gcc/testsuite/gcc.c-torture/compile/pr55920.c

   1 /* PR tree-optimization/55920 */
   2
   3 struct A { unsigned a; } __attribute__((packed));
   4 struct B { int b; unsigned char c[16]; };
   5 void bar (struct A);
   6
   7 void
   8 foo (struct B *x)
   9 {
  10   struct A a;
  11   if (x->b)
  12     __builtin_memcpy (&a, x->c, sizeof a);
  13   else
  14     a.a = 0;
  15   bar (a);
  16 }