gnu/dist/gcc4/gcc/testsuite/gcc.c-torture/execute/builtins/lib/strncat.c

   1 extern void abort(void);
   2 extern int inside_main;
   3
   4 typedef __SIZE_TYPE__ size_t;
   5
   6 char *
   7 strncat (char *s1, const char *s2, size_t n)
   8 {
   9   char *dest = s1;
  10   char c = '\0';
  11 #ifdef __OPTIMIZE__
  12   if (inside_main)
  13     abort();
  14 #endif
  15   while (*s1) s1++;
  16   c = '\0';
  17   while (n > 0)
  18     {
  19       c = *s2++;
  20       *s1++ = c;
  21       if (c == '\0')
  22         return dest;
  23       n--;
  24     }
  25   if (c != '\0')
  26     *s1 = '\0';
  27   return dest;
  28 }