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