mirror of
https://github.com/dart-lang/sdk
synced 2024-11-02 08:20:31 +00:00
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>
40 lines
1.1 KiB
Dart
40 lines
1.1 KiB
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
|
|
|
|
// Regression test for https://github.com/flutter/flutter/issues/79441.
|
|
|
|
import 'dart:ffi';
|
|
|
|
// FFI signature
|
|
typedef _dart_memset = void Function(Pointer<Uint8>, int, int);
|
|
typedef _c_memset = Void Function(Pointer<Uint8>, Int32, IntPtr);
|
|
|
|
_dart_memset fbMemset;
|
|
|
|
void _fallbackMemset(Pointer<Uint8> ptr, int byte, int size) {
|
|
final bytes = ptr.cast<Uint8>();
|
|
for (var i = 0; i < size; i++) {
|
|
bytes[i] = byte;
|
|
}
|
|
}
|
|
|
|
void main() {
|
|
try {
|
|
fbMemset = DynamicLibrary.process()
|
|
.lookupFunction<_c_memset, _dart_memset>('memset');
|
|
} catch (_) {
|
|
// This works:
|
|
// fbMemset = _fallbackMemset;
|
|
|
|
// This doesn't: /aot/precompiler.cc: 2761: error: unreachable code
|
|
fbMemset = (Pointer<Uint8> ptr, int byte, int size) {
|
|
final bytes = ptr.cast<Uint8>();
|
|
for (var i = 0; i < size; i++) {
|
|
bytes[i] = byte;
|
|
}
|
|
};
|
|
}
|
|
}
|