[clang] [Clang] suggest headers on undeclared errors (PR #140247)

[Jongmyeong Choi via cfe-commits]

https://github.com/jongmyeong-choi edited 
https://github.com/llvm/llvm-project/pull/140247
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[clang] [Clang] suggest headers on undeclared errors (#120388) (PR #140247)

[Jongmyeong Choi via cfe-commits]

https://github.com/jongmyeong-choi created 
https://github.com/llvm/llvm-project/pull/140247

When a “use of undeclared identifier” error happens for a function listed in 
StdSymbolMap, emit a note telling the user which header to include.
Because nested-name-specifier errors occur before the function name is known, 
perform this lookup later in isCXXDeclarationSpecifier() after a parse failure.



  



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[clang] [Clang] suggest headers on undeclared errors (PR #140247)

[Jongmyeong Choi via cfe-commits]

jongmyeong-choi wrote:

I see it now. It's a good topic. I think we need to make more structural 
decisions and do a lot of pre-work to do this item. For now, let's close this 
change and discuss it in #139855.

https://github.com/llvm/llvm-project/pull/140247
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[clang] [Clang] suggest headers on undeclared errors (PR #140247)

[Jongmyeong Choi via cfe-commits]

https://github.com/jongmyeong-choi closed 
https://github.com/llvm/llvm-project/pull/140247
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[clang] [Clang] suggest headers on undeclared errors (PR #140247)

[Jongmyeong Choi via cfe-commits]

jongmyeong-choi wrote:

Thanks for all your reviews. I learned a lot from your comments. I'll try to 
rewrite it from scratch, but honestly, it'll take me a while to figure out the 
TableGen structure. If anyone wants to make a change to this topic, please feel 
free to jump in.

https://github.com/llvm/llvm-project/pull/140247
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