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// Copyright (c) 2019, 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 test program for testing dart:ffi primitive data pointers.
//
// These mallocs trigger an asan alarm, so these tests are in a separate file
// which is excluded in asan mode.
library FfiTest;
import 'dart:ffi' as ffi;
import 'dart:ffi' show Pointer;
import "package:expect/expect.dart";
void main() {
testPointerAllocateTooLarge();
testPointerAllocateNegative();
}
void testPointerAllocateTooLarge() {
// Try to allocate something that doesn't fit in 64 bit address space.
int maxInt = 9223372036854775807; // 2^63 - 1
Expect.throws(() => Pointer<ffi.Int64>.allocate(count: maxInt));
// Try to allocate almost the full 64 bit address space.
int maxInt1_8 = 1152921504606846975; // 2^60 -1
Expect.throws(() => Pointer<ffi.Int64>.allocate(count: maxInt1_8));
}
void testPointerAllocateNegative() {
// Passing in -1 will be converted into an unsigned integer. So, it will try
// to allocate SIZE_MAX - 1 + 1 bytes. This will fail as it is the max amount
// of addressable memory on the system.
Expect.throws(() => Pointer<ffi.Int8>.allocate(count: -1));
}