Fix a bug in DbiStreamBuilder::addDbgStream.

This feature will be tested in LLD unit tests.

llvm-svn: 283824

2 files changed, 3 insertions, 2 deletions

diff --git a/llvm/include/llvm/DebugInfo/PDB/Raw/DbiStreamBuilder.h b/llvm/include/llvm/DebugInfo/PDB/Raw/DbiStreamBuilder.h
index 72abba891d5..52b6b8784c9 100644
--- a/llvm/include/llvm/DebugInfo/PDB/Raw/DbiStreamBuilder.h
+++ b/llvm/include/llvm/DebugInfo/PDB/Raw/DbiStreamBuilder.h
@@ -101,7 +101,8 @@ private:
   msf::WritableStreamRef NamesBuffer;
   msf::MutableByteStream ModInfoBuffer;
   msf::MutableByteStream FileInfoBuffer;
-  llvm::SmallVector<DebugStream, (int)DbgHeaderType::Max> DbgStreams;
+  llvm::SmallVector<DebugStream, (int)DbgHeaderType::Max> DbgStreams{
+      (int)DbgHeaderType::Max};
 };
 }
 }
diff --git a/llvm/lib/DebugInfo/PDB/Raw/DbiStreamBuilder.cpp b/llvm/lib/DebugInfo/PDB/Raw/DbiStreamBuilder.cpp
index f76cb6ae5f6..55c3c0a2ca8 100644
--- a/llvm/lib/DebugInfo/PDB/Raw/DbiStreamBuilder.cpp
+++ b/llvm/lib/DebugInfo/PDB/Raw/DbiStreamBuilder.cpp
@@ -46,7 +46,7 @@ void DbiStreamBuilder::setMachineType(PDB_Machine M) { MachineType = M; }
 
 Error DbiStreamBuilder::addDbgStream(pdb::DbgHeaderType Type,
                                      ArrayRef<uint8_t> Data) {
-  if (DbgStreams[(int)Type].StreamNumber == kInvalidStreamIndex)
+  if (DbgStreams[(int)Type].StreamNumber != kInvalidStreamIndex)
     return make_error<RawError>(raw_error_code::duplicate_entry,
                                 "The specified stream type already exists");
   auto ExpectedIndex = Msf.addStream(Data.size());