Be defensive when printing module import locations; the diagnostic printer needs...

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 651ddd66b4fc1abe9f106bd6b4a1817e00d7a114..aba90f6046b8a2a836846fe34619131d573cb2f3 100644 (file)
--- a/lib/Frontend/TextDiagnostic.cpp
+++ b/lib/Frontend/TextDiagnostic.cpp
@@ -898,7 +898,7 @@ void TextDiagnostic::emitBuildingModuleLocation(SourceLocation Loc,
                                                 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