| Commit message (Collapse) | Author | Age | Files | Lines |
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The lgamma (and likewise lgammaf, lgammal) function wrongly sets the
signgam variable even when building for strict ISO C conformance
(-std=c99 / -std=c11), although the user may define such a variable
and it's only in the implementation namespace for POSIX with XSI
extensions enabled.
Following discussions starting at
<https://sourceware.org/ml/libc-alpha/2013-04/msg00767.html> and
<https://sourceware.org/ml/libc-alpha/2015-10/msg00844.html>, it seems
that the safest approach for fixing this particular issue is for
signgam to become a weak alias for a newly exported symbol __signgam,
with the library functions only setting __signgam, at which point
static linker magic will preserve the alias for newly linked binaries
that refer to the library's signgam rather than defining their own,
while breaking the alias for programs that define their own signgam,
with new symbol versions for lgamma functions and with compat symbols
for existing binaries that set both signgam and __signgam.
This patch implements that approach for the fix. signgam is made into
a weak alias. The four symbols __signgam, lgamma, lgammaf, lgammal
get new symbol versions at version GLIBC_2.23, with the existing
versions of lgamma, lgammaf and lgammal becoming compat symbols.
When the compat versions are built, gamma, gammaf and gammal are
aliases for the compat versions (i.e. always set signgam); this is OK
as they are not ISO C functions, and avoids adding new symbol versions
for them unnecessarily. When the compat versions are not built
(i.e. for static linking and for future glibc ports), gamma, gammaf
and gammal are aliases for the new versions that set __signgam. The
ldbl-opt versions are updated accordingly.
The lgamma wrappers are adjusted so that the same source files,
included from different files with different definitions of
USE_AS_COMPAT, can build either the new versions or the compat
versions. Similar changes are made to the ia64 versions (untested).
Tests are added that the lgamma functions do not interfere with a user
variable called signgam for ISO C, with various choices for the size
of that variable, whether it is initialized, and for static and
dynamic linking. The conformtest whitelist entry is removed as well.
Tested for x86_64, x86, mips64 and powerpc, including looking at
objdump --dynamic-syms output to make sure the expected sets of
symbols were aliases. Also spot-tested that a binary built with old
glibc works properly (i.e. gets signgam set) when run with new glibc.
[BZ #15421]
* sysdeps/ieee754/s_signgam.c (signgam): Rename to __signgam,
initialize with 0 and define as weak alias of __signgam.
* include/math.h [!_ISOMAC] (__signgam): Declare.
* math/Makefile (libm-calls): Add w_lgamma_compat.
(tests): Add test-signgam-uchar, test-signgam-uchar-init,
test-signgam-uint, test-signgam-uint-init, test-signgam-ullong and
test-signgam-ullong-init.
(tests-static): Add test-signgam-uchar-static,
test-signgam-uchar-init-static, test-signgam-uint-static,
test-signgam-uint-init-static, test-signgam-ullong-static and
test-signgam-ullong-init-static.
(CFLAGS-test-signgam-uchar.c): New variable.
(CFLAGS-test-signgam-uchar-init.c): Likewise.
(CFLAGS-test-signgam-uchar-static.c): Likewise.
(CFLAGS-test-signgam-uchar-init-static.c): Likewise.
(CFLAGS-test-signgam-uint.c): Likewise.
(CFLAGS-test-signgam-uint-init.c): Likewise.
(CFLAGS-test-signgam-uint-static.c): Likewise.
(CFLAGS-test-signgam-uint-init-static.c): Likewise.
(CFLAGS-test-signgam-ullong.c): Likewise.
(CFLAGS-test-signgam-ullong-init.c): Likewise.
(CFLAGS-test-signgam-ullong-static.c): Likewise.
(CFLAGS-test-signgam-ullong-init-static.c): Likewise.
* math/Versions (libm): Add GLIBC_2.23.
* math/lgamma-compat.h: New file.
* math/test-signgam-main.c: Likewise.
* math/test-signgam-uchar-init-static.c: Likewise.
* math/test-signgam-uchar-init.c: Likewise.
* math/test-signgam-uchar-static.c: Likewise.
* math/test-signgam-uchar.c: Likewise.
* math/test-signgam-uint-init-static.c: Likewise.
* math/test-signgam-uint-init.c: Likewise.
* math/test-signgam-uint-static.c: Likewise.
* math/test-signgam-uint.c: Likewise.
