1 files changed, 8 insertions, 0 deletions
diff --git a/include/clang/Frontend/TextDiagnosticPrinter.h b/include/clang/Frontend/TextDiagnosticPrinter.h
index d727e48..d09e51f 100644
--- a/include/clang/Frontend/TextDiagnosticPrinter.h
+++ b/include/clang/Frontend/TextDiagnosticPrinter.h
@@ -37,11 +37,19 @@ class TextDiagnosticPrinter : public DiagnosticClient {
   unsigned LastCaretDiagnosticWasNote : 1;
   unsigned OwnsOutputStream : 1;
 
+  /// A string to prefix to error messages.
+  std::string Prefix;
+
 public:
   TextDiagnosticPrinter(llvm::raw_ostream &os, const DiagnosticOptions &diags,
                         bool OwnsOutputStream = false);
   virtual ~TextDiagnosticPrinter();
 
+  /// setPrefix - Set the diagnostic printer prefix string, which will be
+  /// printed at the start of any diagnostics. If empty, no prefix string is
+  /// used.
+  void setPrefix(std::string Value) { Prefix = Value; }
+
   void BeginSourceFile(const LangOptions &LO, const Preprocessor *PP) {
     LangOpts = &LO;
   }