gcc/testsuite/gcc.dg/torture/pr70740-1.c

   1 /* { dg-do compile } */
   2
   3 /* This is an alternative to the original pr70740.c testcase,
   4    arrays are now 1 in size where they were 0 in the other testcase. */
   5
   6 extern int foo (void);
   7 extern void *memcpy (void *, const void *, __SIZE_TYPE__);
   8
   9 struct
  10 {
  11   char a[6];
  12 } d;
  13 struct
  14 {
  15   int a1[1];
  16   int a2[1];
  17   int a3[1];
  18   int a4[1];
  19 } a, c;
  20 int b;
  21
  22 int *
  23 bar ()
  24 {
  25   if (b)
  26     return a.a4;
  27   return a.a2;
  28 }
  29
  30 void
  31 baz ()
  32 {
  33   int *e, *f;
  34   if (foo ())
  35     e = c.a3;
  36   else
  37     e = c.a1;
  38   memcpy (d.a, e, 6);
  39   f = bar ();
  40   memcpy (d.a, f, 1);
  41 }