Add missing null check. Not sure why my tests passed before.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173292 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 4 deletions

diff --git a/lib/StaticAnalyzer/Checkers/NoReturnFunctionChecker.cpp b/lib/StaticAnalyzer/Checkers/NoReturnFunctionChecker.cpp
index 351eabf8df..0009e1b7cf 100644
--- a/lib/StaticAnalyzer/Checkers/NoReturnFunctionChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/NoReturnFunctionChecker.cpp
@@ -102,10 +102,12 @@ static bool END_WITH_NULL isMultiArgSelector(const Selector *Sel, ...) {
 void NoReturnFunctionChecker::checkPostObjCMessage(const ObjCMethodCall &Msg,
                                                    CheckerContext &C) const {
   // Check if the method is annotated with analyzer_noreturn.
-  const ObjCMethodDecl *MD = Msg.getDecl()->getCanonicalDecl();
-  if (MD->hasAttr<AnalyzerNoReturnAttr>()) {
-    C.generateSink();
-    return;
+  if (const ObjCMethodDecl *MD = Msg.getDecl()) {
+    MD = MD->getCanonicalDecl();
+    if (MD->hasAttr<AnalyzerNoReturnAttr>()) {
+      C.generateSink();
+      return;
+    }
   }
 
   // HACK: This entire check is to handle two messages in the Cocoa frameworks: