James Y Knight c3656afdf1
Revert "[libc++] Introduce ABI sensitive areas to avoid requiring _LIBCPP_HIDE_FROM_ABI everywhere (#131156)" (#141756)
This reverts commit c861fe8a71e64f3d2108c58147e7375cd9314521.

Unfortunately, this use of hidden visibility attributes causes
user-defined specializations of standard-library types to also be marked
hidden by default, which is incorrect. See discussion thread on #131156.

...and also reverts the follow-up commits:

Revert "[libc++] Add explicit ABI annotations to functions from the block runtime declared in <__functional/function.h> (#140592)"
This reverts commit 3e4c9dc299c35155934688184319d391b298fff7.

Revert "[libc++] Make ABI annotations explicit for windows-specific code (#140507)"
This reverts commit f73287e623a6c2e4a3485832bc3e10860cd26eb5.

Revert "[libc++][NFC] Replace a few "namespace std" with the correct macro (#140510)"
This reverts commit 1d411f27c769a32cb22ce50b9dc4421e34fd40dd.
2025-05-28 12:04:51 -04:00

58 lines
2.1 KiB
C++

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___SYSTEM_ERROR_SYSTEM_ERROR_H
#define _LIBCPP___SYSTEM_ERROR_SYSTEM_ERROR_H
#include <__config>
#include <__system_error/error_category.h>
#include <__system_error/error_code.h>
#include <__verbose_abort>
#include <stdexcept>
#include <string>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
class _LIBCPP_EXPORTED_FROM_ABI system_error : public runtime_error {
error_code __ec_;
public:
system_error(error_code __ec, const string& __what_arg);
system_error(error_code __ec, const char* __what_arg);
system_error(error_code __ec);
system_error(int __ev, const error_category& __ecat, const string& __what_arg);
system_error(int __ev, const error_category& __ecat, const char* __what_arg);
system_error(int __ev, const error_category& __ecat);
_LIBCPP_HIDE_FROM_ABI system_error(const system_error&) _NOEXCEPT = default;
~system_error() _NOEXCEPT override;
_LIBCPP_HIDE_FROM_ABI const error_code& code() const _NOEXCEPT { return __ec_; }
};
// __ev is expected to be an error in the generic_category domain (e.g. from
// errno, or std::errc::*), not system_category (e.g. from windows syscalls).
[[__noreturn__]] _LIBCPP_EXPORTED_FROM_ABI void __throw_system_error(int __ev, const char* __what_arg);
[[__noreturn__]] _LIBCPP_HIDE_FROM_ABI inline void __throw_system_error(error_code __ec, const char* __what_arg) {
#if _LIBCPP_HAS_EXCEPTIONS
throw system_error(__ec, __what_arg);
#else
_LIBCPP_VERBOSE_ABORT(
"system_error was thrown in -fno-exceptions mode with error %i and message \"%s\"", __ec.value(), __what_arg);
#endif
}
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___SYSTEM_ERROR_SYSTEM_ERROR_H