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b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
43 lines
1.1 KiB
Dart
43 lines
1.1 KiB
Dart
// Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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//
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// SharedObjects=ffi_test_functions
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// @dart = 2.9
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import 'dart:ffi';
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import "package:expect/expect.dart";
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import 'dylib_utils.dart';
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// Reuse struct definitions.
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import 'function_structs_by_value_generated_test.dart';
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void main() {
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testSizeOfC();
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testSizeOfDart();
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}
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final ffiTestFunctions = dlopenPlatformSpecific("ffi_test_functions");
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final sizeOfStruct3BytesPackedInt =
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ffiTestFunctions.lookupFunction<Uint64 Function(), int Function()>(
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"SizeOfStruct3BytesPackedInt");
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void testSizeOfC() {
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Expect.equals(3, sizeOfStruct3BytesPackedInt());
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}
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void testSizeOfDart() {
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// No packing needed to get to 3 bytes.
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Expect.equals(3, sizeOf<Struct3BytesHomogeneousUint8>());
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// Contents 3 bytes, but alignment forces it to be 4 bytes.
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Expect.equals(4, sizeOf<Struct3BytesInt2ByteAligned>());
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// Alignment gets the same content back to 3 bytes.
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Expect.equals(3, sizeOf<Struct3BytesPackedInt>());
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}
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