gcc/testsuite/gcc.target/sh/pr64507.c

   1 /* Check that the __builtin_strnlen returns 0 with with
   2    non-constant 0 length.  */
   3 /* { dg-do run } */
   4 /* { dg-options "-O2" } */
   5
   6 extern int snprintf(char *, int, const char *, ...);
   7 extern void abort (void);
   8
   9 int main()
  10  {
  11    int i;
  12    int cmp = 0;
  13    char buffer[1024];
  14    const char* s = "the string";
  15
  16    snprintf(buffer, 4, "%s", s);
  17
  18    for (i = 1; i < 4; i++)
  19      cmp += __builtin_strncmp(buffer, s, i - 1);
  20
  21   if (cmp)
  22     abort();
  23
  24   return 0;
  25 }