diff --git a/lib/Basic/SourceLocation.cpp b/lib/Basic/SourceLocation.cpp
index fd90b5a..dc1dceb 100644
--- a/lib/Basic/SourceLocation.cpp
+++ b/lib/Basic/SourceLocation.cpp
@@ -142,3 +142,7 @@
   const llvm::MemoryBuffer *Buf = getBuffer();
   return std::make_pair(Buf->getBufferStart(), Buf->getBufferEnd());
 }
+
+std::pair<FileID, unsigned> FullSourceLoc::getDecomposedLoc() const {
+  return SrcMgr->getDecomposedLoc(*this);
+}