex_bad_line_ to TRUE,
        always "close" card image by appending a null char and setting
        ffelex_card_length_.  As part of this, append useful text
        to identify the two kinds of problems that involve this.
        (ffelex_file_fixed): Reset ffelex_bad_line_ to FALSE after
        seeing a line with invalid first character (fixes 950508-1.f).
        If final nontab column is zero, assume tab seen in line.
        (ffelex_card_image_): Always make this array 8 characters
        longer than reflected by ffelex_card_size_.
        (ffelex_init_1): Get final nontab column info from top instead
        of assuming 72.

        * options-lang.h: Add -ffixed-line-length- prefix.

        * top.h: Add ffe_fixed_line_length() and _set_ version, plus
        corresponding extern.

        * top.c: Handle -ffixed-line-length- option prefix.

Fri Apr 28 05:40:25 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.14 released.

        * Make-lang.in: Add assert.j.

        * Makefile.in: Add assert.j.

        * assert.j: New file.

Thu Apr 27 16:24:22 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * bad.h (ffebad_severity): New function.

        * bad.c (ffebad_severity): New function.

        * bad.def (FFEBAD_OPEN_INCLUDE): Change severity from SEVERE
        to FATAL, since processing continues, and that seems fine.

        * com.c: Add facility to handle -I.
        (ffecom_file, ffecom_close_include, ffecom_open_include,
        ffecom_decode_include_option): New global functions for -I.
        (ffecom_file_, ffecom_initialize_char_syntax_,
        ffecom_close_include_, ffecom_decode_include_option_,
        ffecom_open_include_, append_include_chain, open_include_file,
        print_containing_files, read_filename_string, file_name_map,
        savestring): New internal functions for -I.

        * compilers.h: Pass -I flag(s) to f771 (via "%{I*}").

        * lex.c (ffelex_include_): Call ffecom_close_include
        to close include file, for its tracking needs for -I,
        instead of using fclose.

        * options-lang.h: Add -I prefix.

        * parse.c (yyparse): Call ffecom_file for main input file,
        so -I handling works (diagnostics).

        * std.c (ffestd_S3P4): Have ffecom_open_include handle
        opening and diagnosing errors with INCLUDE files.

        * ste.c (ffeste_begin_iterdo_): Use correct algorithm for
        calculating # of iterations -- mathematically similar but
        computationally different algorithm was not handling cases
        like "DO I=6,5,2" correctly, because (5-6)/2+1 => 1, not 0.

        * top.c (ffe_decode_option): Allow -I, restructure a bit
        for clarity and, maybe, speed.

Mon Apr 17 13:31:11 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * g77.c: Remove -lc, turns out not all systems has it, but
        leave other changes in for clarity of code.

Sun Apr 16 21:50:33 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_expr_): Implement ARRAY_EXPR as INDIRECT_REF
        of appropriate PLUS_EXPRs of ptr_to_expr of array, to see
        if this generates better code.  (Conditional on
        FFECOM_FASTER_ARRAY_REFS.)

Sun Apr 16 00:22:48 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Make-lang.in (F77_SRCS): Remove g77.c, since it doesn't
        contribute to building f771.

        * Makefile.in (dircheck): Remove/replace with f/Makefile, because
        phony targets that are referenced in other real targets get run
        when those targets are specified, which is a waste of time (e.g.
        when rebuilding and only g77.c has changed, f771 was being linked
        anyway).

        * g77.c: Include -lc between -lf2c and -lm throughout.

        * implic.c (ffeimplic_establish_symbol): If -Wimplicit, warn if
        implicit type given to symbol.

        * lex.c (ffelex_include_): Don't gratuitously increment line
        number here.

        * top.h, top.c (ffe_is_warn_implicit_): New global variable and
        related access macros.
        (ffe_decode_option): Handle -W options, including -Wall and
        -Wimplicit.

        * where.c (ffewhere_line_new): Don't muck with root line (was
        crashing on null input since lexer changes over the past week
        or so).

Thu Apr 13 16:48:30 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_init_0): Register built-in functions for cos,
        sin, and sqrt.
        (ffecom_tree_fun_type_double): New variable.
        (ffecom_expr_intrinsic_): Update f2c input and output files
        to latest version of f2c (no important g77-related changes
        noted, just bug fixes to f2c and such).
        (builtin_function): New function from c-decl.c.

        * com-rt.def: Refer to built-in functions for cos, sin, and sqrt.

Thu Apr 13 10:25:09 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_expr_intrinsic_): Convert 0. to appropriate
        type to keep DCMPLX(I) from crashing the compiler.
        (ffecom_expr_): Don't convert result from ffecom_tree_divide_.
        (ffecom_tree_divide_): Add tree_type argument, have all callers
        pass one, and don't convert right-hand operand to it (this is
        to make this new function work as much like the old in-line
        code used in ffecom_expr_ as possible).

        * lex.c: Maintain lineno and input_filename the way the gcc
        lexer does.

        * std.c (ffestd_exec_end): Save and restore lineno and
        input_filename around the second pass, which sets them
        appropriately for each saved statement.

Wed Apr 12 09:44:45 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_expr_power_integer_): New function.
        (ffecom_expr_): Call new function for power op with integer second
        argument, for generating better code.  Also replace divide
        code with call to new ffecom_tree_divide_ function.
        Canonicalize calls to ffecom_truth_value(_invert).
        (ffecom_tree_divide_): New function.

Wed Apr  5 14:15:44 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * lex.c: Change to allocate text for tokens only when actually
        needed, which should speed compilation up somewhat.
        Change to allow INCLUDE at any point where a statement
        can end, i.e. in ffelex_finish_statement_ or when a SEMICOLON
        token is sent.
        Remove some old, obsolete code.
        Clean up layout of entire file to improve formatting,
        readability, etc.
        (ffelex_set_expecting_hollerith): Remove include argument.

