aaron.ballman added inline comments.

================
Comment at: 
clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp:47
+void DynamicStaticInitializersCheck::registerMatchers(MatchFinder *Finder) {
+  if (!getLangOpts().CPlusPlus || getLangOpts().ThreadsafeStatics)
+    return;
----------------
Why is this check disabled for C++? I would expect dynamic init of a static in 
a C++ header file would be flagged by this check.


================
Comment at: 
clang-tools-extra/test/clang-tidy/bugprone-dynamic-static-initializers.hpp:1
+// RUN: %check_clang_tidy %s bugprone-dynamic-static-initializers %t
+
----------------
I'm a bit confused.

1) Why is this file a .hpp if the check is currently supposed to be C-only?
2) Why are there no `#include` directives in the test if the check is supposed 
to only work on header files?

As best I can tell, this is a moral equivalent to doing: clang -x c whatever.h, 
and so this should be a compilation unit and not a header file. @alexfh, do you 
have thoughts there?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D62829/new/

https://reviews.llvm.org/D62829



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