From d7677e7a8d3bdcce751a37deabe35533a9018759 Mon Sep 17 00:00:00 2001
From: David Majnemer <david.majnemer@gmail.com>
Date: Wed, 11 Feb 2015 09:13:06 +0000
Subject: Verifier: Check for null operands in !llvm.module.flags

llvm-svn: 228818
---
 llvm/lib/IR/Module.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'llvm/lib/IR/Module.cpp')

diff --git a/llvm/lib/IR/Module.cpp b/llvm/lib/IR/Module.cpp
index d32ffcd..b0abe8c 100644
--- a/llvm/lib/IR/Module.cpp
+++ b/llvm/lib/IR/Module.cpp
@@ -278,7 +278,7 @@ void Module::eraseNamedMetadata(NamedMDNode *NMD) {
 }
 
 bool Module::isValidModFlagBehavior(Metadata *MD, ModFlagBehavior &MFB) {
-  if (ConstantInt *Behavior = mdconst::dyn_extract<ConstantInt>(MD)) {
+  if (ConstantInt *Behavior = mdconst::dyn_extract_or_null<ConstantInt>(MD)) {
     uint64_t Val = Behavior->getLimitedValue();
     if (Val >= ModFlagBehaviorFirstVal && Val <= ModFlagBehaviorLastVal) {
       MFB = static_cast<ModFlagBehavior>(Val);
@@ -298,7 +298,7 @@ getModuleFlagsMetadata(SmallVectorImpl<ModuleFlagEntry> &Flags) const {
     ModFlagBehavior MFB;
     if (Flag->getNumOperands() >= 3 &&
         isValidModFlagBehavior(Flag->getOperand(0), MFB) &&
-        isa<MDString>(Flag->getOperand(1))) {
+        dyn_cast_or_null<MDString>(Flag->getOperand(1))) {
       // Check the operands of the MDNode before accessing the operands.
       // The verifier will actually catch these failures.
       MDString *Key = cast<MDString>(Flag->getOperand(1));
-- 
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