[PATCH] D15794: CheckerContext::isCLibraryFunction(): small refactoring; NFC

[Aleksei Sidorin via cfe-commits]

a.sidorin created this revision.
a.sidorin added reviewers: zaks.anna, xazax.hun, dcoughlin.
a.sidorin added a subscriber: cfe-commits.
a.sidorin set the repository for this revision to rL LLVM.

Use getRedeclContext() instead of a manually written loop; fix a comment.

Repository:
  rL LLVM

http://reviews.llvm.org/D15794

Files:
  lib/StaticAnalyzer/Core/CheckerContext.cpp

Index: lib/StaticAnalyzer/Core/CheckerContext.cpp
===================================================================
--- lib/StaticAnalyzer/Core/CheckerContext.cpp
+++ lib/StaticAnalyzer/Core/CheckerContext.cpp
@@ -57,12 +57,8 @@
     return false;
 
   // Look through 'extern "C"' and anything similar invented in the future.
-  const DeclContext *DC = FD->getDeclContext();
-  while (DC->isTransparentContext())
-    DC = DC->getParent();
-
-  // If this function is in a namespace, it is not a C library function.
-  if (!DC->isTranslationUnit())
+  // If this function is not in TU directly, it is not a C library function.
+  if (!FD->getDeclContext()->getRedeclContext()->isTranslationUnit())
     return false;
 
   // If this function is not externally visible, it is not a C library function.


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