Younan Zhang 03229e7c0b [Clang][Parser] Don't evaluate concept when its definition is invalid (#111179) ...

Since #103867, the nullness of the concept declaration has been turned
to represent a state in which the concept definition is being parsed and
used for self-reference checking.

However, PR missed a case where such a definition could be invalid, and
we shall inhibit making it into evaluation.

Fixes https://github.com/llvm/llvm-project/issues/109780

2024-10-10 09:36:00 +08:00

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