1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/MC/MCCodeView.cpp b/llvm/lib/MC/MCCodeView.cpp
index 8ae0187237a..2d8ef442f75 100644
--- a/llvm/lib/MC/MCCodeView.cpp
+++ b/llvm/lib/MC/MCCodeView.cpp
@@ -118,6 +118,11 @@ void CodeViewContext::emitStringTable(MCObjectStreamer &OS) {
 }
 
 void CodeViewContext::emitFileChecksums(MCObjectStreamer &OS) {
+  // Do nothing if there are no file checksums. Microsoft's linker rejects empty
+  // CodeView substreams.
+  if (Filenames.empty())
+    return;
+
   MCContext &Ctx = OS.getContext();
   MCSymbol *FileBegin = Ctx.createTempSymbol("filechecksums_begin", false),
            *FileEnd = Ctx.createTempSymbol("filechecksums_end", false);