Fix GCC -Wreturn-type warnings. NFC.

llvm-svn: 373422

diff --git a/llvm/include/llvm/BinaryFormat/Dwarf.h b/llvm/include/llvm/BinaryFormat/Dwarf.h
index 21962bf..21cdc6a 100644 (file)
--- a/llvm/include/llvm/BinaryFormat/Dwarf.h
+++ b/llvm/include/llvm/BinaryFormat/Dwarf.h
@@ -230,6 +230,7 @@ inline bool isCPlusPlus(SourceLanguage S) {
   case DW_LANG_hi_user:
     return false;
   }
+  llvm_unreachable("Invalid source language");
 }
 
 enum CaseSensitivity {