[AAUnderlyingObjects] Initialize an uninitialized boolean.

Recent commit introducing AA for getting underluying objects of a
pointer created an uninitialized boolean, which causes tests to fail
when built unter asan/ubsan. This initialized that variable.

diff --git a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
index 9c67a00..00c1c3e 100644 (file)
--- a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
+++ b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
@@ -11228,7 +11228,7 @@ struct AAUnderlyingObjectsImpl
 
     auto DoUpdate = [&](SmallSetVector<Value *, 8> &UnderlyingObjects,
                         AA::ValueScope Scope) {
-      bool UsedAssumedInformation;
+      bool UsedAssumedInformation = false;
       SmallPtrSet<Value *, 8> SeenObjects;
       SmallVector<AA::ValueAndContext> Values;