Add new value for given index in MDValuePtrs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80867 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index e0b5fd9..9ed75ab 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -332,6 +332,9 @@
   Value *PrevVal = OldV;
   OldV->replaceAllUsesWith(V);
   delete PrevVal;
+  // Deleting PrevVal sets Idx value in MDValuePtrs to null. Set new
+  // value for Idx.
+  MDValuePtrs[Idx] = V;
 }
 
 Value *BitcodeReaderMDValueList::getValueFwdRef(unsigned Idx) {