* m4/largefile.m4 (gl_LARGEFILE): Set WINDOWS_64_BIT_ST_SIZE to 0 if
the mingw headers already define 'stat' appropriately.
* modules/largefile (Description): Clarify.
* doc/largefile.texi: New file.
* doc/gnulib.texi: Include it.
* doc/posix-headers/sys_types.texi: Update.
* m4/utime_h.m4: New file.
* lib/utime.in.h: New file.
* modules/utime-h: New file.
* doc/posix-headers/utime.texi: Mention the new module.
* tests/test-utime-h.c: New file.
* modules/utime-h-tests: New file.
Here st_ino is always 0, so change the definition of SAME_INODE so
that 1 means the two files are the same, 0 with st_ino != 0 means
they differ, and 0 with st_ino == 0 means we don’t know. Problem
reported by Bruno Haible (Bug#25146).
* doc/posix-headers/sys_stat.texi (sys/stat.h): Update.
* lib/same-inode.h (SAME_INODE): Return 0 on MinGW.
* doc/posix-headers/stdint.texi: Document this.
* lib/stdint.in.h: Add support for INTMAX_WIDTH. etc.
* m4/stdint.m4 (gl_STDINT_H): Require gl_LIMITS_H. Check for
support for INTMAX_WIDTH, etc. as well as for support for just C99.
* modules/stdint (Depends-on): Add limits-h.
(Makefile.am): Substitute HAVE_C99_STDINT_H.
* modules/stdint-tests (Depends-on): Add extensions, so that
INTMAX_MAX etc. are defined.
* tests/test-stdint.c: Verify the new macros.
glibc 2.25 is deprecating the namespace pollution of <sys/types.h>
injecting major(), minor(), and makedev() into the compilation
environment, with a warning that insists that users include
<sys/sysmacros.h> instead. However, because the expansion of
AC_HEADER_MAJOR didn't bother checking sys/sysmacros.h until
after probing whether sys/types.h pollutes the namespace, it was
not defining MAJOR_IN_SYSMACROS, with the result that code
compiled with -Werror chokes on the deprecation warnings because
it was not including sysmacros.h.
Backport the autoconf fix (see autoconf commit e17a30e98), so that
gnulib projects avoid the warnings even when using older autoconf.
* m4/sys_types_h.m4 (AC_HEADER_MAJOR): Replace broken version in
older autoconf.
* doc/posix-headers/sys_types.texi (sys/types.h): Document fix.
* doc/glibc-functions/gnu_dev_major.texi (gnu_dev_major): Likewise.
* doc/glibc-functions/gnu_dev_makedev.texi (gnu_dev_makedev): Likewise.
* doc/glibc-functions/gnu_dev_minor.texi (gnu_dev_minor): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Problem reported by Joseph Myers in:
https://gcc.gnu.org/ml/gcc-patches/2016-09/msg00340.html
* doc/posix-headers/stdalign.texi: Do not imply that C11 prohibits
alignof(S) where S is a structure containing a flexible array
member. The Gnulib substitute does not support this, but C11 does.
Problem reported by John E. Malmberg in: https://bugs.gnu.org/24300
* doc/posix-headers/limits.texi: Document the problem.
* lib/intprops.h (LLONG_MAX, LLONG_MIN) [__INT64_MAX]:
Define if not already defined.
Problem reported by David Seifert in:
http://lists.gnu.org/archive/html/bug-gnulib/2016-06/msg00005.html
* NEWS, doc/posix-headers/stdbool.texi (stdbool.h): Document this.
* m4/stdbool.m4 (AC_CHECK_HEADER_STDBOOL): Make the check
more-forgiving for C++, in that it requires only 'bool'. Be a bit
stricter about checking that bool and _Bool are compatible in C.
More platforms have similar bugs, and in the case of glibc on s390,
the bug is in SIZE_MAX instead of SSIZE_MAX.
* doc/posix-headers/stdint.texi (stdint.h): Document the bugs.
* doc/posix-headers/limits.texi (limits.h): Document the bugs.
Signed-off-by: Eric Blake <eblake@redhat.com>
* doc/posix-headers/stdalign.texi (stdalign.h):
Document the C11 restriction.
* lib/fts.c: Include stddef.h, for max_align_t.
(fts_alloc): Align using max_align_t, not FTSENT.
* modules/fts (Depends-on): Add stddef.
