gcc/testsuite/gcc.dg/torture/pr69715.c

   1 /* { dg-do compile } */
   2
   3 struct __attribute__((may_alias)) S { long long low; int high; };
   4 struct S foo (void);
   5 long double
   6 bar (void)
   7 {
   8   long double a;
   9   *(struct S *)&a = foo ();
  10   return a;
  11 }