Fri Mar 31 23:19:08 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * bad.h, bad.c (ffebad_start_msg, ffebad_start_msg_lex):
        New functions to generate arbitrary messages.
        (FFEBAD_severityPEDANTIC): New severity, to correspond
        to toplev's pedwarn() function.

        * lex.c (ffelex_backslash_): New function to implement
        backslash processing.
        (ffelex_file_fixed, ffelex_file_free): Implement new
        backslash processing.

        * std.c (ffestd_R1001dump_): Don't assume CHARACTER and
        HOLLERITH tokens stop at '\0' characters, now that backslash
        processing is supported -- use their advertised lengths instead,
        and double up the '\002' character for libf2c.

Mon Mar 27 17:10:33 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_init_local_zero_): Implement -finit-local-zero.
        (ffecom_sym_transform_): Same.
        (ffecom_transform_equiv_): Same.

        * options-lang.h: Add -f(no-)(init-local-zero,backslash,ugly-init).

        * stb.c (ffestb_V020): Reject "TYPEblah(...", which might be
        an array assignment.

        * target.h, top.h, top.c: Implement -finit-local-zero.

Fri Mar 24 19:56:22 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Make-lang.in, Makefile.in: Remove conf-proj(.in) and
        proj.h(.in) rules, plus related config.log, config.cache,
        and config.status stuff.

        * com.c (ffecom_init_0): Change messages when atof(), bsearch(),
        or strtoul() do not work as expected in the start-up test.

        * conf-proj, conf-proj.in: Delete.

        * lex.c (ffelex_file_fixed): Allow f2c's '&' in column 1
        to mean continuation line.

        * options-lang.h: New file, #include'd by ../toplev.c.

        * proj.h.in: Rename back to proj.h.

        * proj.h (LAME_ASSERT): Remove.
        (LAME_STDIO): Remove.
        (NO_STDDEF): Remove.
        (NO_STDLIB): Remove.
        (NO_BSEARCH): Remove auto detection, rename to !FFEPROJ_BSEARCH.
        (NO_STRTOUL): Remove auto detection, rename to !FFEPROJ_STRTOUL.
        (USE_HOST_LIMITS): Remove (maybe still needed by stand-alone?).
        (STR, STRX): Do only ANSI C definitions.

Mon Mar 13 10:46:13 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * BUGS: Add item about g77 requiring gcc to compile it.

        * NEWS: New file listing user-visible changes in the release.

        * PROJECTS: Update to include a new item or two, and modify
        or delete items that are addressed in this or previous releases.

        * bad.c (ffebad_finish): Don't crash if missing string &c,
        just substitute obviously distressed string "[REPORT BUG!!]"
        for cases where the message/caller are fudgy.

        * bad.def: Clean up error messages in a major way, add new ones
        for use by changes in target.c.

        * com.c (ffecom_expr_): Handle opANY in opCONVERT.
        (ffecom_let_char_): Disregard destinations with ERROR_MARK.
        (ffecom_1, ffecom_1_fn, ffecom_2, ffecom_2s, ffecom_3,
        ffecom_3s, &c): Check all inputs for error_mark_node.
        (ffecom_start_progunit_): Don't transform all symbols
        in BLOCK DATA, since it never executes, and it is silly
        to, e.g., generate all the structures for NAMELIST.
        (ffecom_char_length_expr_): Rename to ffecom_intrinsic_len_.
        (ffecom_intrinsic_ichar_): New function to handle ICHAR of
        arbitrary expression with possible 0-length operands.
        (ffecom_expr_intrinsic_): Use ffecom_intrinsic_char_.
        For MVBITS, set tree_type to void_type_node.
        (ffecom_start_progunit_): Name master function for entry points
        after primary entry point so users can easily guess it while
        debugging.
        (ffecom_arg_ptr_to_expr): Change treatment of Hollerith,
        Typeless, and %DESCR.
        (ffecom_expr_): Change treatment of Hollerith.

        * data.c (ffedata_gather_): Handle opANY in opCONVERT.

        * expr.c (ffeexpr_token_apostrophe_): Issue FFEBAD_NULL_CHAR_CONST
        warning as necessary.
        (ffeexpr_token_name_rhs_): Set context for args to intrinsic
        so that assignment-like concatenation is allowed for ICHAR(),
        IACHAR(), and LEN() intrinsics.
        (ffeexpr_reduced_*_): Say "an array" instead of "an entity" in
        diagnostics, since it's more informative.
        (ffeexpr_finished_): For many contexts, check for null expression
        and array before trying to do a conversion, to avoid redundant
        diagnostics.

        * g77.1: Fix typo for preprocessed suffix (.F, not .f).

        * global.c (ffeglobal_init_common): Warn if initializing
        blank common.
        (ffeglobal_pad_common): Enable code to warn if initial
        padding needed.
        (ffeglobal_size_common): Complain if enlarging already-
        initialized common, since it won't work right anyway.

        * intrin.c: Add IMAG() intrinsic.
        (ffeintrin_check_loc_): Allow opSUBSTR in LOC().

        * intrin.def: Add IMAG() intrinsic.

        * lex.c: Don't report FFEBAD_NULL_CHAR_CONST errors.

        * sta.c, sta.h, stb.c: Changes to clean up error messages (see
        bad.def).

        * stb.c (ffestb_R100113_): Issue FFEBAD_NULL_CHAR_CONST
        warning as necessary.

        * stc.c (ffestc_shriek_do_): Don't try to reference doref_line
        stuff in ANY case, since it won't be valid.
        (ffestc_R1227): Allow RETURN in main program unit, with
        appropriate warnings/errors.
        (ffestc_subr_format_): Array of any type is a CHAREXPR (F77 C5).

        * ste.c (ffeste_begin_doiter_): Couple of fixes to accurately
        determine if loop never executes.

