Silence a warning from r201905

Avoid a warning about reaching the end of a non-void function after a
covered switch.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201919 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Basic/VirtualFileSystem.cpp b/lib/Basic/VirtualFileSystem.cpp
index 665fcc7af47a37407973c04d33e3db64d71b4b55..a107db68e441e5436a7d3a4a71801e9c293a566c 100644 (file)
--- a/lib/Basic/VirtualFileSystem.cpp
+++ b/lib/Basic/VirtualFileSystem.cpp
@@ -554,6 +554,7 @@ class VFSFromYAMLParser {
           Status("", "", getNextVirtualUniqueID(), sys::TimeValue::now(), 0, 0,
                  0, file_type::directory_file, sys::fs::all_all));
     }
+    llvm_unreachable("unknown EntryKind in switch");
   }
 
 public: