gcc/cpphash.h

   1 /* Part of CPP library.
   2    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
   3    Free Software Foundation, Inc.
   4
   5 This program is free software; you can redistribute it and/or modify it
   6 under the terms of the GNU General Public License as published by the
   7 Free Software Foundation; either version 2, or (at your option) any
   8 later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 /* This header defines all the internal data structures and functions
  20    that need to be visible across files.  It's called cpphash.h for
  21    historical reasons.  */
  22
  23 #ifndef GCC_CPPHASH_H
  24 #define GCC_CPPHASH_H
  25
  26 #include "hashtable.h"
  27
  28 #if defined HAVE_ICONV_H && defined HAVE_ICONV
  29 #include <iconv.h>
  30 #else
  31 #define HAVE_ICONV 0
  32 typedef int iconv_t;  /* dummy */
  33 #endif
  34
  35 struct directive;               /* Deliberately incomplete.  */
  36 struct pending_option;
  37 struct op;
  38 struct _cpp_strbuf;
  39
  40 typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t,
  41                            struct _cpp_strbuf *);
  42 struct cset_converter
  43 {
  44   convert_f func;
  45   iconv_t cd;
  46 };
  47
  48 #ifndef HAVE_UCHAR
  49 typedef unsigned char uchar;
  50 #endif
  51 #define U (const uchar *)  /* Intended use: U"string" */
  52
  53 #define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t))
  54
  55 /* Test if a sign is valid within a preprocessing number.  */
  56 #define VALID_SIGN(c, prevc) \
  57   (((c) == '+' || (c) == '-') && \
  58    ((prevc) == 'e' || (prevc) == 'E' \
  59     || (((prevc) == 'p' || (prevc) == 'P') \
  60         && CPP_OPTION (pfile, extended_numbers))))
  61
  62 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
  63 #define CPP_BUFFER(PFILE) ((PFILE)->buffer)
  64 #define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base)
  65 #define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
  66
  67 /* Maximum nesting of cpp_buffers.  We use a static limit, partly for
  68    efficiency, and partly to limit runaway recursion.  */
  69 #define CPP_STACK_MAX 200
  70
  71 /* Host alignment handling.  */
  72 struct dummy
  73 {
  74   char c;
  75   union
  76   {
  77     double d;
  78     int *p;
  79   } u;
  80 };
  81
  82 #define DEFAULT_ALIGNMENT offsetof (struct dummy, u)
  83 #define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
  84 #define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT)
  85
  86 /* Each macro definition is recorded in a cpp_macro structure.
  87    Variadic macros cannot occur with traditional cpp.  */
  88 struct cpp_macro
  89 {
  90   /* Parameters, if any.  */
  91   cpp_hashnode **params;
  92
  93   /* Replacement tokens (ISO) or replacement text (traditional).  See
  94      comment at top of cpptrad.c for how traditional function-like
  95      macros are encoded.  */
  96   union
  97   {
  98     cpp_token *tokens;
  99     const uchar *text;
 100   } exp;
 101
 102   /* Definition line number.  */
 103   fileline line;
 104
 105   /* Number of tokens in expansion, or bytes for traditional macros.  */
 106   unsigned int count;
 107
 108   /* Number of parameters.  */
 109   unsigned short paramc;
 110
 111   /* If a function-like macro.  */
 112   unsigned int fun_like : 1;
 113
 114   /* If a variadic macro.  */
 115   unsigned int variadic : 1;
 116
 117   /* If macro defined in system header.  */
 118   unsigned int syshdr   : 1;
 119
 120   /* Nonzero if it has been expanded or had its existence tested.  */
 121   unsigned int used     : 1;
 122 };
 123
 124 #define _cpp_mark_macro_used(NODE) do {                                 \
 125   if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN))      \
 126     (NODE)->value.macro->used = 1; } while (0)
 127
 128 /* A generic memory buffer, and operations on it.  */