        * target.c (ffetarget_convert_*_hollerith_): Append spaces,
        not zeros, to follow F77 Appendix C, and to warn when
        truncation of non-blanks done.
        (ffetarget_convert_*_typeless): Rewrite to do typeless
        conversions properly, and warn when truncation done.
        (ffetarget_print_binary, ffetarget_print_octal,
        ffetarget_print_hex): Rewrite to use new implementation of
        typeless.
        (ffetarget_typeless_*): Rewrite to use new implementation
        of typeless, and to warn about overflow.

        * target.h (ffetargetTypeless): New implementation of
        this type.

        * type.h, type.c (ffetype_size_typeless): Remove (incorrect)
        implementation of this function and its extern.

Sun Mar  5 18:46:42 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * BUGS: Clarify that constant handling would also fix lack of
        adequate IEEE-754/854 support to some degree, and typeless
        and non-decimal constants.

        * com.c (ffecom_type_permanent_copy_): Comment out to avoid
        warnings.
        (duplicate_decls): New function a la gcc/c-decl.c.
        (pushdecl): Use duplicate_decls to decide whether to return
        existing decl or new one, instead of always returning existing
        decl.
        (ffecom_expr_): opPERCENT_LOC now supports CHARACTER arguments.
        (ffecom_init_0): Give f2c I/O code 0 for basictypeANY/kindtypeANY.
        (ffecom_sym_transform_): For adjustable arrays, pass low bound
        through variable_size in case its primaries are changed (950302-1.f).

        * com.h: More decls that belong in tree.h &c.

        * data.c (ffedata_eval_integer1_): Fix opPAREN case to not
        treat value of expression as an error code.

        * expr.c (ffeexpr_finished_): Allow opSUBSTR in contextLOC case.

        * proj.c: Add "const" as appropriate.

Mon Feb 27 10:04:03 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * bad.def (FFEBAD_BAD_SUBSTR): Fix bad grammar in message.

Fri Feb 24 16:21:31 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.13 released.

        * INSTALL: Warn that f/zzz.o will compare differently between
        stages, since it puts the __TIME__ macro into a string.

        * com.c (ffecom_sym_transform_): Transform kindFUNCTION/whereDUMMY
        to pointer-to-function, not function.
        (ffecom_expr_): Use ffecom_arg_ptr_to_expr instead of
        ffecom_char_args_ to handle comparison between CHARACTER
        types, so either operand can be a CONCATENATE.
        (ffecom_transform_common_): Set size of initialized common area
        to global (largest-known) size, even though size of init might
        be smaller.

        * equiv.c (ffeequiv_offset_): Check symbol info for ANY.

        * expr.c (ffeexpr_find_close_paren_, ffeexpr_nil_*): New functions
        to handle following the contour of a rejected expression, so
        statements like "PRINT(I,I,I)=0" don't cause the PRINT statement
        code to get the second passed back to it as if there was a
        missing close-paren before it, the comma causing the PRINT code
        to confirm the statement, resulting in an ambiguity vis-a-vis
        the let statement code.
        Use the new ffecom_find_close_paren_ handler when an expected
        close-paren is missing.
        (ffeexpr_isdigits_): New function, use in all places that
        currently use isdigit in repetitive code.
        (ffeexpr_collapse_symter): Collapse to ANY if init-expr is ANY,
        so as to avoid having symbol get "transformed" if used to
        dimension an array.
        (ffeexpr_token_real_, ffeexpr_token_number_real_): Don't issue
        diagnostic about exponent, since it'll be passed along the
        handler path, resulting in a diagnostic anyway.
        (ffeexpr_token_apos_char_): Use consistent handler path
        regardless of whether diagnostics inhibited.
        (ffeexpr_token_name_apos_name_): Skip past closing quote/apos
        even if not a match or other diagnostic issued.
        (ffeexpr_sym_impdoitem_): Exec-transition local SEEN symbol.

        * lex.c (ffelex_image_char_): Set ffelex_saw_tab_ if TAB
        seen, not if anything other than TAB seen!

        * stc.c (ffestc_R537_item): If source is ANY but dest isn't,
        set dest symbol's init expr to ANY.
        (ffestc_R501_attrib, ffestc_R522, ffestc_R522start): Complain
        about conflict between "SAVE" by itself and other uses of
        SAVE only in pedantic mode.

        * ste.c (ffeste_R1212): Fix loop over labels to always
        increment caseno, to avoid pushcase returning 2 for duplicate
        values when one of the labels is invalid.

Thu Feb 23 12:42:04 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.12 released.

        * Make-lang.in (f77.install-common): Add "else true;" before outer
        "fi" per Makefile.in patch.

        * Makefile.in (dircheck): Add "else true;" before "fi" per
        patch from chs1pm@surrey.ac.uk.

        * com.c (ffecom_push_tempvar): If type desired is ERROR_MARK,
        return error_mark_node, to avoid crash that results from
        making a VAR_DECL with error_mark_node as its type.

        * ste.c (ffeste_begin_iterdo_): Convert itercount to INTEGER
        anytime calculation of number of iterations ends up with type
        other than INTEGER (e.g. DOUBLE PRECISION, REAL).

Thu Feb 23 02:48:38 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.11 released.

        * DOC: Explain -fugly-args.

        * bad.def (FFEBAD_ACTUALARG): Explain -fugly-args and how to
        rewrite code to not require it.

        * com.c (ffecom_vardesc_): Handle negative type code, just in
        case.
        (ffecom_arg_ptr_to_expr): Let ffecom_expr handle hollerith
        and typeless constants (move code to ffecom_constantunion).
        (ffecom_constantunion): Handle hollerith and typeless constants.

        * expr.c (ffecom_finished_): Check -fugly-args in actual-arg
        context where hollerith/typeless provided.

        * intrin.def (FFEINTRIN_genDFLOAT): Add FFEINTRIN_specDFLOAT.
        (FFEINTRIN_specDFLOAT): Add as f2c intrinsic.

        * target.h (ffetarget_convert_real[12]_integer,
        ffetarget_convert_complex[12]_integer): Pass -1 for high integer
        value if low part is negative.
        (FFETARGET_defaultIS_UGLY_ARGS): New macro.

