From 66b0cebf7f736d888aae6c9aeb8c144049c24528 Mon Sep 17 00:00:00 2001
From: Yaron Keren <yaron.keren@gmail.com>
Date: Sun, 14 Sep 2014 20:36:28 +0000
Subject: In DwarfEHPrepare, after all passes are run, RewindFunction may be a
 dangling pointer to a dead function. To make sure it's valid, doFinalization
 nullptrs RewindFunction just like the constructor and so it will be found on
 next run.

llvm-svn: 217737
---
 llvm/lib/CodeGen/DwarfEHPrepare.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'llvm/lib/CodeGen')

diff --git a/llvm/lib/CodeGen/DwarfEHPrepare.cpp b/llvm/lib/CodeGen/DwarfEHPrepare.cpp
index 705e5d657c3..75b74d9a6c3 100644
--- a/llvm/lib/CodeGen/DwarfEHPrepare.cpp
+++ b/llvm/lib/CodeGen/DwarfEHPrepare.cpp
@@ -51,6 +51,11 @@ namespace {
 
     bool runOnFunction(Function &Fn) override;
 
+    bool doFinalization(Module &M) override {
+      RewindFunction = nullptr;
+      return false;
+    }
+
     void getAnalysisUsage(AnalysisUsage &AU) const override { }
 
     const char *getPassName() const override {
-- 
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