It is possible that main input file does not have any symbol with debug info. To handle this edge case, always create main compile unit first.

This fixes PR 4228.

llvm-svn: 73520

1 files changed, 3 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/CGDebugInfo.h b/clang/lib/CodeGen/CGDebugInfo.h
index de655800fa0..8f3368e4ebf 100644
--- a/clang/lib/CodeGen/CGDebugInfo.h
+++ b/clang/lib/CodeGen/CGDebugInfo.h
@@ -111,7 +111,9 @@ private:
   void EmitDeclare(const VarDecl *decl, unsigned Tag, llvm::Value *AI,
                    CGBuilderTy &Builder);
   
-  
+  /// createCompileUnit - Create a new unit for the given file.
+  llvm::DICompileUnit createCompileUnit(const char *FileName, bool isMain);
+
   /// getOrCreateCompileUnit - Get the compile unit from the cache or create a
   /// new one if necessary.
   llvm::DICompileUnit getOrCreateCompileUnit(SourceLocation Loc);