        * top.c (ffe_is_ugly_args_): New variable.
        (ffe_decode_option): Handle -fugly-args and -fno-ugly-args.

        * top.h (ffe_is_ugly_args_, ffe_is_ugly_args(),
        ffe_set_is_ugly_args()): New variable and macros.

Thu Feb 23 02:48:38 1995  Pedro A M Vazquez  (vazquez@iqm.unicamp.br)

        * g77.c (sys_errlist): Use const for __FreeBSD__ systems
        as well.

Wed Feb 22 13:33:43 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.10 released.

        * CREDITS: Add Rick Niles.

        * INSTALL: Note how to get around lack of makeinfo.

        * Make-lang.in (f/proj.h): Remove # comment.

        * Makefile.in (f/proj.h): Remove # comment.

        * com.c (ffecom_expr_): Simplify opFUNCREF/opSUBRREF conversion.
        (ffecom_sym_transform_): For whereGLOBAL and whereDUMMY
        kindFUNCTION, use ffecom_tree_fun_type[][] only for non-constant
        (non-statement-function) f2c functions.
        (ffecom_init_0): ffecom_tree_fun_type[][] and _ptr_to_*_* are
        really f2c-interface arrays, so use base type void for COMPLEX
        (like CHARACTER).

Tue Feb 21 19:01:18 1995  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in (f77.install-common): Expurgate the test for and
        possible installation of f2c in line with elsewhere.  Seems to have
        been missing a semicolon anyhow!

Tue Feb 21 11:45:25 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.9 released.

        * Make-lang.in (f/proj.h): touch file to register update,
        because the previous commands won't necessarily modify it.

        * Makefile.in (f/proj.h): touch file to register update,
        because the previous commands won't necessarily modify it.

        * Makefile.in (f/str-*.h, f/str-*.j): Explicitly specify
        output file names, so these targets go in build, not source,
        directory.

        * bits.c, bits.h: Switch to valid ANSI C replacement for
        ARRAY_ZERO.

        * com.c (ffecom_expr_): Add assignp arg to support ASSIGN better.
        If assignp is TRUE, use different tree for FFEBLD_opSYMTER case.
        (ffecom_sym_transform_assign_): New function.
        (ffecom_expr_assign): New function.
        (ffecom_expr_assign_w): New function.

        * com.c (ffecom_f2c_make_type_): Do make_signed_type instead
        of make_unsigned_type throughout.

        * com.c (ffecom_finish_symbol_transform_): Expand scope of
        commented-out code to probably produce faster compiler code.

        * com.c (ffecom_gen_sfuncdef_): Push/pop calltemps so
        COMPLEX works right.
        Remove obsolete comment.

        * com.c (ffecom_start_progunit_): If non-multi alt-entry
        COMPLEX function, primary (static) entry point returns result
        directory, not via extra arg -- to agree with ffecom_return_expr
        and others.
        Pretransform all symbols so statement functions are defined
        before any code emitted.

        * com.c (ffecom_finish_progunit): Don't posttransform all
        symbols here -- pretransform them instead.

        * com.c (ffecom_init_0): Don't warn about possible ASSIGN
        crash, as this shouldn't happen now.

        * com.c (ffecom_push_tempvar): Fix to handle temp vars
        pushed while context is a statement (nested) function, and
        add appropriate commentary.

        * com.c (ffecom_return_expr): Check TREE_USED to determine
        where return value is unset.

        * com.h (struct _ffecom_symbol_): Add note about length_tree
        now being used to keep tree for ASSIGN version of symbol.

        * com.h (ffecom_expr_assign, ffecom_expr_assign_rw): New decls.
        (error): Add this prototype for back-end function.

        * fini.c (main): Grab input, output, and include names
        directly off the command line instead of making the latter
        two out of the first.

        * lex.c: Improve tab handling for both fixed and free source
        forms, and ignore carriage-returns on input, while generally
        improving the code.  ffelex_handle_tab_ has been renamed and
        reinvented as ffelex_image_char_, among other things.

        * malloc.c, malloc.h: Switch to valid ANSI C replacement for
        ARRAY_ZERO, and kill the full number of bytes in pools and
        areas.

        * proj.h.in (ARRAY_ZERO, ARRAY_ZERO_SIZE): Remove.

        * ste.c (ffeste_io_cilist_, ffeste_io_icilist_, ffeste_R838,
        ffeste_R839): Issue diagnostic if a too-narrow variable used in an
        ASSIGN context despite changes to this code and code in com.c.

        * where.c, where.h: Switch to valid ANSI C replacement for
        ARRAY_ZERO.

Fri Feb 17 03:35:19 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.8 released.

        * INSTALL: In quick-build case, list g77 target first so g77
        gets installed.  Also, explain that gcc gets built and installed
        as well, even though this isn't really what we want (and maybe
        we'll find a way around this someday).

Fri Feb 17 02:35:41 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.7 released.

        * Makefile.in (CONFIG_H, HCONFIG_H, TCONFIG_H, TM_H): Remove
        ../ prefix in front of .h files, since they're in the cd.

Fri Feb 17 01:50:48 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.6 released.

Thu Feb 16 20:26:54 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * ../README.g77: Remove description of g77 as "not-yet-published".

        * CREDITS: More changes.

        * Make-lang.in (G77STAGESTUFF): Remove cktyps stuff.

        * Makefile.in (CONFIG_H, HCONFIG_H, TCONFIG_H, TM_H): Don't
        prefix gcc dir with $(srcdir) since these don't live there,
        they are created in the build dir by gcc's configure.  Add
        a note explaining what these macros are about.
        Update dependencies via deps-kinda.

        * README.NEXTSTEP: Credit Toon, and per his request, add his
        email address.

        * com.h (FFECOM_DETERMINE_TYPES): #include "config.j".

