[clang] [LifetimeSafety] Detect use-after-return (PR #165370)

[Kashika Akhouri via cfe-commits]

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@@ -43,7 +43,7 @@ struct LivenessInfo {
   /// multiple uses along different paths, this will point to the use appearing
   /// earlier in the translation unit.
   /// This is 'null' when the origin is not live.
-  const UseFact *CausingUseFact;
+  const Fact *CausingFact;
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kashika0112 wrote:

I have refactored the code to use llvm::PointerUnion<UseFact*, OriginEscapeFact* >

https://github.com/llvm/llvm-project/pull/165370