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base / unsafe_buffers_unittest.cc [blame]
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/compiler_specific.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
template <int A = 0, int B = 0>
UNSAFE_BUFFER_USAGE int uses_pointer_as_array(int* i) {
return UNSAFE_BUFFERS(i[1]);
}
TEST(UnsafeBuffers, Macro) {
int arr[] = {1, 2};
// Should compile even with -Wunsafe-buffer-usage.
int x = UNSAFE_BUFFERS(uses_pointer_as_array(arr));
EXPECT_EQ(x, 2);
// Should compile even with -Wunsafe-buffer-usage.
UNSAFE_BUFFERS({
uses_pointer_as_array(arr);
uses_pointer_as_array(arr);
});
// Commas don't break things. This comma is not wrapped in `()` which verifies
// the macro handles the comma correctly. `()` would hide the comma from the
// macro.
int y = UNSAFE_BUFFERS(uses_pointer_as_array<1, 1>(arr));
EXPECT_EQ(y, 2);
}
} // namespace