kc3-lang/gnulib/tests/test-rawmemchr.c

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• Hash : 2b430e39
  Author :
  Date : 2008-04-28T17:08:43
  

  Add rawmemchr module, matching glibc.
  
  * modules/string (Makefile.am): New indicator.
  * m4/string_h.m4 (gl_HEADER_STRING_H_DEFAULTS): Set it.
  * lib/string.in.h (rawmemchr): Declare when appropriate.
  * modules/rawmemchr: New file.
  * m4/rawmemchr.m4: Likewise.
  * lib/rawmemchr.c: Likewise.
  * modules/rawmemchr-tests: Likewise.
  * tests/test-rawmemchr.c: Likewise.
  * doc/glibc-functions/rawmemchr.texi (rawmemchr): Document
  module.
  * modules/strchrnul (Depends-on): Add rawmemchr.
  * lib/strchrnul.c (strchrnul): Optimize a corner case.
  
  Signed-off-by: Eric Blake <ebb9@byu.net>
  

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• tests/test-rawmemchr.c

• /*
   * Copyright (C) 2008 Free Software Foundation
   * Written by Eric Blake and Bruno Haible
   *
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 3 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  #include <string.h>
  
  #include <stdio.h>
  #include <stdlib.h>
  
  #define ASSERT(expr) \
    do									     \
      {									     \
        if (!(expr))							     \
  	{								     \
  	  fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
  	  fflush (stderr);						     \
  	  abort ();							     \
  	}								     \
      }									     \
    while (0)
  
  /* Calculating void * + int is not portable, so this wrapper converts
     to char * to make the tests easier to write.  */
  #define RAWMEMCHR (char *) rawmemchr
  
  int
  main ()
  {
    size_t n = 0x100000;
    char *input = malloc (n + 1);
    ASSERT (input);
  
    input[0] = 'a';
    input[1] = 'b';
    memset (input + 2, 'c', 1024);
    memset (input + 1026, 'd', n - 1028);
    input[n - 2] = 'e';
    input[n - 1] = 'a';
    input[n] = '\0';
  
    /* Basic behavior tests.  */
    ASSERT (RAWMEMCHR (input, 'a') == input);
    ASSERT (RAWMEMCHR (input, 'b') == input + 1);
    ASSERT (RAWMEMCHR (input, 'c') == input + 2);
    ASSERT (RAWMEMCHR (input, 'd') == input + 1026);
  
    ASSERT (RAWMEMCHR (input + 1, 'a') == input + n - 1);
    ASSERT (RAWMEMCHR (input + 1, 'e') == input + n - 2);
  
    ASSERT (RAWMEMCHR (input, '\0') == input + n);
  
    /* Alignment tests.  */
    {
      int i, j;
      for (i = 0; i < 32; i++)
        {
          for (j = 0; j < 256; j++)
            input[i + j] = j;
          for (j = 0; j < 256; j++)
            {
              ASSERT (RAWMEMCHR (input + i, j) == input + i + j);
            }
        }
    }
  
    free (input);
  
    return 0;
  }
  

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