old-autovect-branch/gcc/testsuite/gcc.c-torture/execute/builtins/lib/strncmp.c

   1 extern void abort (void);
   2 extern int inside_main;
   3
   4 typedef __SIZE_TYPE__ size_t;
   5
   6 int
   7 strncmp(const char *s1, const char *s2, size_t n)
   8 {
   9   const unsigned char *u1 = (const unsigned char *)s1;
  10   const unsigned char *u2 = (const unsigned char *)s2;
  11   unsigned char c1, c2;
  12
  13 #ifdef __OPTIMIZE__
  14   if (inside_main)
  15     abort();
  16 #endif
  17
  18   while (n > 0)
  19     {
  20       c1 = *u1++, c2 = *u2++;
  21       if (c1 == '\0' || c1 != c2)
  22         return c1 - c2;
  23       n--;
  24     }
  25   return c1 - c2;
  26 }