Portability problem reported by Kevin Cernekee in:
http://lists.gnu.org/archive/html/bug-gnulib/2015-02/msg00122.html
* doc/posix-headers/sys_resource.texi (sys/resource.h):
Mention the portability problem.
* lib/getdtablesize.c (RLIM_SAVED_CUR, RLIM_SAVED_MAX):
Define if not defined.
* m4/dup2.m4 (gl_FUNC_DUP2):
* m4/fcntl.m4 (gl_FUNC_FCNTL):
Likewise.
* modules/duplocale-tests (Depends-on): Add langinfo, as the header
is included by test-duplocale.c (but not by duplocale.c).
* modules/duplocale-tests (configure.ac): Check for monetary.h.
* tests/test-duplocale.c: Skip test if monetary.h is absent.
* doc/posix-headers/monetary.texi: Add Android to the list of
platforms missing monetary.h.
I just debugged a failure in sharutils-4.14.2-1 for using basename()
without including <libgen.h>. In the process, I realized that we
aren't doing a good job of explaining why we don't offer a libgen.h
replacement (it is useless because the only two functions it
provides are also useless).
* doc/posix-headers/libgen.texi (libgen.h): Refer to dirname module.
Signed-off-by: Eric Blake <eblake@redhat.com>
* doc/posix-headers/stddef.texi (stddef.h): Document max_align_t.
* lib/stddef.in.h (_@GUARD_PREFIX@_STDDEF_H) [__need_wint_t]:
Do not undef, as that might cause max_align_t to be defined twice.
Instead, change use to check for _GL_STDDEF_WINT_T too.
(max_align_t) [!HAVE_MAX_ALIGN_T]: New decl.
* m4/stddef_h.m4 (gl_STDDEF_H, gl_STDDEF_H_DEFAULTS):
Check for max_align_t.
* modules/stddef (stddef.h): Substitute HAVE_MAX_ALIGN_T.
* modules/stddef-tests (Depends-on): Add stdalign.
* tests/test-stddef.c: Test max_align_t.
This fixes some porting problems discovered when testing the latest
grep snapshot on AIX 7.1. I don't think if fixes any bugs
in grep but it could be important for other applications.
* doc/posix-functions/dup2.texi:
* doc/posix-functions/fcntl.texi:
* doc/posix-headers/fcntl.texi:
Document AIX bugs.
* lib/fcntl.in.h (O_CLOEXEC, O_NOFOLLOW, O_TTY_INIT) [_AIX]:
Define to 0 if outside 'int' range.
* m4/dup2.m4 (gl_FUNC_DUP2):
* m4/fcntl.m4 (gl_FUNC_FCNTL):
Check for getdtablesize. If it's available, test a value just
outside its range instead of testing 1000000. When cross-compiling,
guess that AIX will fail this improved test.
Dan Berrange reported compilation failure of libvirt on Fedora 20
when cross-compiling to mingw; the problem was traced to bogus
macros in the winpthreads <pthread.h> header shipped as part of
mingw-headers 3.0.
CC util/libvirt_util_la-virerror.lo
In file included from /usr/i686-w64-mingw32/sys-root/mingw/include/sys/time.h:10:0,
from ../gnulib/lib/sys/time.h:39,
from ../gnulib/lib/sys/select.h:117,
from util/virutil.h:31,
from util/virerror.c:35:
../gnulib/lib/time.h:468:21: error: expected identifier or '(' before '{' token
_GL_FUNCDECL_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
^
Gnulib's time.h was already working around the pthread.h pollution,
but now that newer mingw has started providing struct timespec,
the workaround was no longer being hit. Moving the pollution
workaround to the wrapper around the broken header solves the problem.
* lib/time.in.h: Move pthread workarounds...
* lib/pthread.in.h: ...here.
* m4/pthread.m4 (gl_PTHREAD_CHECK): Also build pthread.h when we
detect macro pollution on mingw.
* doc/posix-headers/pthread.texi (pthread.h): Document the problems.
Signed-off-by: Eric Blake <eblake@redhat.com>
I'm not quite ready to implement a replacement <sys/un.h> that
automatically works around this problem, since making the replacement
work for mingw seems much harder; so for now I'm just documenting
the issue I hit.
* doc/posix-headers/sys_un.texi (sys/un.h): Mention problem.
Signed-off-by: Eric Blake <eblake@redhat.com>
ISO C11 says that _Alignof's operand must be a parenthesized type.
