gcc/testsuite/c-c++-common/Wstringop-truncation-3.c

   1 /* PR tree-optimization/84228 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wstringop-truncation -O2 -g" } */
   4
   5 char *strncpy (char *, const char *, __SIZE_TYPE__);
   6 struct S
   7 {
   8   char arr[64];
   9 };
  10
  11 int
  12 foo (struct S *p1, const char *a)
  13 {
  14   int b = 5, c = 6, d = 7;
  15   if (a)
  16     goto err;
  17   strncpy (p1->arr, a, sizeof p1->arr); /* { dg-bogus "specified bound" } */
  18   b = 8; c = 9; d = 10;
  19   p1->arr[3] = '\0';
  20 err:
  21   return 0;
  22 }