1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp b/llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp
index 386f8ac80a5..f34a513f499 100644
--- a/llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp
+++ b/llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp
@@ -104,6 +104,10 @@ Error TpiStream::reload() {
     return EC;
 
   // Hash indices, hash values, etc come from the hash stream.
+  if (Header->HashStreamIndex >= Pdb.getNumStreams())
+    return make_error<RawError>(raw_error_code::corrupt_file,
+                                "Invalid TPI hash stream index.");
+
   HashStream.reset(new MappedBlockStream(
       llvm::make_unique<IndexedStreamData>(Header->HashStreamIndex, Pdb), Pdb));
   codeview::StreamReader HSR(*HashStream);