| // PR c++/67147 |
| // { dg-do compile { target c++20 } } |
| |
| template <class F, class I1, class I2 = I1> |
| concept IndirectCallableRelation = true; |
| |
| template <class, class, class = void> |
| constexpr bool indirect_relation() { return false; } |
| |
| // FIXME: The original bug was found using the introducer syntax. |
| |
| template<typename F, typename I1> |
| requires IndirectCallableRelation<F, I1> |
| constexpr bool indirect_relation() { return true; } |
| |
| template<typename F, typename I1, typename I2> |
| requires IndirectCallableRelation<F, I1, I2> |
| constexpr bool indirect_relation() { return true; } |
| |
| // This was added to the discussion thread as a minimum repro. |
| |
| template<typename T, int = sizeof(T)> |
| concept C1 = true; |
| |
| template <C1 T> int test(); |
