Forward accept_IN to ParseYieldExpression

test/mjsunit/regress/regress-4945.js

Index: test/mjsunit/regress/regress-4945.js
diff --git a/test/mjsunit/ignition/dead-code-source-position.js b/test/mjsunit/regress/regress-4945.js
similarity index 62%
copy from test/mjsunit/ignition/dead-code-source-position.js
copy to test/mjsunit/regress/regress-4945.js
index 95bb9183b880229a703e58503e9aec2a673015aa..8e595e6fde92de611f3398ef510f33a5b740e86a 100644
--- a/test/mjsunit/ignition/dead-code-source-position.js
+++ b/test/mjsunit/regress/regress-4945.js
@@ -2,8 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-function f() {
-  for (f(x) in []) { f(new f()) }
+function* g(o) {
+  yield 'x' in o;
 }
 
-f();
+assertTrue(g({x: 1}).next().value);
+assertFalse(g({}).next().value);