[PATCH] D149516: [Sema] `setInvalidDecl` for error deduction declaration

[Shafik Yaghmour via Phabricator via cfe-commits]

shafik added a comment.

Thank you for the fix.

I have some questions, why don't we always call `CheckDeductionGuideDeclarator` when calling `CXXDeductionGuideDecl::Create`, I felt like perhaps `CheckDeductionGuideDeclarator` should be rolled into `CXXDeductionGuideDecl::Create` but then I noticed they are not paired up in other locations.

CC @rsmith


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  https://reviews.llvm.org/D149516/new/

https://reviews.llvm.org/D149516