[analyzer] Variables with destructors are live until the destructor is run.

Test case in the next commit, which enables destructors under certain
circumstances.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160805 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/Analysis/LiveVariables.cpp b/lib/Analysis/LiveVariables.cpp
index 6e10ac1092..584d81284e 100644
--- a/lib/Analysis/LiveVariables.cpp
+++ b/lib/Analysis/LiveVariables.cpp
@@ -455,6 +455,12 @@ LiveVariablesImpl::runOnBlock(const CFGBlock *block,
   for (CFGBlock::const_reverse_iterator it = block->rbegin(),
        ei = block->rend(); it != ei; ++it) {
     const CFGElement &elem = *it;
+
+    if (const CFGAutomaticObjDtor *Dtor = dyn_cast<CFGAutomaticObjDtor>(&elem)){
+      val.liveDecls = DSetFact.add(val.liveDecls, Dtor->getVarDecl());
+      continue;
+    }
+
     if (!isa<CFGStmt>(elem))
       continue;