runtime/tests/vm/dart_2/deopt/allocate_array_test.dart

// Copyright (c) 2021, 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.

// @dart = 2.9

// VMOptions=--disable-dart-dev --no-inline-alloc --use-slow-path --deoptimize-on-runtime-call-every=1 --deterministic --optimization-counter-threshold=1 --deoptimize-on-runtime-call-name-filter=AllocateArray

main() {
  for (int i = 0; i < 20; ++i) {
    final list = foo(1);
    if (list[0] != 42) throw 'a';
  }
}

@pragma('vm:never-inline')
List foo(int a) {
  return List<dynamic>.filled(a, null)..[0] = 42;
}