blob: 1d43ff6711cdfed1dfd01558090ac9568b73f004 [file] [log] [blame]
// -*- C++ -*-
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// REQUIRES: clang
// XFAIL: *
// This tests is meant to demonstrate an existing ABI bug between the
// C++03 and C++11 implementations of std::function. It is not a real test.
// RUN: %cxx -c %s -o %t.first.o %flags %compile_flags -std=c++03 -g
// RUN: %cxx -c %s -o %t.second.o -DWITH_MAIN %flags %compile_flags -g -std=c++11
// RUN: %cxx -o %t.exe %t.first.o %t.second.o %flags %link_flags -g
// RUN: %run
#include <functional>
#include <cassert>
typedef std::function<void(int)> Func;
Func CreateFunc();
#ifndef WITH_MAIN
// In C++03, the functions call operator, which is a part of the vtable,
// is defined as 'void operator()(int)', but in C++11 it's
// void operator()(int&&)'. So when the C++03 version is passed to C++11 code
// the value of the integer is interpreted as its address.
void test(int x) {
assert(x == 42);
Func CreateFunc() {
Func f(&test);
return f;
int main() {
Func f = CreateFunc();