Index: lld/ELF/InputFiles.h
--- lld/ELF/InputFiles.h.orig
+++ lld/ELF/InputFiles.h
@@ -78,6 +78,8 @@ class InputFile { (public)
   StringRef getName() const { return mb.getBufferIdentifier(); }
   MemoryBufferRef mb;
 
+  void parseGNUWarning(Ctx &, StringRef name, ArrayRef<char> data, size_t size);
+
   // Returns sections. It is a runtime error to call this function
   // on files that don't have the notion of sections.
   ArrayRef<InputSectionBase *> getSections() const {
