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view lib/stddef.in.h @ 14853:bdc85db78f47
strerror: drop strerror_r dependency
Since the errno module is responsible for introducing replacement
errno values, it should also be responsible for translating those
new values into strings. And by moving the replacements into a
file managed by the errno, we can then break the dependency between
strerror and strerror_r, so that strerror no longer drags in
multi-threading modules required by strerror_r.
Tested on glibc with:
gl_cv_header_errno_h_complete=no gl_cv_func_working_strerror=no \
gl_cv_func_strerror_r_works=no ./gnulib-tool --with-tests \
--test strerror strerror_r-posix
* lib/strerror_r.c (strerror_r): Move gnulib replacement strings...
* lib/strerror-override.c (strerror_override): ...to new file.
* lib/strerror-override.h: Add prototype.
* lib/strerror-impl.h: Delete.
* lib/strerror.c (strerror): New implementation.
* modules/errno (Files): Add new files.
(configure.ac): Compile new file as appropriate.
* modules/strerror (Files): Drop unused file.
(Depends-on): Drop strerror_r-posix.
* MODULES.html.sh: Document strerror_r-posix.
Requested by Sam Steingold.
Signed-off-by: Eric Blake <eblake@redhat.com>
| author | Eric Blake <eblake@redhat.com> |
|---|---|
| date | Tue, 24 May 2011 15:33:49 -0600 |
| parents | 5f709022a256 |
| children | 8250f2777afc |
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/* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues. Copyright (C) 2009-2011 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* Written by Eric Blake. */ /* * POSIX 2008 <stddef.h> for platforms that have issues. * <http://www.opengroup.org/susv3xbd/stddef.h.html> */ #if __GNUC__ >= 3 @PRAGMA_SYSTEM_HEADER@ #endif @PRAGMA_COLUMNS@ #if defined __need_wchar_t || defined __need_size_t \ || defined __need_ptrdiff_t || defined __need_NULL \ || defined __need_wint_t /* Special invocation convention inside gcc header files. In particular, gcc provides a version of <stddef.h> that blindly redefines NULL even when __need_wint_t was defined, even though wint_t is not normally provided by <stddef.h>. Hence, we must remember if special invocation has ever been used to obtain wint_t, in which case we need to clean up NULL yet again. */ # if !(defined _@GUARD_PREFIX@_STDDEF_H && defined _GL_STDDEF_WINT_T) # ifdef __need_wint_t # undef _@GUARD_PREFIX@_STDDEF_H # define _GL_STDDEF_WINT_T # endif # @INCLUDE_NEXT@ @NEXT_STDDEF_H@ # endif #else /* Normal invocation convention. */ # ifndef _@GUARD_PREFIX@_STDDEF_H /* The include_next requires a split double-inclusion guard. */ # @INCLUDE_NEXT@ @NEXT_STDDEF_H@ # ifndef _@GUARD_PREFIX@_STDDEF_H # define _@GUARD_PREFIX@_STDDEF_H /* On NetBSD 5.0, the definition of NULL lacks proper parentheses. */ #if @REPLACE_NULL@ # undef NULL # ifdef __cplusplus /* ISO C++ says that the macro NULL must expand to an integer constant expression, hence '((void *) 0)' is not allowed in C++. */ # if __GNUG__ >= 3 /* GNU C++ has a __null macro that behaves like an integer ('int' or 'long') but has the same size as a pointer. Use that, to avoid warnings. */ # define NULL __null # else # define NULL 0L # endif # else # define NULL ((void *) 0) # endif #endif /* Some platforms lack wchar_t. */ #if !@HAVE_WCHAR_T@ # define wchar_t int #endif # endif /* _@GUARD_PREFIX@_STDDEF_H */ # endif /* _@GUARD_PREFIX@_STDDEF_H */ #endif /* __need_XXX */