gcc/testsuite/gcc.dg/pr79222.c

   1 /* PR middle-end/79222 - missing -Wstringop-overflow= on a stpcpy overflow
   2    { dg-do compile }
   3    { dg-options "-O2" } */
   4
   5 extern char* stpcpy (char*, const char*);
   6
   7 char d[3];
   8
   9 char* f (int i)
  10 {
  11   const char *s = i < 0 ? "01234567" : "9876543210";
  12   return stpcpy (d, s);   /* { dg-warning ".stpcpy. writing between 9 and 11 bytes into a region of size 3 overflows the destination" } */
  13 }