twine_cfg_undefined_behavior.patch

From b42222e01abc1a799c4e421fa26d72d49afe4b99 Mon Sep 17 00:00:00 2001
From: Siu Kwan Lam <michael.lam.sk@gmail.com>
Date: Fri, 23 Mar 2018 11:46:45 -0500
Subject: [PATCH] Patch to fix undefined behavior in cfgprinter

---
 include/llvm/Analysis/CFGPrinter.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/llvm/Analysis/CFGPrinter.h b/include/llvm/Analysis/CFGPrinter.h
index 5786769..a4b642b 100644
--- a/include/llvm/Analysis/CFGPrinter.h
+++ b/include/llvm/Analysis/CFGPrinter.h
@@ -172,8 +172,7 @@ struct DOTGraphTraits<const Function*> : public DefaultDOTGraphTraits {
 
     // Prepend a 'W' to indicate that this is a weight rather than the actual
     // profile count (due to scaling).
-    Twine Attrs = "label=\"W:" + Twine(Weight->getZExtValue()) + "\"";
-    return Attrs.str();
+    return ("label=\"W:" + Twine(Weight->getZExtValue()) + "\"").str();
   }
 };
 } // End llvm namespace
-- 
2.10.1