Silence a "not all control paths return" MSVC warning; NFC

diff --git a/clang/lib/AST/Interp/Descriptor.cpp b/clang/lib/AST/Interp/Descriptor.cpp
index 55182ec..f645063 100644 (file)
--- a/clang/lib/AST/Interp/Descriptor.cpp
+++ b/clang/lib/AST/Interp/Descriptor.cpp
@@ -184,6 +184,7 @@ static BlockCtorFn getCtorArrayPrim(PrimType Type) {
 
 static BlockDtorFn getDtorArrayPrim(PrimType Type) {
   TYPE_SWITCH(Type, return dtorArrayTy<T>);
+  llvm_unreachable("unknown Expr");
 }
 
 static BlockMoveFn getMoveArrayPrim(PrimType Type) {