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// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// VMOptions=--deterministic --optimization_counter_threshold=20
// Verifies that SSA construction doesn't crash when handling a Phi
// corresponding to an expression temp in case of OSR with non-empty
// expression stack.
// Regression test for
import 'package:expect/expect.dart';
class Foo {
List<Object> data;
Map<String, Foo> foo(List<Object> objects) {
Map<String, Foo> map = {};
// OSR happens during '...objects' spread, and Foo instance is already
// allocated and remains on the stack during OSR.
// OSR Phi corresponding to that value is stored into 'foo' local and
// then loaded from it, but it doesn't correspond to 'foo' environment slot.
final foo = new Foo([...objects]);
map['hi'] = foo;
return map;
main() {
Expect.equals(30, foo(List.filled(30, Object()))['hi']!.data.length);