[parser] parenthesized Literals are not valid AssignmentPatterns

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 a6bb8ecad3e400214d66511344032956949245cc..5414ecb8676f7e135bc5de881a2f18d2bab4b9f5 100644
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -7042,6 +7042,13 @@ TEST(DestructuringAssignmentNegativeTests) {
     "[...x,]",
     "[x, y, ...z = 1]",
     "[...z = 1]",
+
+    // v8:4657

[adamk, 2016/01/08 16:24:23]

Please add a few tests with multiple levels of parens?

[caitp (gmail), 2016/01/08 16:36:01]

Done

+    "({ x: x4, x: (x+=1e4) })",
+    "({ x: x4, x: (x+=1e4) } = {})",
+    "({ x: y } = {})",
+    "([a])",
+    "([a] = [])",
     NULL};
   // clang-format on
   static const ParserFlag always_flags[] = {