Problem reported by Eli Zaretskii in
<http://lists.gnu.org/archive/html/emacs-devel/2013-03/msg00960.html>.
* doc/posix-headers/stdalign.texi (stdalign.h): Document this.
* m4/stdalign.m4 (gl_STDALIGN_H): Don't use _Alignof (expr).
O_PATH doesn't work with Linux kernel 3.6.5, as fchmod (fd, ...)
fails with errno == EBADF when fd is opened with O_PATH.
Reported by Jim Meyering in
<http://lists.gnu.org/archive/html/bug-gnulib/2012-11/msg00026.html>.
* doc/posix-headers/fcntl.texi (fcntl.h): Document this.
* lib/fcntl.in.h (O_EXEC, O_SEARCH) [O_PATH]: Default back to O_RDONLY.
Problem reported by Joel Brobecker in
<http://lists.gnu.org/archive/html/bug-gnulib/2012-10/msg00088.html>.
* doc/posix-headers/errno.texi (errno.h): Document this.
* lib/errno.in.h (EILSEQ, GNULIB_defined_EILSEQ) [!EILSEQ]: New macros.
* lib/strerror-override.c, lib/strerror-override.h (strerror_override):
Supply a string for EILSEQ.
* m4/errno_h.m4 (gl_HEADER_ERRNO_H): Check for EILSEQ.
Linux kernel 2.6.39 introduced O_PATH (see
<http://lwn.net/Articles/433854/>) and this is a better fallback
for O_SEARCH and O_EXEC than O_RDONLY, if O_PATH is available.
* doc/posix-headers/fcntl.texi (fcntl.h): Document this.
* lib/fcntl.in.h (O_EXEC, O_SEARCH) [O_PATH]: Default to O_PATH.
* lib/fcntl.in.h (O_ACCMODE):
* tests/test-fcntl-h.c (main):
Do not reject O_ACCMODE merely because it has more than the
minimal number of bits, as POSIX allows extensions here.
* doc/posix-headers/fcntl.texi (fcntl.h): Support O_IGNORE_CTTY,
O_NOLINK, and O_NOTRANS. These flags are nonzero on GNU/Hurd
systems. Discovered when using fcntl-h with GNU Emacs, which uses
O_IGNORE_CTTY. Fix misspelling of F_SETLKW.
* lib/fcntl.in.h (O_IGNORE_CTTY, O_NOLINK, O_NOTRANS):
Define to 0 if not already defined.
* tests/test-fcntl-h.c: Test these new flags.
Jasper Lievisse Adriaanse reported that NetBSD 5.2 also has
the same bug. Also, when writing configure tests that use
<net/if.h> (such as for 'struct ifreq'), it is useful to know
what pre-requisite headers are needed within that test.
* doc/posix-headers/net_if.texi: Add clarification.
Signed-off-by: Eric Blake <eblake@redhat.com>
OpenBSD's <net/if.h> is not self-contained; this should compile:
| #define _POSIX_C_SOURCE 200809L
| #include <net/if.h>
| struct if_nameindex i;
but fails with:
In file included from foo.c:2:
/usr/include/net/if.h:112: error: expected specifier-qualifier-list before 'u_int'
...
/usr/include/net/if.h:674: error: field 'dstaddr' has incomplete type
In file included from /usr/include/net/if.h:691,
from foo.c:2:
/usr/include/net/if_arp.h:79: error: field 'arp_pa' has incomplete type
/usr/include/net/if_arp.h:80: error: field 'arp_ha' has incomplete type
*** Error code 1
We already had a test program for systems with the if_* functions
(including OpenBSD); but in adding this module, I had to enhance
that test to also work on platforms like mingw where we are now
providing a new header.
* modules/net_if: New module, borrowing ideas from netinet_in.
* m4/net_if_h.m4: New file.
* lib/net_if.in.h: Likewise.
* doc/posix-headers/net_if.texi (net/if.h): Document it.
* MODULES.html.sh (lacking POSIX:2008): Likewise.
* tests/test-net_if.c: Make function checks conditional.
Reported by Jasper Lievisse Adriaanse <jasper@humppa.nl>.
Signed-off-by: Eric Blake <eblake@redhat.com>
* m4/stdnoreturn.m4 (gl_STDNORETURN_H): Avoid problems with
bleeding-edge GCC that complains about 'int _Noreturn foo (void);'.
