Teach -Wuninitialized to not warn about variables declared in C++ catch statements.

llvm-svn: 129102

clang/lib/Analysis/UninitializedValues.cpp

@@ -27,6 +27,7 @@ using namespace clang;
 
 static bool isTrackedVar(const VarDecl *vd, const DeclContext *dc) {
   if (vd->isLocalVarDecl() && !vd->hasGlobalStorage() &&
+      !vd->isExceptionVariable() &&
       vd->getDeclContext() == dc) {
     QualType ty = vd->getType();
     return ty->isScalarType() || ty->isVectorType();

clang/test/SemaCXX/uninit-variables.cpp

@@ -78,3 +78,17 @@ void PR9625() {
     (void)static_cast<float>(x); // no-warning
   }
 }
+
+// Don't warn about variables declared in "catch"
+void RDar9251392_bar(const char *msg);
+
+void RDar9251392() {
+  try {
+    throw "hi";
+  }
+  catch (const char* msg) {
+    RDar9251392_bar(msg); // no-warning
+  }
+}
+
+