| // PR c++/91353 - P1331R2: Allow trivial default init in constexpr contexts. | |
| // { dg-do compile { target c++20 } } | |
| struct S { int i; }; | |
| constexpr void | |
| fn () | |
| { | |
| S s; | |
| []() constexpr { | |
| int i; | |
| }(); | |
| } | |
| constexpr int | |
| fn2 () | |
| { | |
| return __extension__ ({ int n; n; }); // { dg-error "not usable in a constant expression" } | |
| } | |
| constexpr int i = fn2 (); // { dg-message "in .constexpr. expansion of" } |