Problem reported by Jim Meyering in
<http://lists.gnu.org/archive/html/bug-gnulib/2012-08/msg00121.html>.
Also, rename the 'test' function to a void a clash with the
already-supplied 'main' function; this fixes a bug that incorrectly
rejected GCC 4.7.1's <stdnoreturn.h>.
* doc/posix-headers/stdnoreturn.texi (stdnoreturn.h):
Document GCC problem.
* m4/sys_time_h.m4 (gl_HEADER_SYS_TIME_H_BODY): Allow struct
timeval even if tv_sec is wider than time_t. This allows
OpenBSD 5.1 amd64 and fixes an Emacs porting glitch with utimens.c,
as without this patch gnulib replaces struct timeval
and OpenBSD futimes therefore has a type mismatch.
* doc/posix-headers/sys_time.texi: Mention this.
* m4/errno_h.m4 (gl_HEADER_ERRNO_H): Test also EOWNERDEAD and
ENOTRECOVERABLE.
* lib/errno.in.h (EOWNERDEAD, ENOTRECOVERABLE): Define on all
platforms.
* lib/strerror-override.c (strerror_override): Conditionalize the
EOWNERDEAD, ENOTRECOVERABLE handling on GNULIB_defined_EOWNERDEAD.
* lib/strerror-override.h (strerror_override): Declare also if
GNULIB_defined_EOWNERDEAD is defined.
* tests/test-errno.c (e130, e131): New variables.
* doc/posix-headers/errno.texi: Mention the status for EOWNERDEAD,
ENOTRECOVERABLE.
Reported by Paolo Bonzini.
* m4/largefile.m4 (gl_LARGEFILE): New macro.
* modules/largefile (configure.ac): Require gl_LARGEFILE.
* lib/sys_types.in.h (off_t) [WINDOWS_64_BIT_OFF_T]: Define to a 64-bit
type.
* m4/sys_types_h.m4 (gl_SYS_TYPES_H): Set WINDOWS_64_BIT_OFF_T.
* modules/sys_types (Makefile.am): Substitute WINDOWS_64_BIT_OFF_T.
* doc/posix-headers/sys_types.texi: Mention the effect of the
'largefile' module.
* lib/fcntl.in.h: Add comments about off_t.
* modules/fcntl-h (Depends-on): Add sys_types.
* lib/unistd.in.h [WINDOWS_64_BIT_OFF_T]: Include <sys/types.h>.
(ftruncate): Replace it if REPLACE_FTRUNCATE is 1.
* m4/unistd_h.m4 (gl_UNISTD_H): Require gl_SYS_TYPES_H.
(gl_UNISTD_H_DEFAULTS): Initialize REPLACE_FTRUNCATE.
* modules/unistd (Depends-on): Add sys_types.
(Makefile.am): Substitute WINDOWS_64_BIT_OFF_T, REPLACE_FTRUNCATE.
* lib/lseek.c (rpl_lseek) [_GL_WINDOWS_64_BIT_OFF_T]: Use _lseeki64
instead of lseek.
* m4/lseek.m4 (gl_FUNC_LSEEK): Require gl_SYS_TYPES_H. Set
REPLACE_LSEEK if WINDOWS_64_BIT_OFF_T is 1.
* modules/lseek (Depends-on): Add sys_types.
* lib/ftruncate.c: Put under GPLv3+. Include <windows.h>,
msvc-nothrow.h.
(SetFileSize): New function.
(ftruncate) [_GL_WINDOWS_64_BIT_OFF_T]: New implementation.
* m4/ftruncate.m4 (gl_FUNC_FTRUNCATE): Set REPLACE_FTRUNCATE on Windows
if Large File Support is requested.
* modules/ftruncate (configure.ac): Consider REPLACE_FTRUNCATE.
(Depends-on): Add sys_types, msvc-nothrow. Update conditions.
* lib/stdio.in.h: Add comments about off_t.
* modules/stdio (Depends-on): Add sys_types.
* lib/ftello.c [_GL_WINDOWS_64_BIT_OFF_T]: Use _ftelli64 or ftello64
instead of ftello.
* m4/ftello.m4 (gl_FUNC_FTELLO): Require gl_SYS_TYPES_H. Set
REPLACE_FTELLO if WINDOWS_64_BIT_OFF_T is 1.
(gl_PREREQ_FTELLO): New macro.
* modules/ftello (Depends-on): Add sys_types.
(configure.ac): Incoke gl_PREREQ_FTELLO.
