Fix crash in -Wuninitialized when using switch statments whose condition is a logical operation.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131158 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 5 deletions

diff --git a/lib/Analysis/UninitializedValues.cpp b/lib/Analysis/UninitializedValues.cpp
index 88a2db751a..fc0b904c83 100644
--- a/lib/Analysis/UninitializedValues.cpp
+++ b/lib/Analysis/UninitializedValues.cpp
@@ -214,11 +214,15 @@ static BinaryOperator *getLogicalOperatorInChain(const CFGBlock *block) {
   if (!b || !b->isLogicalOp())
     return 0;
   
-  if (block->pred_size() == 2 &&
-      ((block->succ_size() == 2 && block->getTerminatorCondition() == b) ||
-       block->size() == 1))
-    return b;
-  
+  if (block->pred_size() == 2) {
+    if (block->getTerminatorCondition() == b) {
+      if (block->succ_size() == 2)
+      return b;
+    }
+    else if (block->size() == 1)
+      return b;
+  }
+
   return 0;
 }