glibc/sysdeps/unix/sysv/linux/bits/statx.h
Emilio Cobos Álvarez bfa864e164 Don't use a custom wrapper macro around __has_include (bug 25189).
This causes issues when using clang with -frewrite-includes to e.g.,
submit the translation unit to a distributed compiler.

In my case, I was building Firefox using sccache.

See [1] for a reduced test-case since I initially thought this was a
clang bug, and [2] for more context.

Apparently doing this is invalid C++ per [cpp.cond], which mentions [3]:

> The #ifdef and #ifndef directives, and the defined conditional
> inclusion operator, shall treat __has_include and __has_cpp_attribute
> as if they were the names of defined macros.  The identifiers
> __has_include and __has_cpp_attribute shall not appear in any context
> not mentioned in this subclause.

[1]: https://bugs.llvm.org/show_bug.cgi?id=43982
[2]: https://bugs.llvm.org/show_bug.cgi?id=37990
[3]: http://eel.is/c++draft/cpp.cond#7.sentence-2

Change-Id: Id4b8ee19176a9e4624b533087ba870c418f27e60
2019-11-21 17:54:16 +01:00

40 lines
1.4 KiB
C

/* statx-related definitions and declarations. Linux version.
Copyright (C) 2018-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* This interface is based on <linux/stat.h> in Linux. */
#ifndef _SYS_STAT_H
# error Never include <bits/statx.h> directly, include <sys/stat.h> instead.
#endif
/* Use the Linux kernel header if available. */
/* Use "" to work around incorrect macro expansion of the
__has_include argument (GCC PR 80005). */
#ifdef __has_include
# if __has_include ("linux/stat.h")
# include "linux/stat.h"
# ifdef STATX_TYPE
# define __statx_timestamp_defined 1
# define __statx_defined 1
# endif
# endif
#endif
#include <bits/statx-generic.h>