* lib/fseeko.c [_GL_WINDOWS_64_BIT_OFF_T]: Use _fseeki64 or fseeko64
instead of fseeko.
* m4/fseeko.m4 (gl_FUNC_FSEEKO): Require gl_SYS_TYPES_H. Set
REPLACE_FSEEKO if WINDOWS_64_BIT_OFF_T is 1.
(gl_PREREQ_FSEEKO): New macro.
* modules/fseeko (Depends-on): Add sys_types.
(configure.ac): Invoke gl_PREREQ_FSEEKO.
* lib/sys_stat.in.h: Add comments about off_t.
(stat, fstat) [WINDOWS_64_BIT_ST_SIZE]: Define to variants that use a
64-bit integer for st_size in 'struct stat'.
* m4/sys_stat_h.m4 (gl_HEADER_SYS_STAT_H): Set WINDOWS_64_BIT_ST_SIZE.
Define _GL_WINDOWS_64_BIT_ST_SIZE.
* modules/sys_stat (Depends-on): Add sys_types.
(Makefile.am): Substitute WINDOWS_64_BIT_ST_SIZE.
* lib/stat.c (stat) [_GL_WINDOWS_64_BIT_ST_SIZE]: Define to _stati64
instead of stat or _stat.
* lib/fstat.c [_GL_WINDOWS_64_BIT_ST_SIZE]: Use _fstati64 and
'struct _stati64' instead of fstat and 'struct stat'.
* m4/fstat.m4 (gl_FUNC_FSTAT): Require gl_HEADER_SYS_STAT_H. Set
REPLACE_FSTAT if WINDOWS_64_BIT_ST_SIZE is 1.
Reported by Ray Satiro <raysatiro@yahoo.com>.
* lib/sys_resource.in.h: New file.
* m4/sys_resource_h.m4: New file.
* modules/sys_resource: New file.
* doc/posix-headers/sys_resource.texi: Mention the new module.
* m4/locale_h.m4 (gl_LOCALE_H): Set REPLACE_STRUCT_LCONV to 1 if
'struct lconv' does not contain int_p_cs_precedes.
* tests/test-locale.c (main): Check that 'struct lconv' is complete.
* doc/posix-headers/locale.texi: Update.
* lib/locale.in.h (lconv): Override if REPLACE_STRUCT_LCONV is 1.
* m4/locale_h.m4 (gl_LOCALE_H): Set REPLACE_STRUCT_LCONV to 1 if
'struct lconv' does not even contain decimal_point.
(gl_LOCALE_H_DEFAULTS): Initialize REPLACE_STRUCT_LCONV.
* modules/locale (Makefile.am): Substitute REPLACE_STRUCT_LCONV.
* tests/test-locale.c (main): Check that 'struct lconv' is complete.
* doc/posix-headers/locale.texi: Mention the problems with
'struct lconv'.
Reported by Gianluigi Tiesi <sherpya@netfarm.it>.
* doc/posix-headers/sys_types.texi (sys/types.h):
* doc/posix-headers/time.texi (time.h):
Mention that glibc x32 does not conform to POSIX in a couple of
areas related to integer widths.
tests-termios.c was failing on more than just cygwin.
* doc/posix-headers/termios.texi (termios.h): Mention problem.
* lib/termios.in.h (include): Ensure pid_t on all platforms, not
just when building tcgetsid.
Signed-off-by: Eric Blake <eblake@redhat.com>
* lib/math.in.h (HUGE_VAL, HUGE_VALF, HUGE_VALL): Define fallbacks.
* tests/test-math.c: Include macros.h. Check that HUGE_VAL, HUGE_VALF,
HUGE_VALL are defined.
(numeric_equald): Renamed from numeric_equal.
(numeric_equalf, numeric_equall): New functions.
(main): Check also HUGE_VALF, HUGE_VALL.
* modules/math-tests (Files): Add tests/macros.h.
* doc/posix-headers/math.texi: Document the problems with HUGE_VALF and
HUGE_VALL.
MSVC standard headers use __declspec(noreturn), so #define noreturn
to empty on that platform. Reported by Bruno Haible in
<http://lists.gnu.org/archive/html/bug-gnulib/2012-02/msg00152.html>.
* lib/stdnoreturn.in.h (noreturn): Define to empty on MSVC.
* doc/posix-headers/stdnoreturn.texi (stdnoreturn.h): Document this.
