1// Copyright 2024 The Chromium Authors 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// This is a "No Compile Test" suite. 6// http://dev.chromium.org/developers/testing/no-compile-tests 7 8#include "base/containers/adapters.h" 9#include "base/containers/span.h" 10 11#include <utility> 12#include <vector> 13 14namespace base { 15 16void DanglingInRangeBasedForLoop() { 17 // This is not safe prior to C++23, since the temporary vector does not have 18 // its lifetime extended. 19 for (int&& x : RangeAsRvalues(std::vector({1, 2, 3}))) { // expected-error {{temporary implicitly bound to local reference will be destroyed at the end of the full-expression}} 20 x *= x; 21 } 22 for (int& x : Reversed(std::vector({1, 2, 3}))) { // expected-error {{temporary implicitly bound to local reference will be destroyed at the end of the full-expression}} 23 x *= x; 24 } 25} 26 27void RangeAsRvaluesRequiresNonBorrowedRange() { 28 std::vector<int> v; 29 RangeAsRvalues(v); // expected-error {{no matching function for call to 'RangeAsRvalues'}} 30} 31 32void RangeAsRvaluesRequiresMutableRange() { 33 // A non-mutable range can't be moved from. 34 const std::vector<int> v; 35 RangeAsRvalues(std::move(v)); // expected-error {{no matching function for call to 'RangeAsRvalues'}} 36} 37 38} // namespace base 39