khuttun added a comment.

In D46317#2027071 <https://reviews.llvm.org/D46317#2027071>, @aaron.ballman 
wrote:

> In D46317#2023406 <https://reviews.llvm.org/D46317#2023406>, @khuttun wrote:
>
> > Any comments on this? Is this checker something that could be part of 
> > clang-tidy?
>
>
> Thank you for posting some of the diagnostics found by the check, that was 
> really helpful information! I spot-checked ~10 of the issues it reported and 
> all of them were false positives. Were you able to find any true positives 
> from that list? I think 1200 reports without any true positives indicates 
> that the check may be too chatty to include (it may also suggest that 
> `bugprone` is the wrong place for the check).


It's difficult to spot actual functionality bugs without knowing the code 
better, but there's plenty of unnecessary double-lookups (count()/find() + 
operator[]) reported, for example:

clang-tools-extra/clang-reorder-fields/ReorderFieldsAction.cpp:75:30
clang-tools-extra/clang-tidy/bugprone/ForwardDeclarationNamespaceCheck.cpp:157:33
clang-tools-extra/clang-tidy/modernize/DeprecatedHeadersCheck.cpp:106:29


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D46317/new/

https://reviews.llvm.org/D46317



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