llvm-project/libcxx/include/cerrno

// -*- 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_CERRNO
#define _LIBCPP_CERRNO

/*
    cerrno synopsis

Macros:

    EDOM
    EILSEQ  // C99
    ERANGE
    errno

*/

#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#  include <__cxx03/cerrno>
#else
#  include <__config>

#  include <errno.h>

#  ifndef _LIBCPP_ERRNO_H
#   error <cerrno> tried including <errno.h> but didn't find libc++'s <errno.h> header. \
          This usually means that your header search paths are not configured properly. \
          The header search paths should contain the C++ Standard Library headers before \
          any C Standard Library, and you are probably using compiler flags that make that \
          not be the case.
#  endif

#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#    pragma GCC system_header
#  endif

// LWG3869 Deprecate std::errc constants related to UNIX STREAMS
//
// This LWG issue deprecates the POSIX macros ENODATA, ENOSR, ENOSTR, and ETIME. These were
// deprecated in libc++ in https://github.com/llvm/llvm-project/pull/80542.
// Based on the post commit feedback the macro are no longer deprecated.
// Instead libc++ leaves the deprecation to the provider of errno.h.
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_CERRNO