[async functions] Disallow 'await' in arrow params inside async functions

test/cctest/test-parsing.cc

Index: test/cctest/test-parsing.cc
diff --git a/test/cctest/test-parsing.cc b/test/cctest/test-parsing.cc
index 2b8e0fb3a6c8869409a51280d1395b15065ee832..39ad78c65eda84901e0368fa9ea1351bb93da8b2 100644
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -7798,7 +7798,6 @@ TEST(AsyncAwait) {
     "function foo(await) { return await; }",
     "function* foo() { var await = 1; return await; }",
     "function* foo(await) { return await; }",
-    "var f = (await) => await;",
     "var f = () => { var await = 1; return await; }",
     "var O = { method() { var await = 1; return await; } };",
     "var O = { method(await) { return await; } };",
@@ -7885,6 +7884,8 @@ TEST(AsyncAwaitErrors) {
     "var O = { async method() { function await() {} } }",
     "async function foo() { function await() {} }",
 
+    "async function foo() { var f = (await) => await; }",
+
     // Henrique Ferreiro's bug (tm)
     "(async function foo1() { } foo2 => 1)",
     "(async function foo3() { } () => 1)",