        * config.j, convert.j, flags.j, hconfig.j, rtl.j, tconfig.j,
        tm.j, tree.j: Don't #include if already done.

        * convert.j: #include "tree.j" first, as convert.h clearly depends
        on trees being defined.

        * rtl.j: #include "config.j" first, since there's some stuff
        in rtl.h that assumes it has been #included.

        * tree.j: #include "config.j" first, or real.h makes inconsistent
        decision about return type of ereal_atof, leading to bugs, and
        because tree.h/real.h assume config.h already included.

Wed Feb 15 14:40:20 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.5 released.

        * Copyright notices updated to be FSF-style.

        * INSTALL: Some more clarification regarding building just f77.

        * Make-lang.in (F77_SRCS): Update wrt changing some .h to .j.
        (install-libf77): Fix typo in new parenthetical note.

        * Makefile.in (f/*.o): Update.
        (CONFIG_H, CONVERT_H, FLAGS_H, GLIMITS_H, HCONFIG_H, RTL_H,
        TCONFIG_H, TM_H, TREE_H): Update/new symbols.
        (deps-kinda): More fixes wrt changing some .h to .j.
        Document and explain this rule a bit better.
        Accommodate changes in output of gcc -MM.

        * *.h, *.c: Change #include's so proj.h not assumed to #include
        malloc.h or config.h (now config.j), and so new .j files are
        used instead of old .h ones.

        * com.c (ffecom_init_0): Use FLOAT_TYPE_SIZE for f2c's
        TYLONG/TYLOGICAL type codes, to get g77 working on Alpha.

        * com.h: Make all f2c-related integral types "int", not "long
        int".

        * config.j, convert.j, flags.j, glimits.j, hconfig.j, rtl.j,
        tconfig.j, tm.j, tree.j: New files wrapping around gbe
        .h files.

        * config.h, convert.h, flags.h, glimits.h, hconfig.h, rtl.h,
        tconfig.h, tm.h, tree.h: Deleted so new .j files
        can #include the gbe files directly, instead of using "../",
        and thus do better with various kinds of builds.

        * proj.h: Delete unused NO_STDDEF and related stuff.

Tue Feb 14 08:28:08 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * BUGS: Remove item #12, cross-compiling & autoconf scripts
        reportedly expected to work properly (according to d.love).

        * INSTALL: Add explanation of d.love's patch to config-lang.in.
        Add explanation of how to install just g77 when gcc already installed.
        Add note about usability of "-Wall".  Add note about bug-
        reporting.

        * Make-lang.in ($(srcdir)/f/conf-proj): Add comment about why
        conf-proj.out.
        (install-libf77): Echo parenthetical note to user about how to do
        just the (aborted) libf2c installation.
        (deps-kinda): Update to work with new configuration/build stuff.

        * bad.c (ffebad_finish): Put capitalized "warning:" &c message
        as prefix on any diagnostic without pointers into source.

        * bad.def (FFEBAD_TOO_BIG_INIT): Add this warning message.

        * config-lang.in: Add Dave Love's patch to catch case where
        back-end patches not applied and abort configuration.

        * data.c (ffedata_gather_, ffedata_value_): Warn when about
        to initialize a large aggregate area, due to design flaw resulting
        in too much time/space used to handle such cases.
        Use COMMON area name, and first notice of symbol, for multiple-
        initialization diagnostic, instead of member symbol and unknown
        location.
        (FFEDATA_sizeTOO_BIG_INIT_): New macro per above.

Mon Feb 13 13:54:26 1995  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in (F77_SRCS): Use $(srcdir)/f/proj.h.in, not
        $(srcdir)/f/proj.h for build outside srcdir.

Sun Feb 12 13:37:11 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * ../README.g77: Clarify procedures for unpacking, add asterisks
        to mark important things the user must do.

        * Fix dates in/add dates to ../README.g77, BUGS, CREDITS, DOC,
        INSTALL, PROJECTS, README.

Sun Feb 12 00:26:10 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.4 released.

        * Make-lang.in (f/proj.h): Reproduce this rule here from
        Makefile.in.
        ($(srcdir)/f/conf-proj): Put autoconf's stdout in temp file
        conf-proj.out, then mv to conf-proj only if successful, so
        conf-proj not touched if autoconf not installed.

        * Makefile.in ($(srcdir)/conf-proj): See Make-lang.in's similar
        rule.

Sat Feb 11 20:56:02 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * BUGS: Clarify some bugs.

        * DOC: Many improvements and fixes.

        * README: Move bulk of text, edited, to ../README.g77, and
        replace with pointer to that file.

        * com.c (ffecom_init_0): Comment out warning about sizeof(ftnlen)
        as per ste.c change.  Add text about ASSIGN to help user understand
        what is being warned about.

        * conf-proj.in: Fix typos in comments.

        * proj.h.in: Add ARRAY_ZERO_SIZE to parallel malloc.h's version,
        in case it proves to be needed.

        * ste.c: Comment out assertions requiring sizeof(ftnlen) >=
        sizeof(char *), in the hopes that overflow will never happen.
        (ffeste_R838): Change assertion to fatal() with at least
        partially helpful message.

Sat Feb 11 12:38:00 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * com.c (ffecom_vardesc_): Crash if typecode is -1.

        * ste.c (ffeste_io_dolio_): Crash if typecode is -1.

Sat Feb 11 09:51:57 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * ste.c: In I/O code tests for item arrayness, sort of revert
        to much earlier code that tests original exp, but also check
        in newer way just in case.  Newer way alone treated FOO(1:40)
        as an array, not sure why older way alone didn't work, but I
        think maybe it was when diagnosed code was involved, and
        since there are now checks for error_mark_node, maybe the old
        way alone would work.  But better to be safe; both original
        ffebld exp _and_ the transformed tree must indicate an array
        for the size-determination code to be used, else just 1/2 elements
        assumed.  And this text is for EMACS: (foo at bar).

