NamedMDNode element is either null or MDNode. Otherwise this is a malformed NamedMDNo...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93037 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index 33da5e4d611a09742f8f6cec481ce8e2fc1fc655..bec9c50e301bbaebe0ee60d7d3609ad7631bde01 100644 (file)
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -793,8 +793,10 @@ bool BitcodeReader::ParseMetadata() {
           Elts.push_back(NULL);
         else {
           Value *MD = MDValueList.getValueFwdRef(Record[i]);
-          if (MDNode *B = dyn_cast_or_null<MDNode>(MD))
+          if (MDNode *B = dyn_cast<MDNode>(MD))
             Elts.push_back(B);
+          else
+            return Error("Malformed metadata record");
         }
       }
       Value *V = NamedMDNode::Create(Context, Name.str(), Elts.data(),