1  /* PR middle-end/99578 */
       2  /* { dg-do compile { target int32 } } */
       3  /* { dg-options "-O2 -Wstringop-overflow" } */
       4  
       5  struct S { int a, b[4]; };
       6  struct T { int a, b[8192], c[4]; };
       7  
       8  void
       9  foo (struct S *p)
      10  {
      11    if (p) return;
      12    __builtin_memset (p->b, 0, sizeof p->b);	/* { dg-warning "writing 16 bytes into a region of size 0 overflows the destination" } */
      13  }
      14  
      15  void
      16  bar (struct T *p)
      17  {
      18    if (p) return;
      19    __builtin_memset (p->c, 0, sizeof p->c);	/* { dg-warning "writing 16 bytes into a region of size 0 overflows the destination" "" { xfail *-*-* } } */
      20  }
      21  
      22  void
      23  baz (void)
      24  {
      25    __builtin_memset ((void *) 0x8004, 0, 16);	/* { dg-bogus "overflows the destination" } */
      26  }