r181329 - Prevent crashes from hasCanonicalType matcher

[Edwin Vane]

Author: revane
Date: Tue May  7 10:53:23 2013
New Revision: 181329

URL: http://llvm.org/viewvc/llvm-project?rev=181329&view=rev
Log:
Prevent crashes from hasCanonicalType matcher

Adding an QualType::isNull() check.


Modified:
    cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h

Modified: cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h?rev=181329&r1=181328&r2=181329&view=diff
==============================================================================
--- cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h (original)
+++ cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h Tue May  7 10:53:23 2013
@@ -1841,6 +1841,8 @@ AST_MATCHER_P(QualType, references, inte
 /// varDecl(hasType(qualType(hasCanonicalType(referenceType())))))) does.
 AST_MATCHER_P(QualType, hasCanonicalType, internal::Matcher<QualType>,
               InnerMatcher) {
+  if (Node.isNull())
+    return false;
   return InnerMatcher.matches(Node.getCanonicalType(), Finder, Builder);
 }