Fix: <rdar://problem/7468209> SymbolManager::isLive() should not crash on captured block variables that are passed by reference


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91348 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/SymbolManager.cpp b/lib/Analysis/SymbolManager.cpp
index da91f55..3fe36b0 100644
--- a/lib/Analysis/SymbolManager.cpp
+++ b/lib/Analysis/SymbolManager.cpp
@@ -221,7 +221,8 @@
 }
 
 bool SymbolReaper::isLive(const Stmt *Loc, const VarRegion *VR) const {
-  return Liveness.isLive(Loc, VR->getDecl());
+  const StackFrameContext *SFC = VR->getStackFrame();
+  return SFC == CurrentStackFrame ? Liveness.isLive(Loc, VR->getDecl()) : true;
 }
 
 SymbolVisitor::~SymbolVisitor() {}