Fri Feb 10 11:05:50 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * ste.c: In many cases, surround statement-expansion code
        with ffecom_push_calltemps () and ffecom_pop_calltemps ()
        so COMPLEX-returning functions can have temporaries pushed
        in "auto-pop" mode and have them auto-popped at the end of
        the statement.

Wed Feb  8 14:35:10 1995  Dave Love  <d.love@dl.ac.uk>

        * runtime/f2c.h.in (ftnlen, ftnint): Make same size as integer.

        * runtime/libI77/err.c (f_init): Thinko in MISSING_FILE_ELEMS
        conditional.
        * runtime/libI77/wrtfmt.c (mv_cur): Likewise.
        * runtime/libI77/wsfe.c (x_putc): Likewise.

        * runtime/libF77/signal_.c (signal_): Return 0 (this is a
        subroutine).

        * Makefile.in (f/proj.h): Depend on com.h.
        * Make-lang.in (include/f2c.h): Likewise (and proj.h).
        (install-libf77): Also install f2c.h.

        * runtime/libI77/Makefile.in (*.o): Add f2c.h dependency.
        * runtime/libF77/Makefile.in:  Likewise.

Wed Feb  8 13:56:47 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * stc.c (ffestc_R501_item): Don't reset kind/where to NONE when
        setting basictype/kindtype info for symbol, or especially
        its function/result twin, because kind/where might not be NONE.

Tue Feb  7 14:47:26 1995  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in (include/f2c.h:): Set shell variable src more
        robustly (independent of whether srcdir is relative or absolute).
        * Makefile.in (f/proj.h:): Likewise.

        * conf-proj.in: Check need for LAME_ASSERT.  Fix indentation in
        check for LAME_STDIO (cosmetic only with ANSI C).

        * com.h: Extra ...SIZE stuff taken from com.c.

        * com.c (FFECOM_DETERMINE_TYPES): Define before including com.h.
        (BITS_PER_WORD etc.) Remove and use conditional definitions to com.h.

        * runtime/configure.in: #define FFECOM_DETERMINE_TYPES for com.h in
        f2c type determination.

        * tm.h: Remove (at least pro tem) because of relative path and use
        top-level one.

        * Make-lang.in (include/f2c.h:): Set shell variable src more
        robustly (independent of whether srcdir is relative or absolute).
        * Makefile.in (f/proj.h:): Likewise.

Mon Feb  6 19:58:32 1995  Dave Love  <d.love@dl.ac.uk>

        * g77.c (append_arg): Use K&R declaration for, e.g. SunOS4 build.

Fri Feb  3 20:33:14 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * g77.c (main): Treat -l like filename in terms of -x handling.
        Rewrite arglist mechanism for ease of maintenance.
        Make sure every -lf2c is followed by -lm and vice versa.

        * Make-lang.in: Put complete list of sources in F77_SRCS def
        so changing a .h file, for example, causes rebuild.

        * Makefile.in: Change test for nextstep to m68k-next-nextstep* so
        all versions of nextstep on m68k get the necessary flag.

Fri Feb  3 19:10:32 1995  Dave Love  <d.love@dl.ac.uk>

        * INSTALL: Note about possible conflict with existing libf2c.a and
        f2c.h.

        * Make-lang.in (f77.distclean): Tidy and move deletion of
        f/config.cache to mostlyclean.
        (install-libf77): Test for $(libdir)/libf2c.* and barf if found
        unless F2CLIBOK defined.

        * runtime/Makefile.in (all): Change path to include directory (and
        elsewhere).
        (INCLUDES): Remove (unused/misleading).
        (distclean): Include f2c.h.
        (clean): Include config.cache.

        * runtime/libF77/Makefile.in (.SUFFIXES): Correct typo.
        (ALL_CFLAGS) Fix up include search path to find f2c.h in top level
        includes always.
        (all): Depend on f2c.h.
        * runtime/libI77/Makefile.in (.SUFFIXES): Likewise.

Thu Feb  2 17:17:06 1995  Dave Love  <d.love@dl.ac.uk>

        * INSTALL: Note about --srcdir and GNU make.

        * runtime/f2c.h.in (Pad_UDread, ALWAYS_FLUSH): Reomve the #defines
        per below.

        * runtime/configure.in (Pad_UDread, ALWAYS_FLUSH): Define these
        here, not in f2c.h as they'r eonly relevant for building.
        * runtime/configure: Regenerated.

        * config-lang.in: Warn about using GNU make outside source tree
        since I can't get Irix5 or SunOS4 makes to work in this case.

        * Makefile.in (VPATH): Don't set it here.
        (srcdir): Make it the normal `.' (overridden) at top level.
        (all.indirect): New dependency `dircheck'.
        (f771): Likewise
        (dircheck): New target for foolproofing.
        (f/proj.h:): Change finding source.
        (CONFIG_H): Don't use this as the relative path in the include loses
        f builddir != srcdir.

        * config.h: Remove per CONFIG_H change above.

        * Make-lang.in (F77_FLAGS_TO_PASS): Remove GCC_FOR_TARGET.
        (f771:): Pass VPATH, srcdir to sub-make.
        (f/Makefile:): New target.
        (stmp-int-hdrs): new variable for cheating build.
        (f77-runtime:): Alter GCC_FOR_TARGET treatment.
        (include/f2c.h f/runtime/Makefile:) Likewise.
        (f77-runtime-unsafe:): New (cheating) target.

Thu Feb  2 12:09:51 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * BUGS: Update regarding losing EQUIVALENCE members in -g, and
        regarding RS/6000 problems in the back end.

        * CREDITS: Make some changes as requested.

        * com.c (ffecom_member_trunk_): Remove unused static variable.
        (ffecom_finish_symbol_transform_): Improve comments.
        (ffecom_let_char_): Fix size of temp address-type var.
        (ffecom_member_phase2_): Try fixing problem fixed by change
        to ffecom_transform_equiv_ (f_m_p2_ function currently not used).
        (ffecom_transform_equiv_): Remove def of unused static variable.
        Comment-out use of ffecom_member_phase2_, until problems with
        back end fixed.
        (ffecom_push_tempvar): Fix assertion to not crash okay code.

