gcc/testsuite/gcc.dg/torture/pr70740.c

   1 /* { dg-do compile } */
   2
   3 extern int foo (void);
   4 extern void *memcpy (void *, const void *, __SIZE_TYPE__);
   5
   6 struct
   7 {
   8   char a[6];
   9 } d;
  10 struct
  11 {
  12   int a1[0];
  13   int a2[0];
  14   int a3[0];
  15   int a4[];
  16 } a, c;
  17 int b;
  18
  19 int *
  20 bar ()
  21 {
  22   if (b)
  23     return a.a4;
  24   return a.a2;
  25 }
  26
  27 void
  28 baz ()
  29 {
  30   int *e, *f;
  31   if (foo ())
  32     e = c.a3;
  33   else
  34     e = c.a1;
  35   memcpy (d.a, e, 6);
  36   f = bar ();
  37   memcpy (d.a, f, 1);
  38 }