Destructuring array without initializer throws an exception

src/pattern-rewriter.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/ast.h"
 #include "src/messages.h"
 #include "src/parser.h"
 
 namespace v8 {
 
@@ skipping 226 matching lines @@
   for (ObjectLiteralProperty* property : *pattern->properties()) {
     RecurseIntoSubpattern(
         property->value(),
         factory()->NewProperty(factory()->NewVariableProxy(temp),
                                property->key(), RelocInfo::kNoPosition));
   }
 }
 
 
 void Parser::PatternRewriter::VisitArrayLiteral(ArrayLiteral* node) {
-  auto iterator = CreateTempVar(
-      descriptor_->parser->GetIterator(current_value_, factory()));
+  auto temp = CreateTempVar(current_value_);
+
+  block_->statements()->Add(descriptor_->parser->BuildAssertIsCoercible(temp),
+                            zone());
+
+  auto iterator = CreateTempVar(descriptor_->parser->GetIterator(
+      factory()->NewVariableProxy(temp), factory()));
   auto done = CreateTempVar(
       factory()->NewBooleanLiteral(false, RelocInfo::kNoPosition));
   auto result = CreateTempVar();
   auto v = CreateTempVar();
 
   Spread* spread = nullptr;
   for (Expression* value : *node->values()) {
     if (value->IsSpread()) {
       spread = value->AsSpread();
       break;
@@ skipping 152 matching lines @@
 NOT_A_PATTERN(TryFinallyStatement)
 NOT_A_PATTERN(UnaryOperation)
 NOT_A_PATTERN(VariableDeclaration)
 NOT_A_PATTERN(WhileStatement)
 NOT_A_PATTERN(WithStatement)
 NOT_A_PATTERN(Yield)
 
 #undef NOT_A_PATTERN
 }  // namespace internal
 }  // namespace v8