| // PR c++/91264 | |
| // { dg-do compile { target c++14 } } | |
| struct X { | |
| int j; | |
| constexpr X() : j(0) { } | |
| }; | |
| struct Y { | |
| X x; | |
| constexpr Y() : x{} { } | |
| }; | |
| constexpr void | |
| g () | |
| { | |
| const Y y; // { dg-message "originally declared" } | |
| Y *p = const_cast<Y *>(&y); | |
| p->x.j = 99; // { dg-error "modifying a const object" } | |
| } | |
| static_assert((g() , 1), ""); // { dg-error "non-constant condition" } | |
| // { dg-message "in 'constexpr' expansion of" "" { target *-*-* } .-1 } |