--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/Sema/attr-wasm.c	Tue Jun 15 19:15:29 2021 +0900
@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 -triple wasm32-unknown-unknown -fsyntax-only -verify %s
+
+void name_a() __attribute__((import_name)); //expected-error {{'import_name' attribute takes one argument}}
+
+int name_b __attribute__((import_name("foo"))); //expected-error {{'import_name' attribute only applies to functions}}
+
+void name_c() __attribute__((import_name("foo", "bar"))); //expected-error {{'import_name' attribute takes one argument}}
+
+void name_d() __attribute__((import_name("foo", "bar", "qux"))); //expected-error {{'import_name' attribute takes one argument}}
+
+void name_z() __attribute__((import_name("foo"))); //expected-note {{previous attribute is here}}
+
+void name_z() __attribute__((import_name("bar"))); //expected-warning {{import name (bar) does not match the import name (foo) of the previous declaration}}
+
+void module_a() __attribute__((import_module)); //expected-error {{'import_module' attribute takes one argument}}
+
+int module_b __attribute__((import_module("foo"))); //expected-error {{'import_module' attribute only applies to functions}}
+
+void module_c() __attribute__((import_module("foo", "bar"))); //expected-error {{'import_module' attribute takes one argument}}
+
+void module_d() __attribute__((import_module("foo", "bar", "qux"))); //expected-error {{'import_module' attribute takes one argument}}
+
+void module_z() __attribute__((import_module("foo"))); //expected-note {{previous attribute is here}}
+
+void module_z() __attribute__((import_module("bar"))); //expected-warning {{import module (bar) does not match the import module (foo) of the previous declaration}}
+
+void both() __attribute__((import_name("foo"), import_module("bar")));