From 88ea86c369f3faecfd20db27d5e7b3424051f976 Mon Sep 17 00:00:00 2001
From: Johannes Doerfert <johannes@jdoerfert.de>
Date: Thu, 17 Mar 2022 17:37:15 -0500
Subject: [PATCH] [Attributor][FIX] Remove reference into map that might dangle

The reference was taken and the map was modified after. This can (and
did) lead to dangling pointers and all sorts of problems afterwards.
---
 llvm/lib/Transforms/IPO/AttributorAttributes.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
index e9257ad..a2d5009 100644
--- a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
+++ b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
@@ -1344,7 +1344,7 @@ struct AAPointerInfoFloating : public AAPointerInfoImpl {
     DenseMap<Value *, OffsetInfo> OffsetInfoMap;
     OffsetInfoMap[&AssociatedValue] = OffsetInfo{0};
 
-    auto HandlePassthroughUser = [&](Value *Usr, OffsetInfo &PtrOI,
+    auto HandlePassthroughUser = [&](Value *Usr, OffsetInfo PtrOI,
                                      bool &Follow) {
       OffsetInfo &UsrOI = OffsetInfoMap[Usr];
       UsrOI = PtrOI;
-- 
2.7.4