gcc/testsuite/gcc.dg/Wstringop-overflow-19.c

   1 /* PR middle-end/92014 - bogus warning: writing 8 bytes into a region
   2    of size 1 in timezone/zic.c
   3    { dg-do compile }
   4    { dg-options "-O2 -Wall" } */
   5
   6 struct
   7 {
   8   char *s1, *s2;
   9   char c;
  10 } z;
  11
  12
  13 void f (char **a, int i, int j)
  14 {
  15   char * cp = __builtin_strchr (a[i], '%');
  16
  17   if (cp && *++cp != 's')
  18     return;
  19
  20   z.s1 = __builtin_strdup (a[i]);
  21   if (!z.s1) __builtin_abort ();
  22
  23   z.s2 = __builtin_strdup (a[j]);
  24   if (!z.s2) __builtin_abort ();
  25
  26   z.c = cp ? *cp : '\0';    // { dg-bogus "\\\[-Wstringop-overflow" }
  27 }