blob: cd050139b8a0b8bcdad67743a78021d42fbf12b0 [file] [log] [blame] [edit]
// 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.
// 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;
}
};
}
}