gcc/testsuite/gcc.c-torture/execute/builtins/string-asm-1-lib.c

   1 extern int inside_main;
   2 extern const char *p;
   3
   4 char *
   5 my_strstr (const char *s1, const char *s2)
   6 {
   7   __SIZE_TYPE__ len = strlen (s2);
   8
   9 #ifdef __OPTIMIZE__
  10   /* If optimizing, we should be called only in the strstr (foo + 2, p)
  11      case.  All other cases should be optimized.  */
  12   if (inside_main)
  13     if (s2 != p || strcmp (s1, "hello world" + 2) != 0)
  14       abort ();
  15 #endif
  16   if (len == 0)
  17     return (char *) s1;
  18   for (s1 = strchr (s1, *s2); s1; s1 = strchr (s1 + 1, *s2))
  19     if (strncmp (s1, s2, len) == 0)
  20       return (char *) s1;
  21   return (char *) 0;
  22 }
  23
  24 char *
  25 strstr (const char *s1, const char *s2)
  26 {
  27   if (inside_main)
  28     abort ();
  29
  30   return my_strstr (s1, s2);
  31 }