gcc/testsuite/gcc.dg/Wstringop-overflow-3.c

   1 /* PR tree-optimization/84238 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2" } */
   4 /* { dg-require-effective-target alloca } */
   5
   6 char a[1];
   7 int b;
   8 char *strncpy (char *, char *, __SIZE_TYPE__);
   9 void
  10 c ()
  11 {
  12   char d[b];
  13   strncpy (a, &d[3], 3); /* { dg-warning "writing 3 bytes into a region of size 1" } */
  14 }