[parser] report SyntaxError if rest parameter used in Setter MethodDefinition

test/cctest/test-parsing.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5091 matching lines @@
       "a,\ta, ...args",
       "a,\ra, ...args",
       "a,\na, ...args",
       NULL};
   static const ParserFlag always_flags[] = {kAllowHarmonyRestParameters};
   RunParserSyncTest(context_data, data, kError, NULL, 0, always_flags,
                     arraysize(always_flags));
 }
 
 
+TEST(RestParameterInSetterMethodError) {
+  const char* context_data[][2] = {
+      {"'use strict';({ set prop(", ") {} }).prop = 1;"},
+      {"'use strict';(class { static set prop(", ") {} }).prop = 1;"},
+      {"'use strict';(new (class { set prop(", ") {} })).prop = 1;"},
+      {"({ set prop(", ") {} }).prop = 1;"},
+      {"(class { static set prop(", ") {} }).prop = 1;"},
+      {"(new (class { set prop(", ") {} })).prop = 1;"},
+      {nullptr, nullptr}};
+  const char* data[] = {"...a", "...arguments", "...eval", nullptr};
+
+  static const ParserFlag always_flags[] = {
+      kAllowHarmonyRestParameters, kAllowHarmonyClasses, kAllowHarmonySloppy};
+  RunParserSyncTest(context_data, data, kError, nullptr, 0, always_flags,
+                    arraysize(always_flags));
+}
+
+
 TEST(RestParametersEvalArguments) {
   const char* strict_context_data[][2] =
       {{"'use strict';(function(",
         "){ return;})(1, [], /regexp/, 'str',function(){});"},
        {NULL, NULL}};
   const char* sloppy_context_data[][2] =
       {{"(function(",
         "){ return;})(1, [],/regexp/, 'str', function(){});"},
        {NULL, NULL}};
 
@@ skipping 1334 matching lines @@
     const char* data[] = {
       "yield",
       "[yield]",
       "{ x : yield }",
       NULL};
     // clang-format on
     RunParserSyncTest(context_data, data, kError, NULL, 0, always_flags,
                       arraysize(always_flags));
   }
 }