        * com.h: Remove old, commented-out code.
        Add prototype for warning() in back end.

        * ste.c (ffeste_io_dofio_, ffeste_io_dolio_, ffeste_io_douio_,
        ffeste_io_icilist_): Check correct type of variable for arrayness.

Sun Jan 29 14:41:42 1995  Dave Love  <d.love@dl.ac.uk>

        * BUGS: Remove references to my configure bugs; add another.

        * runtime/Makefile.in (AR_FLAGS): Provide default value.

        * runtime/f2c.h.in (integer, logical): Take typedefs from
        F2C_INTEGER configuration parameter again.
        (NON_UNIX_STDIO): don't define it.

        * runtime/configure.in: Bring type checks for f2c.h in line with
        com.h.
        (MISSING_FILE_ELEMS): New variable to determine whether the relevant
        elements of the FILE struct exist, independent of NON_UNIX_STDIO.
        * runtime/libI77/{err,wrtfmt,wsfe}.c (MISSING_FILE_ELEMS): Use new
        parameter.

        * config-lang.in: Comment out more of f2c rules (c.f. Make-lang.in).
        (This stuff is relevant iff you gave configure --enable-f2c.)
        Create f/runtime directory tree iff not building in source
        directory.

        * Makefile.in (srcdir): Append slash so we get the right value when
        not building in the source directory.  This is a consequence of not
        building the `f' sources in `f'.
        (VPATH): Override configure's value for reasons above.
        (f/proj.h f/conf-proj): New rules to build proj.h by
        autoconfiguration.

        * proj.h: Rename to proj.h.in for autoconfiguration.
        * proj.h.in: New as above.
        * conf-proj conf-proj.in: New files for autoconfiguration.

        * Make-lang.in (include/f2c.h f/runtime/Makefile:): Change the order
        of setting the sh variables so that the right GCC_FOR_TARGET is
        used.
        (f77.*clean:) Add products of new configuration files and make sure
        all the *clean targets do something (unlike the ones in
        cp/Make-lange.in).

        * com.h (FFECOM_f2cINTEGER, FFECOM_f2cLOGICAL): Define as long or
        int appropriately to ensure sizeof(real) == sizeof(integer).

        * PROJECTS: Library section.

        * runtime/libI77/endfile.c: Don't #include sys/types.h conditional
        on NON_UNIX_STDIO since rawio.h needs size_t.
        * runtime/libI77/uio.c: #include <sys/types.h> for size_t if not
        KR_headers.

Wed Jan 25 03:31:51 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.3 released.

        * INSTALL: Revise.

        * Make-lang.in: Comment out rules for building f2c itself (f/f2c/).

        * README: Revise.

        * com.c (ffecom_init_0): Warn if ftnlen or INTEGER not big enough
        to hold a char *.

        * gbe/2.6.2.diff: Update.

Mon Jan 23 17:10:49 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * TODO: Remove.
        BUGS: New file.
        PROJECTS: New file.
        CREDITS: New file.

        * cktyps*: Remove.
        Make-lang.in: Remove cktyps stuff.
        Makefile.in: Remove cktyps stuff.

        * DOC: Add info on changes for 0.5.3.

        * bad.c: Put "warning:" &c on diagnostic messages.
        Don't output informational messages if warnings disabled.

Thu Jan 19 12:38:13 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * g77.c: Avoid putting out useless "-xnone -xf77" pairs so
        larger command lines can be accommodated.
        Recognize both `-xlang' and `-x lang'.
        Recognize `-xnone' and `-x none' to mean what it does, instead
        of treating "none" as any other language.
        Some minor, slight improvements in the way args are handled
        (hopefully for clearer, more maintainable code), including
        consistency checks on arg count just in case.

Wed Jan 18 16:41:57 1995  Craig Burley  (burley@gnu.ai.mit.edu)

        * DOC: Explain -fautomatic better.

        * INSTALL: Describe libf2c.a better.

        * Make-lang.in, Makefile.in: Build f771 &c with gcc/ as cd instead
        of gcc/f/ so debugging info is better (source file tracking).
        Add new source file type.c.

        * Makefile.in: For nextstep3, link f771 with -segaddr __DATA
        6000000.  Fix typo.  Change deps-kinda target to handle building
        from gcc/.  Update dependencies.

        * bld-op.def, bld.h, bld.c: Remove opBACKEND and all related
        stuff.
        Remove consistency tests that cause compiler warnings.

        * cktyps.c: Remove all typing checking.

        * com-rt.def: Change all rttypeFLOAT_ intrinsics to rttypeDOUBLE_,
        to precisely match how they're declared in libf2c.

        * com.h, com.c: Revise to more elegantly track related stuff
        in the version of f2c.h used to build libf2c.

        * com.c: Increase FFECOM_sizeMAXSTACKITEM, and if 0 or undefined
        when checked to determine where to put entity, treat as infinite.
        Rewrite temporary mechanism to be based on trees instead of
        ffeinfo stuff, and make it much simpler.  Change interface
        accordingly.
        Fixes to better track types of things, make appropriate
        conversions, etc.  E.g. when making an arg for a libf2c
        function, make sure it's of the right type (such as ftnlen).
        Delete opBACKEND transformation code.
        (ffecom_init_0): Smoother initialization of types, especially
        paying attention to using consistent rules for making INTEGER,
        REAL, DOUBLE PRECISION, etc., and for deciding their "*N"
        and kind values that will work across all g77 platforms.
        No longer require per-target configuration info in target.h
        or config/*/*; use new type module to store size, alignment.
        (ffecom_member_phase2): Declare COMMON/EQUIVALENCE group members
        so debugger sees them.
        (ffecom_finish_progunit): Transform all symbols in program unit,
        so -g will show they all exist.