 129 typedef struct _cpp_buff _cpp_buff;
 130 struct _cpp_buff
 131 {
 132   struct _cpp_buff *next;
 133   unsigned char *base, *cur, *limit;
 134 };
 135
 136 extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t);
 137 extern void _cpp_release_buff (cpp_reader *, _cpp_buff *);
 138 extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t);
 139 extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t);
 140 extern void _cpp_free_buff (_cpp_buff *);
 141 extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t);
 142 extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t);
 143
 144 #define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur)
 145 #define BUFF_FRONT(BUFF) ((BUFF)->cur)
 146 #define BUFF_LIMIT(BUFF) ((BUFF)->limit)
 147
 148 /* #include types.  */
 149 enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
 150
 151 union utoken
 152 {
 153   const cpp_token *token;
 154   const cpp_token **ptoken;
 155 };
 156
 157 /* A "run" of tokens; part of a chain of runs.  */
 158 typedef struct tokenrun tokenrun;
 159 struct tokenrun
 160 {
 161   tokenrun *next, *prev;
 162   cpp_token *base, *limit;
 163 };
 164
 165 /* Accessor macros for struct cpp_context.  */
 166 #define FIRST(c) ((c)->u.iso.first)
 167 #define LAST(c) ((c)->u.iso.last)
 168 #define CUR(c) ((c)->u.trad.cur)
 169 #define RLIMIT(c) ((c)->u.trad.rlimit)
 170
 171 typedef struct cpp_context cpp_context;
 172 struct cpp_context
 173 {
 174   /* Doubly-linked list.  */
 175   cpp_context *next, *prev;
 176
 177   union
 178   {
 179     /* For ISO macro expansion.  Contexts other than the base context
 180        are contiguous tokens.  e.g. macro expansions, expanded
 181        argument tokens.  */
 182     struct
 183     {
 184       union utoken first;
 185       union utoken last;
 186     } iso;
 187
 188     /* For traditional macro expansion.  */
 189     struct
 190     {
 191       const uchar *cur;
 192       const uchar *rlimit;
 193     } trad;
 194   } u;
 195
 196   /* If non-NULL, a buffer used for storage related to this context.
 197      When the context is popped, the buffer is released.  */
 198   _cpp_buff *buff;
 199
 200   /* For a macro context, the macro node, otherwise NULL.  */
 201   cpp_hashnode *macro;
 202
 203   /* True if utoken element is token, else ptoken.  */
 204   bool direct_p;
 205 };
 206
 207 struct lexer_state
 208 {
 209   /* Nonzero if first token on line is CPP_HASH.  */
 210   unsigned char in_directive;
 211
 212   /* Nonzero if in a directive that will handle padding tokens itself.
 213      #include needs this to avoid problems with computed include and
 214      spacing between tokens.  */
 215   unsigned char directive_wants_padding;
 216
 217   /* True if we are skipping a failed conditional group.  */
 218   unsigned char skipping;
 219
 220   /* Nonzero if in a directive that takes angle-bracketed headers.  */
 221   unsigned char angled_headers;
 222
 223   /* Nonzero if in a #if or #elif directive.  */
 224   unsigned char in_expression;
 225
 226   /* Nonzero to save comments.  Turned off if discard_comments, and in
 227      all directives apart from #define.  */
 228   unsigned char save_comments;
 229
 230   /* Nonzero if lexing __VA_ARGS__ is valid.  */
 231   unsigned char va_args_ok;
 232
 233   /* Nonzero if lexing poisoned identifiers is valid.  */
 234   unsigned char poisoned_ok;
 235
 236   /* Nonzero to prevent macro expansion.  */
 237   unsigned char prevent_expansion;
 238
 239   /* Nonzero when parsing arguments to a function-like macro.  */
 240   unsigned char parsing_args;
 241
 242   /* Nonzero to skip evaluating part of an expression.  */
 243   unsigned int skip_eval;
 244 };
 245
 246 /* Special nodes - identifiers with predefined significance.  */
 247 struct spec_nodes
 248 {
 249   cpp_hashnode *n_defined;              /* defined operator */
 250   cpp_hashnode *n_true;                 /* C++ keyword true */
