ssa: MakeInterface check abi.KindDirectIface

internal/runtime/z_face.go

@@ -132,7 +132,7 @@ func doInitNamed(ret *Type, pkgPath, name string, underlying *Type, methods []Me
 		panic("runtime: underlying type is already named")
 	}
 
-	kind := abi.Kind(ret.Kind_)
+	kind := ret.Kind()
 	if ret.TFlag != abi.TFlagUninited || kind != underlying.Kind() {
 		panic("initNamed: unexpected named type")
 	}
@@ -246,4 +246,11 @@ func methods(u *abi.UncommonType, from string) []abi.Method {
 	return u.ExportedMethods()
 }
 
+func IfaceData(i iface) unsafe.Pointer {
+	if i.tab._type.Kind_&abi.KindDirectIface != 0 {
+		return unsafe.Pointer(&i.data)
+	}
+	return i.data
+}
+
 // -----------------------------------------------------------------------------