PR c/81544 - attribute noreturn and warn_unused_result on the same function accepted
commitdab0e385e3d445022e5be724290b00a384bc4bff
authormsebor <msebor@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 7 Dec 2017 16:32:03 +0000 (7 16:32 +0000)
committermsebor <msebor@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 7 Dec 2017 16:32:03 +0000 (7 16:32 +0000)
treea586e44e1f5c41fd8ae4cb8fd80446c763cc595d
parent865ea74800b9099f5eead817cc8fcfff005c43c5
PR c/81544 - attribute noreturn and warn_unused_result on the same function accepted
PR c/81566 - invalid attribute aligned accepted on functions

gcc/ada/ChangeLog:

PR c/81544
* gcc-interface/utils.c (gnat_internal_attribute_table): Initialize
new member of struct attribute_spec.

gcc/c/ChangeLog:

PR c/81544
* c-decl.c (c_decl_attributes): Look up existing declaration and
pass it to decl_attributes.

gcc/c-family/ChangeLog:

PR c/81544
PR c/81566
* c-attribs.c (attr_aligned_exclusions): New array.
(attr_alloc_exclusions, attr_cold_hot_exclusions): Same.
(attr_common_exclusions, attr_const_pure_exclusions): Same.
(attr_gnu_inline_exclusions, attr_inline_exclusions): Same.
(attr_noreturn_exclusions, attr_returns_twice_exclusions): Same.
(attr_warn_unused_result_exclusions): Same.
(handle_hot_attribute, handle_cold_attribute): Simplify.
(handle_const_attribute): Warn on function returning void.
(handle_pure_attribute): Same.
(handle_aligned_attribute): Diagnose conflicting attribute
specifications.
* c-warn.c (diagnose_mismatched_attributes): Simplify.

gcc/cp/ChangeLog:

PR c/81544
* cp-tree.h (decls_match): Add default argument.
* decl.c (decls_match): Avoid calling into the target back end
and triggering an error.
* decl2.c (cplus_decl_attributes): Look up existing declaration and
pass it to decl_attributes.
* tree.c (cxx_attribute_table): Initialize new member of struct
attribute_spec.

gcc/fortran/ChangeLog:

PR c/81544
* f95-lang.c (gfc_attribute_table): Initialize new member of struct
attribute_spec.

gcc/lto/ChangeLog:

PR c/81544
* lto-lang.c (lto_attribute_table): Initialize new member of struct
attribute_spec.

gcc/ChangeLog:

PR c/81544
* attribs.c (empty_attribute_table): Initialize new member of
struct attribute_spec.
(decl_attributes): Add argument.  Handle mutually exclusive
combinations of attributes.
(selftests::test_attribute_exclusions): New function.
(selftests::attribute_c_tests): Ditto.
* attribs.h (decl_attributes): Add default argument.
* selftest.h (attribute_c_tests): Declare.
* selftest-run-tests.c (selftest::run_tests): Call attribute_c_tests.
* tree-core.h (attribute_spec::exclusions, exclude): New type and
member.
* doc/extend.texi (Common Function Attributes): Update const and pure.

gcc/testsuite/ChangeLog:

PR c/81544
* c-c++-common/Wattributes-2.c: New test.
* c-c++-common/Wattributes.c: New test.
* c-c++-common/attributes-3.c: Adjust.
* gcc.dg/Wattributes-6.c: New test.
* gcc.dg/Wattributes-7.c: New test.
* gcc.dg/attr-noinline.c
* gcc.dg/pr44964.c: Same.
* gcc.dg/torture/pr42363.c: Same.
* gcc.dg/tree-ssa/ssa-ccp-2.c: Same.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@255469 138bc75d-0d04-0410-961f-82ee72b054a4
62 files changed:
gcc/ChangeLog
gcc/ada/ChangeLog
gcc/ada/gcc-interface/utils.c
gcc/attribs.c
gcc/attribs.h
gcc/brig/brig-lang.c
gcc/c-family/ChangeLog
gcc/c-family/c-attribs.c
gcc/c-family/c-warn.c
gcc/c/ChangeLog
gcc/c/c-decl.c
gcc/config/alpha/alpha.c
gcc/config/arc/arc.c
gcc/config/arm/arm.c
gcc/config/avr/avr.c
gcc/config/bfin/bfin.c
gcc/config/cr16/cr16.c
gcc/config/epiphany/epiphany.c
gcc/config/h8300/h8300.c
gcc/config/i386/i386.c
gcc/config/ia64/ia64.c
gcc/config/m32c/m32c.c
gcc/config/m32r/m32r.c
gcc/config/m68k/m68k.c
gcc/config/mcore/mcore.c
gcc/config/microblaze/microblaze.c
gcc/config/mips/mips.c
gcc/config/msp430/msp430.c
gcc/config/nds32/nds32.c
gcc/config/nvptx/nvptx.c
gcc/config/powerpcspe/powerpcspe.c
gcc/config/rl78/rl78.c
gcc/config/rs6000/rs6000.c
gcc/config/rx/rx.c
gcc/config/s390/s390.c
gcc/config/sh/sh.c
gcc/config/sparc/sparc.c
gcc/config/spu/spu.c
gcc/config/stormy16/stormy16.c
gcc/config/v850/v850.c
gcc/config/visium/visium.c
gcc/cp/ChangeLog
gcc/cp/cp-tree.h
gcc/cp/decl.c
gcc/cp/decl2.c
gcc/cp/tree.c
gcc/doc/extend.texi
gcc/fortran/ChangeLog
gcc/fortran/f95-lang.c
gcc/lto/ChangeLog
gcc/lto/lto-lang.c
gcc/selftest-run-tests.c
gcc/selftest.h
gcc/testsuite/ChangeLog
gcc/testsuite/c-c++-common/attributes-3.c
gcc/testsuite/gcc.dg/attr-noinline.c
gcc/testsuite/gcc.dg/pr44964.c
gcc/testsuite/gcc.dg/torture/pr42363.c
gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-2.c
gcc/tree-core.h
libstdc++-v3/ChangeLog
libstdc++-v3/include/ext/mt_allocator.h