[PATCH] D84455: [Concepts] Fix a deserialization crash.

[Haojian Wu via Phabricator via cfe-commits]

hokein added a comment.

btw, `getTypeConstraint` and `hasTypeConstraint` APIs are quite easy to be misused (there is another similar bug in getAssociatedConstraints <https://github.com/llvm/llvm-project/blob/master/clang/include/clang/AST/DeclTemplate.h#L1367-L1368>), I think we need to refine them (rename or so) to make them less confusing.


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D84455