 251   cpp_hashnode *n_false;                /* C++ keyword false */
 252   cpp_hashnode *n__VA_ARGS__;           /* C99 vararg macros */
 253 };
 254
 255 typedef struct _cpp_line_note _cpp_line_note;
 256 struct _cpp_line_note
 257 {
 258   /* Location in the clean line the note refers to.  */
 259   const uchar *pos;
 260
 261   /* Type of note.  The 9 'from' trigraph characters represent those
 262      trigraphs, '\\' an escaped newline, ' ' an escaped newline with
 263      intervening space, and anything else is invalid.  */
 264   unsigned int type;
 265 };
 266
 267 /* Represents the contents of a file cpplib has read in.  */
 268 struct cpp_buffer
 269 {
 270   const uchar *cur;             /* Current location.  */
 271   const uchar *line_base;       /* Start of current physical line.  */
 272   const uchar *next_line;       /* Start of to-be-cleaned logical line.  */
 273
 274   const uchar *buf;             /* Entire character buffer.  */
 275   const uchar *rlimit;          /* Writable byte at end of file.  */
 276
 277   _cpp_line_note *notes;        /* Array of notes.  */
 278   unsigned int cur_note;        /* Next note to process.  */
 279   unsigned int notes_used;      /* Number of notes.  */
 280   unsigned int notes_cap;       /* Size of allocated array.  */
 281
 282   struct cpp_buffer *prev;
 283
 284   /* Pointer into the file table; non-NULL if this is a file buffer.
 285      Used for include_next and to record control macros.  */
 286   struct _cpp_file *file;
 287
 288   /* Value of if_stack at start of this file.
 289      Used to prohibit unmatched #endif (etc) in an include file.  */
 290   struct if_stack *if_stack;
 291
 292   /* True if we need to get the next clean line.  */
 293   bool need_line;
 294
 295   /* True if we have already warned about C++ comments in this file.
 296      The warning happens only for C89 extended mode with -pedantic on,
 297      or for -Wtraditional, and only once per file (otherwise it would
 298      be far too noisy).  */
 299   unsigned char warned_cplusplus_comments;
 300
 301   /* True if we don't process trigraphs and escaped newlines.  True
 302      for preprocessed input, command line directives, and _Pragma
 303      buffers.  */
 304   unsigned char from_stage3;
 305
 306   /* At EOF, a buffer is automatically popped.  If RETURN_AT_EOF is
 307      true, a CPP_EOF token is then returned.  Otherwise, the next
 308      token from the enclosing buffer is returned.  */
 309   unsigned int return_at_eof : 1;
 310
 311   /* The directory of the this buffer's file.  Its NAME member is not
 312      allocated, so we don't need to worry about freeing it.  */
 313   struct cpp_dir dir;
 314
 315   /* Used for buffer overlays by cpptrad.c.  */
 316   const uchar *saved_cur, *saved_rlimit;
 317 };
 318
 319 /* A cpp_reader encapsulates the "state" of a pre-processor run.
 320    Applying cpp_get_token repeatedly yields a stream of pre-processor
 321    tokens.  Usually, there is only one cpp_reader object active.  */
 322 struct cpp_reader
 323 {
 324   /* Top of buffer stack.  */
 325   cpp_buffer *buffer;
 326
 327   /* Overlaid buffer (can be different after processing #include).  */
 328   cpp_buffer *overlaid_buffer;
 329
 330   /* Lexer state.  */
 331   struct lexer_state state;
 332
 333   /* Source line tracking.  */
 334   struct line_maps line_maps;
 335   const struct line_map *map;
 336   fileline line;
 337
 338   /* The line of the '#' of the current directive.  */
 339   fileline directive_line;
 340
 341   /* Memory buffers.  */
 342   _cpp_buff *a_buff;            /* Aligned permanent storage.  */
 343   _cpp_buff *u_buff;            /* Unaligned permanent storage.  */
 344   _cpp_buff *free_buffs;        /* Free buffer chain.  */
 345
 346   /* Context stack.  */
 347   struct cpp_context base_context;
 348   struct cpp_context *context;
