Rakete1111 added inline comments.

================
Comment at: lib/Sema/Sema.cpp:445
+  // If it is a macro from system header, and if the macro name is not "NULL",
+  // do not warn.
+  SourceLocation MaybeMacroLoc = E->getLocStart();
----------------
That comment doesn't really add anything IMO. It just says what the code just 
below says.


================
Comment at: lib/Sema/Sema.cpp:447
+  SourceLocation MaybeMacroLoc = E->getLocStart();
+  if (SourceMgr.isInSystemMacro(E->getLocStart()) &&
+      !findMacroSpelling(MaybeMacroLoc, "NULL"))
----------------
Please use `MaybeMacroLoc` there too.


Repository:
  rL LLVM

https://reviews.llvm.org/D38954



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