[PATCH] D33841: [clang-tidy] redundant 'extern' keyword check

[Daniel Kolozsvari via Phabricator via cfe-commits]

koldaniel marked an inline comment as done.
koldaniel added inline comments.


================
Comment at: clang-tidy/readability/RedundantExternCheck.cpp:30
+
+  if (FD->getStorageClass() != SC_Extern)
+    return;
----------------
lebedev.ri wrote:
> Can you do that in `registerMatchers()`?
The only way I found for that is to use the matcher `hasExternalFormalLinkage`, but the problem with it is that now the checker warns not only for the redundant `extern` usage, but for the unnecessary too - in the latter case the linkage is internal, and I think by checking the storage class we can determine whether the `extern` keyword has been used or not.


================
Comment at: clang-tidy/readability/RedundantExternCheck.cpp:43-44
+
+  if (FD->getBeginLoc().isMacroID())
+    return;
+
----------------
lebedev.ri wrote:
> Similarly, do this in `registerMatchers()`
Could you please help me how could I achieve that? I did not find any matchers which match for macros.


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  https://reviews.llvm.org/D33841/new/

https://reviews.llvm.org/D33841