 349
 350   /* If in_directive, the directive if known.  */
 351   const struct directive *directive;
 352
 353   /* Search paths for include files.  */
 354   struct cpp_dir *quote_include;        /* "" */
 355   struct cpp_dir *bracket_include;      /* <> */
 356   struct cpp_dir no_search_path;        /* No path.  */
 357
 358   /* Chain of all hashed _cpp_file instances.  */
 359   struct _cpp_file *all_files;
 360
 361   struct _cpp_file *main_file;
 362
 363   /* File and directory hash table.  */
 364   struct htab *file_hash;
 365   struct file_hash_entry *file_hash_entries;
 366   unsigned int file_hash_entries_allocated, file_hash_entries_used;
 367
 368   /* Nonzero means don't look for #include "foo" the source-file
 369      directory.  */
 370   bool quote_ignores_source_dir;
 371
 372   /* Nonzero if any file has contained #pragma once or #import has
 373      been used.  */
 374   bool seen_once_only;
 375
 376   /* Multiple include optimization.  */
 377   const cpp_hashnode *mi_cmacro;
 378   const cpp_hashnode *mi_ind_cmacro;
 379   bool mi_valid;
 380
 381   /* Lexing.  */
 382   cpp_token *cur_token;
 383   tokenrun base_run, *cur_run;
 384   unsigned int lookaheads;
 385
 386   /* Nonzero prevents the lexer from re-using the token runs.  */
 387   unsigned int keep_tokens;
 388
 389   /* Error counter for exit code.  */
 390   unsigned int errors;
 391
 392   /* Buffer to hold macro definition string.  */
 393   unsigned char *macro_buffer;
 394   unsigned int macro_buffer_len;
 395
 396   /* Descriptor for converting from the source character set to the
 397      execution character set.  */
 398   struct cset_converter narrow_cset_desc;
 399
 400   /* Descriptor for converting from the source character set to the
 401      wide execution character set.  */
 402   struct cset_converter wide_cset_desc;
 403
 404   /* Date and time text.  Calculated together if either is requested.  */
 405   const uchar *date;
 406   const uchar *time;
 407
 408   /* EOF token, and a token forcing paste avoidance.  */
 409   cpp_token avoid_paste;
 410   cpp_token eof;
 411
 412   /* Opaque handle to the dependencies of mkdeps.c.  */
 413   struct deps *deps;
 414
 415   /* Obstack holding all macro hash nodes.  This never shrinks.
 416      See cpphash.c */
 417   struct obstack hash_ob;
 418
 419   /* Obstack holding buffer and conditional structures.  This is a
 420      real stack.  See cpplib.c.  */
 421   struct obstack buffer_ob;
 422
 423   /* Pragma table - dynamic, because a library user can add to the
 424      list of recognized pragmas.  */
 425   struct pragma_entry *pragmas;
 426
 427   /* Call backs to cpplib client.  */
 428   struct cpp_callbacks cb;
 429
 430   /* Identifier hash table.  */
 431   struct ht *hash_table;
 432
 433   /* Expression parser stack.  */
 434   struct op *op_stack, *op_limit;
 435
 436   /* User visible options.  */
 437   struct cpp_options opts;
 438
 439   /* Special nodes - identifiers with predefined significance to the
 440      preprocessor.  */
 441   struct spec_nodes spec_nodes;
 442
 443   /* Whether cpplib owns the hashtable.  */
 444   bool our_hashtable;
 445
 446   /* Traditional preprocessing output buffer (a logical line).  */
 447   struct
 448   {
 449     uchar *base;
 450     uchar *limit;
 451     uchar *cur;
 452     fileline first_line;
 453   } out;
 454
 455   /* Used to save the original line number during traditional
 456      preprocessing.  */
 457   unsigned int saved_line;
 458
 459   /* A saved list of the defined macros, for dependency checking
 460      of precompiled headers.  */
 461   struct cpp_savedstate *savedstate;
 462 };
 463
 464 /* Character classes.  Based on the more primitive macros in safe-ctype.h.
 465    If the definition of `numchar' looks odd to you, please look up the
 466    definition of a pp-number in the C standard [section 6.4.8 of C99].