        * expr.c (ffeexpr_collapse_substr): Handle strange substring
        range values.

        * info.h, info.c: Provide connection to new type module.
        Remove tests that yield compiler warnings.

        * intrin.c (ffeintrin_is_intrinsic): Properly handle deleted
        intrinsic.

        * lex.c (ffelex_file_fixed): Remove redundant/buggy code.

        * stc.c (ffestc_kindtype_kind_, ffestc_kindtype_star_): Replace
        boring switch stmt with simple call to new type module.  This
        sort of thing is a reason to get up in the morning.

        * ste.c: Update to handle new interface for
        ffecom_push/pop_tempvar.
        Fixes to better track types of things.
        Fixes to not crash for certain diagnosed constructs.
        (ffeste_begin_iterdo_): Check only constants for overflow to avoid
        spurious diagnostics.
        Don't convert larger integer (say, INTEGER*8) to canonical integer
        for iteration count.

        * stw.h: Track DO iteration count temporary variable.

        * symbol.c: Remove consistency tests that cause compiler warnings.

        * target.c (ffetarget_aggregate_info): Replace big switch with
        little call to new type module.
        (ffetarget_layout): Remove consistency tests that cause
        compiler warnings.
        (ffetarget_convert_character1_typeless): Pick up length of
        typeless type from new type module.

        * target.h: Crash build if target float bit pattern cannot be
        precisely determined.
        Remove all the type cruft now determined by ffecom_init_0
        at invocation time and maintained in new type module.
        Put casts on second arg of all REAL_VALUE_TO_TARGET_DOUBLE
        uses so compiler warnings avoided (requires target float bit
        pattern to be precisely determined, hence code to crash build).

        * top.c: Add inits/terminates for new type module.

        * type.h, type.c: New module.

        * gbe/2.6.2.diff: Remove all patches to files in gcc/config/
        directory and its subdirectories.

Mon Jan  9 19:23:25 1995  Dave Love  <d.love@dl.ac.uk>

        * com.h (FFECOM_F2C_INTEGER_TYPE_NODE): Define and use instead of
        long_integer_type_node where appropriate.

Tue Jan  3 14:56:18 1995  Dave Love  <d.love@dl.ac.uk>

        * com.h: Make ffecom_f2c_logical_type_node long, consistent with
        integer.

Fri Dec  2 20:07:37 1994  Dave Love  <d.love@dl.ac.uk>

        * config-lang.in (stagestuff): Add f2c conditionally.
        * Make-lang.in: Add f2c and related targets.
        * f2c: Add the directory.

Fri Nov 25 22:17:26 1994  Dave Love  <d.love@dl.ac.uk>

        * Makefile.in (FLAGS_TO_PASS): pass $(CROSS)
        * Make-lang.in: more changes to runtime targets

Thu Nov 24 18:03:21 1994  Dave Love  <d.love@dl.ac.uk>

        * Makefile.in (FLAGS_TO_PASS): define for sub-makes

        * g77.c (main): change f77-cpp-output to f77-cpp-input (.F files)

Wed Nov 23 15:22:53 1994  Dave Love  <d.love@dl.ac.uk>

        * bad.c (ffebad_finish): kluge to fool emacs19 into finding errors:
        add trailing space to <file>:<line>:

Tue Nov 22 11:30:50 1994  Dave Love  <d.love@dl.ac.uk>

        * runtime/libF77/signal_.c (RETSIGTYPE): added

Mon Nov 21 13:04:13 1994  Dave Love  <d.love@dl.ac.uk>

        * Makefile.in (compiler): add runtime

        * config-lang.in (stagestuff): add libf2c.a to stagestuff

        * Make-lang.in:
        G77STAGESTUFF <- MORESTAGESTUFF
        f77-runtime: new target, plus supporting ones

        * runtime: add the directory, containing libI77, libF77 and autoconf
        stuff

        * g++.1: remove

        * g77.1: minor fixes

Thu Nov 17 15:18:05 1994  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.2 released.

        * bad.def: Modify wording of FFEBAD_UNIMPL_STMT to indicate
        that it covers a wide array of possible problems (that, someday,
        should be handled via separate diagnostics).

        * lex.c: Allow $ in identifiers if -fdollar-ok.
        * top.c: Support -fdollar-ok.
        * top.h: Support -fdollar-ok.
        * target.h: Support -fdollar-ok.
        * DOC: Describe -fdollar-ok.

        * std.c (ffestd_R1229_finish): Fix bug so stand-alone build works.
        * ste.c (ffeste_R819A): Fix bug so stand-alone build works.

        * Make: Improvements for stand-alone build.

        * Makefile.in: Fix copyright text at top of file.

        * LINK, SRCS, UNLINK: Removed.  Not particularly useful now that
        g77 sources live in their own subdirectory.

        * g77.c (main): Cast arg to bzero to avoid warning.  (This is
        identical to Kenner's fix to cp/g++.c.)

        * gbe/: New subdirectory, to contain .diff files for various
        versions of the GNU CC back end.

        * gbe/README: New file.
        * gbe/2.6.2.diff: New file.

Tue Nov  8 10:23:10 1994  Dave Love  <d.love@dl.ac.uk>

        * Make-lang.in: don't install as f77 as well as g77 to avoid
        confusion with system's compiler (especially while testing)

        * g77.c (main): use -lf2c and -lm; fix sense of test for .f/.F files

Fri Oct 28 09:45:00 1994  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.1 released.

        * gcc.c: Invoke f771 instead of f-771.

Fri Oct 28 02:00:44 1994  Craig Burley  (burley@gnu.ai.mit.edu)

        * Version 0.5.0 released.

Fri Oct 14 15:03:35 1994  Craig Burley  (burley@gnu.ai.mit.edu)

        * Makefile.in: Handle the Fortran-77 front-end in a subdirectory.
        * f-*: Move Fortran-77 front-end to f/*.