Be defensive when printing module import locations; the diagnostic printer needs to be robust
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170466 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/TextDiagnostic.cpp b/lib/Frontend/TextDiagnostic.cpp
index 651ddd6..aba90f6 100644
--- a/lib/Frontend/TextDiagnostic.cpp
+++ b/lib/Frontend/TextDiagnostic.cpp
@@ -898,7 +898,7 @@
PresumedLoc PLoc,
StringRef ModuleName,
const SourceManager &SM) {
- if (DiagOpts->ShowLocation)
+ if (DiagOpts->ShowLocation && PLoc.getFilename())
OS << "While building module '" << ModuleName << "' imported from "
<< PLoc.getFilename() << ':' << PLoc.getLine() << ":\n";
else