 467
 468    In the unlikely event that characters other than \r and \n enter
 469    the set is_vspace, the macro handle_newline() in cpplex.c must be
 470    updated.  */
 471 #define _dollar_ok(x)   ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident))
 472
 473 #define is_idchar(x)    (ISIDNUM(x) || _dollar_ok(x))
 474 #define is_numchar(x)   ISIDNUM(x)
 475 #define is_idstart(x)   (ISIDST(x) || _dollar_ok(x))
 476 #define is_numstart(x)  ISDIGIT(x)
 477 #define is_hspace(x)    ISBLANK(x)
 478 #define is_vspace(x)    IS_VSPACE(x)
 479 #define is_nvspace(x)   IS_NVSPACE(x)
 480 #define is_space(x)     IS_SPACE_OR_NUL(x)
 481
 482 /* This table is constant if it can be initialized at compile time,
 483    which is the case if cpp was compiled with GCC >=2.7, or another
 484    compiler that supports C99.  */
 485 #if HAVE_DESIGNATED_INITIALIZERS
 486 extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
 487 #else
 488 extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
 489 #endif
 490
 491 /* Macros.  */
 492
 493 #define CPP_IN_SYSTEM_HEADER(PFILE) ((PFILE)->map && (PFILE)->map->sysp)
 494 #define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic)
 495 #define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional)
 496
 497 /* In cpperror.c  */
 498 extern int _cpp_begin_message (cpp_reader *, int, fileline, unsigned int);
 499
 500 /* In cppmacro.c */
 501 extern void _cpp_free_definition (cpp_hashnode *);
 502 extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *);
 503 extern void _cpp_pop_context (cpp_reader *);
 504 extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *,
 505                                     const uchar *, size_t);
 506 extern bool _cpp_save_parameter (cpp_reader *, cpp_macro *, cpp_hashnode *);
 507 extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *,
 508                                unsigned int);
 509 extern const uchar *_cpp_builtin_macro_text (cpp_reader *, cpp_hashnode *);
 510 int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *);
 511 /* In cpphash.c */
 512 extern void _cpp_init_hashtable (cpp_reader *, hash_table *);
 513 extern void _cpp_destroy_hashtable (cpp_reader *);
 514
 515 /* In cppfiles.c */
 516 typedef struct _cpp_file _cpp_file;
 517 extern _cpp_file *_cpp_find_file (cpp_reader *, const char *fname,
 518                                   cpp_dir *start_dir, bool fake);
 519 extern bool _cpp_find_failed (_cpp_file *);
 520 extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *);
 521 extern void _cpp_fake_include (cpp_reader *, const char *);
 522 extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, bool);
 523 extern bool _cpp_stack_include (cpp_reader *, const char *, int,
 524                                 enum include_type);
 525 extern int _cpp_compare_file_date (cpp_reader *, const char *, int);
 526 extern void _cpp_report_missing_guards (cpp_reader *);
 527 extern void _cpp_init_files (cpp_reader *);
 528 extern void _cpp_cleanup_files (cpp_reader *);
 529 extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *);
 530
 531 /* In cppexp.c */
 532 extern bool _cpp_parse_expr (cpp_reader *);
 533 extern struct op *_cpp_expand_op_stack (cpp_reader *);
 534
 535 /* In cpplex.c */
 536 extern void _cpp_process_line_notes (cpp_reader *, int);
 537 extern void _cpp_clean_line (cpp_reader *);
 538 extern bool _cpp_get_fresh_line (cpp_reader *);
 539 extern bool _cpp_skip_block_comment (cpp_reader *);
 540 extern cpp_token *_cpp_temp_token (cpp_reader *);
 541 extern const cpp_token *_cpp_lex_token (cpp_reader *);
 542 extern cpp_token *_cpp_lex_direct (cpp_reader *);
 543 extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *);
 544 extern void _cpp_init_tokenrun (tokenrun *, unsigned int);
