1 files changed, 4 insertions, 1 deletions
diff --git a/include/clang/Lex/HeaderSearch.h b/include/clang/Lex/HeaderSearch.h
index 51983b9ab5d8e..64c6f2a03f2b8 100644
--- a/include/clang/Lex/HeaderSearch.h
+++ b/include/clang/Lex/HeaderSearch.h
@@ -375,13 +375,16 @@ public:
   /// \param SuggestedModule If non-null, and the file found is semantically
   /// part of a known module, this will be set to the module that should
   /// be imported instead of preprocessing/parsing the file found.
+  ///
+  /// \param IsMapped If non-null, and the search involved header maps, set to
+  /// true.
   const FileEntry *LookupFile(
       StringRef Filename, SourceLocation IncludeLoc, bool isAngled,
       const DirectoryLookup *FromDir, const DirectoryLookup *&CurDir,
       ArrayRef<std::pair<const FileEntry *, const DirectoryEntry *>> Includers,
       SmallVectorImpl<char> *SearchPath, SmallVectorImpl<char> *RelativePath,
       Module *RequestingModule, ModuleMap::KnownHeader *SuggestedModule,
-      bool SkipCache = false, bool BuildSystemModule = false);
+      bool *IsMapped, bool SkipCache = false, bool BuildSystemModule = false);
 
   /// \brief Look up a subframework for the specified \#include file.
   ///