//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <system_error>
// class error_category
// const error_category& generic_category();
#include <system_error>
#include <cassert>
#include <string>
#include <cerrno>
#include "test_macros.h"
// See https://llvm.org/D65667
struct StaticInit {
const std::error_category* ec;
~StaticInit() {
std::string str = ec->name();
assert(str == "generic") ;
}
};
static StaticInit foo;
int main(int, char**)
{
{
const std::error_category& e_cat1 = std::generic_category();
std::string m1 = e_cat1.name();
assert(m1 == "generic");
}
// Test the result of message(int cond) when given a bad error condition
{
errno = E2BIG; // something that message will never generate
const std::error_category& e_cat1 = std::generic_category();
const std::string msg = e_cat1.message(-1);
// Exact message format varies by platform. We can't detect
// some of these (Musl in particular) using the preprocessor,
// so accept a few sensible messages. Newlib unfortunately
// responds with an empty message, which we probably want to
// treat as a failure code otherwise, but we can detect that
// with the preprocessor.
#if defined(_NEWLIB_VERSION)
const bool is_newlib = true;
#else
const bool is_newlib = false;
#endif
(void)is_newlib;
LIBCPP_ASSERT(msg.rfind("Error -1 occurred", 0) == 0 // AIX
|| msg.rfind("No error information", 0) == 0 // Musl
|| msg.rfind("Unknown error", 0) == 0 // Glibc
|| (is_newlib && msg.empty()));
assert(errno == E2BIG);
}
{
foo.ec = &std::generic_category();
std::string m2 = foo.ec->name();
assert(m2 == "generic");
}
return 0;
}