 545
 546 /* In cppinit.c.  */
 547 extern void _cpp_maybe_push_include_file (cpp_reader *);
 548
 549 /* In cpplib.c */
 550 extern int _cpp_test_assertion (cpp_reader *, unsigned int *);
 551 extern int _cpp_handle_directive (cpp_reader *, int);
 552 extern void _cpp_define_builtin (cpp_reader *, const char *);
 553 extern char ** _cpp_save_pragma_names (cpp_reader *);
 554 extern void _cpp_restore_pragma_names (cpp_reader *, char **);
 555 extern void _cpp_do__Pragma (cpp_reader *);
 556 extern void _cpp_init_directives (cpp_reader *);
 557 extern void _cpp_init_internal_pragmas (cpp_reader *);
 558 extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *,
 559                                  unsigned int, unsigned int);
 560 extern void _cpp_pop_buffer (cpp_reader *);
 561
 562 /* In cpptrad.c.  */
 563 extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *);
 564 extern bool _cpp_read_logical_line_trad (cpp_reader *);
 565 extern void _cpp_overlay_buffer (cpp_reader *pfile, const uchar *, size_t);
 566 extern void _cpp_remove_overlay (cpp_reader *);
 567 extern bool _cpp_create_trad_definition (cpp_reader *, cpp_macro *);
 568 extern bool _cpp_expansions_different_trad (const cpp_macro *,
 569                                             const cpp_macro *);
 570 extern uchar *_cpp_copy_replacement_text (const cpp_macro *, uchar *);
 571 extern size_t _cpp_replacement_text_len (const cpp_macro *);
 572
 573 /* In cppcharset.c.  */
 574 extern cppchar_t _cpp_valid_ucn (cpp_reader *, const uchar **,
 575                                  const uchar *, int);
 576 extern void _cpp_destroy_iconv (cpp_reader *);
 577 extern bool _cpp_interpret_string_notranslate (cpp_reader *,
 578                                                const cpp_string *,
 579                                                cpp_string *);
 580 extern uchar *_cpp_convert_input (cpp_reader *, const char *, uchar *,
 581                                   size_t, size_t, off_t *);
 582 extern const char *_cpp_default_encoding (void);
 583
 584
 585 /* Utility routines and macros.  */
 586 #define DSC(str) (const uchar *)str, sizeof str - 1
 587 #define xnew(T)         (T *) xmalloc (sizeof(T))
 588 #define xcnew(T)        (T *) xcalloc (1, sizeof(T))
 589 #define xnewvec(T, N)   (T *) xmalloc (sizeof(T) * (N))
 590 #define xcnewvec(T, N)  (T *) xcalloc (N, sizeof(T))
 591 #define xobnew(O, T)    (T *) obstack_alloc (O, sizeof(T))
 592
 593 /* These are inline functions instead of macros so we can get type
 594    checking.  */
 595 static inline int ustrcmp (const uchar *, const uchar *);
 596 static inline int ustrncmp (const uchar *, const uchar *, size_t);
 597 static inline size_t ustrlen (const uchar *);
 598 static inline uchar *uxstrdup (const uchar *);
 599 static inline uchar *ustrchr (const uchar *, int);
 600 static inline int ufputs (const uchar *, FILE *);
 601
 602 static inline int
 603 ustrcmp (const uchar *s1, const uchar *s2)
 604 {
 605   return strcmp ((const char *)s1, (const char *)s2);
 606 }
 607
 608 static inline int
 609 ustrncmp (const uchar *s1, const uchar *s2, size_t n)
 610 {
 611   return strncmp ((const char *)s1, (const char *)s2, n);
 612 }
 613
 614 static inline size_t
 615 ustrlen (const uchar *s1)
 616 {
 617   return strlen ((const char *)s1);
 618 }
 619
 620 static inline uchar *
 621 uxstrdup (const uchar *s1)
 622 {
 623   return (uchar *) xstrdup ((const char *)s1);
 624 }
 625
 626 static inline uchar *
 627 ustrchr (const uchar *s1, int c)
 628 {
 629   return (uchar *) strchr ((const char *)s1, c);
 630 }
 631
 632 static inline int
 633 ufputs (const uchar *s, FILE *f)
 634 {
 635   return fputs ((const char *)s, f);
 636 }
 637
 638 #endif /* ! GCC_CPPHASH_H */