| // Test that we don't have to deal with type punning | |
| // DR 1188 says this is ill-formed | |
| // { dg-do compile { target c++11 } } | |
| union U | |
| { | |
| float f; | |
| unsigned char ca[sizeof(float)]; | |
| }; | |
| constexpr U u = { 1.0 }; | |
| constexpr float f = u.f; | |
| constexpr unsigned char c = u.ca[0]; // { dg-error "U::ca" } | |
| constexpr double d = 1.0; | |
| constexpr unsigned char c2 = (unsigned char&)d; // { dg-error "char. glvalue" } |