From: Sanjoy Das <sanjoy@playingwithpointers.com>
Date: Sun, 29 Nov 2015 23:15:43 +0000 (+0000)
Subject: Fix out of bounds access in hasStructRetAttr
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=4e6293afeb829a33137df86f5d58b010121bf8cd;p=oota-llvm.git

Fix out of bounds access in hasStructRetAttr

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254273 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/IR/Instructions.h b/include/llvm/IR/Instructions.h
index a5a48cb30b0..5119749ba73 100644
--- a/include/llvm/IR/Instructions.h
+++ b/include/llvm/IR/Instructions.h
@@ -1730,6 +1730,9 @@ public:
   /// \brief Determine if the call returns a structure through first
   /// pointer argument.
   bool hasStructRetAttr() const {
+    if (getNumArgOperands() == 0)
+      return false;
+
     // Be friendly and also check the callee.
     return paramHasAttr(1, Attribute::StructRet);
   }
@@ -3614,6 +3617,9 @@ public:
   /// \brief Determine if the call returns a structure through first
   /// pointer argument.
   bool hasStructRetAttr() const {
+    if (getNumArgOperands() == 0)
+      return false;
+
     // Be friendly and also check the callee.
     return paramHasAttr(1, Attribute::StructRet);
   }