gcc/cpphash.h

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