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// 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.
// This is a "No Compile Test" suite.
// http://dev.chromium.org/developers/testing/no-compile-tests
#include <type_traits>
#include "base/numerics/safe_conversions.h"
namespace base {
void StrictCastToNonSubsuming() {
// Should not be able to `strict_cast` to a non-subsuming type.
[[maybe_unused]] const auto a = strict_cast<int>(size_t{0}); // expected-error {{no matching function for call to 'strict_cast'}}
[[maybe_unused]] const auto b =
strict_cast<int>(std::integral_constant<size_t, 0>()); // expected-error {{no matching function for call to 'strict_cast'}}
[[maybe_unused]] const auto c = strict_cast<size_t>(0); // expected-error {{no matching function for call to 'strict_cast'}}
}
void StrictNumericConstruction() {
// Should not be able to construct `StrictNumeric` from a non-subsuming type.
[[maybe_unused]] StrictNumeric<size_t> a(1); // expected-error@*:* {{no matching function for call to 'strict_cast'}}
[[maybe_unused]] StrictNumeric<size_t> b{std::integral_constant<int, 1>()}; // expected-error@*:* {{no matching function for call to 'strict_cast'}}
[[maybe_unused]] StrictNumeric<int> c(size_t{1}); // expected-error@*:* {{no matching function for call to 'strict_cast'}}
[[maybe_unused]] StrictNumeric<int> d(1.0f); // expected-error@*:* {{no matching function for call to 'strict_cast'}}
// Can't use `std::integral_constant<non-integral T>` to construct
// `StrictNumeric`.
//
// TODO(pkasting): There's no particular reason we couldn't support this.
[[maybe_unused]] StrictNumeric<float> e{
std::integral_constant<float, 1.0f>()}; // expected-error@*:* {{no matching function for call to 'strict_cast'}}
}
} // namespace base
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