gcc/testsuite/g++.dg/pr64037.C

   1 // { dg-do run { target i?86-*-* x86_64-*-* } }
   2 // { dg-options "-std=c++11 -Os" }
   3
   4 enum class X : unsigned char {
   5   V = 2,
   6 };
   7
   8 static void
   9 __attribute__((noinline,noclone))
  10 foo(unsigned &out, unsigned a, X b)
  11 {
  12   out = static_cast<unsigned>(b);
  13 }
  14
  15 int main()
  16 {
  17   unsigned deadbeef = 0xDEADBEEF;
  18   asm volatile ("" : "+d" (deadbeef), "+c" (deadbeef));
  19
  20   unsigned out;
  21   foo(out, 2, X::V);
  22
  23   if (out != 2)
  24     __builtin_abort ();
  25
  26   return 0;
  27 }