* math/test-signgam-ullong-init-static.c: Likewise.
* math/test-signgam-ullong-init.c: Likewise.
* math/test-signgam-ullong-static.c: Likewise.
* math/test-signgam-ullong.c: Likewise.
* math/w_lgamma.c: Rename to w_lgamma_main.c and replace by
wrapper of w_lgamma_main.c.
* math/w_lgamma_compat.c: New file.
* math/w_lgamma_compatf.c: Likewise.
* math/w_lgamma_compatl.c: Likewise.
* math/w_lgamma_main.c: New file. Based on w_lgamma.c. Include
<lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support
defining compatibility symbols.
(__lgamma): Change to LGFUNC (__lgamma). Use CALL_LGAMMA.
* math/w_lgammaf.c: Rename to w_lgammaf_main.c and replace by
wrapper of w_lgammaf_main.c.
* math/w_lgammaf_main.c: New file. Based on w_lgammaf.c. Include
<lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support
defining compatibility symbols.
(__lgammaf): Change to LGFUNC (__lgammaf). Use CALL_LGAMMA.
* math/w_lgammal.c: Rename to w_lgammal_main.c and replace by
wrapper of w_lgammal_main.c.
* math/w_lgammal_main.c: New file. Based on w_lgammal.c. Include
<lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support
defining compatibility symbols.
(__lgammal): Change to LGFUNC (__lgammal). Use CALL_LGAMMA.
* sysdeps/ia64/fpu/lgamma-compat.h: New file.
* sysdeps/ia64/fpu/w_lgamma.c: Move to ....
* sysdeps/ia64/fpu/w_lgamma_main.c: ...here. Include
<lgamma-compat.h>.
(__ieee754_lgamma): Change to LGFUNC (lgamma). Use CALL_LGAMMA.
(__ieee754_gamma): Define as alias.
* sysdeps/ia64/fpu/w_lgammaf.c: Move to ....
* sysdeps/ia64/fpu/w_lgammaf_main.c: ...here. Include
<lgamma-compat.h>.
(__ieee754_lgammaf): Change to LGFUNC (lgammaf). Use CALL_LGAMMA.
(__ieee754_gammaf): Define as alias.
* sysdeps/ia64/fpu/w_lgammal.c: Move to ....
* sysdeps/ia64/fpu/w_lgammal_main.c: ...here. Include
<lgamma-compat.h>.
(__ieee754_lgammal): Change to LGFUNC (lgammal). Use CALL_LGAMMA.
(__ieee754_gammal): Define as alias.
* sysdeps/ieee754/ldbl-opt/w_lgamma.c: Move to ....
* sysdeps/ieee754/ldbl-opt/w_lgamma_compat.c: ...here. Include
<math/w_lgamma_compat.c>.
[LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (__lgammal_dbl_compat):
Define as alias of __lgamma_compat and use in defining lgammal.
* sysdeps/ieee754/ldbl-opt/w_lgammal.c: Move to ....
* sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c: ...here. Include
<math/lgamma-compat.h> and <math/w_lgamma_compatl.c>.
(USE_AS_COMPAT): New macro.
(LGAMMA_OLD_VER): Undefine and redefine.
(lgammal): Do not define here.
(gammal): Only define here if [GAMMA_ALIAS].
* conform/linknamespace.pl (@whitelist): Remove signgam.
* sysdeps/nacl/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
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This patch makes linknamespace.pl require weak undefined symbols to be
within the standard namespace. (It remains the case that
linknamespace.pl does not look for definitions of such symbols or
require symbols used in those definitions to be within the standard
namespace.)
Tested for x86_64 and x86.
* conform/linknamespace.pl: Require weak undefined symbols to be
in the standard namespace.
(%strong_syms): Rename to %seen_syms.
(%strong_seen): Rename to %seen_where.
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glibc supports the deprecated matherr hook for math error reporting. The
conform tests take this into consideration and whitelist this symbol when
running linknamespace tests.
The ia64 libm code has long provided two additional hooks in this space:
matherrf (for floats)
matherrl (for long doubles)
Which causes the conform tests to fail with chains that all look like:
[initial] __atan2 ->
[libm.a(e_atan2.o)] __libm_error_support ->
[libm.a(libm_error.o)] matherrf
We can't (losslessly) redirect existing usage of these funcs to matherr
because the structure passed in is different -- matherr uses a struct with
doubles while matherrf/matherrl use floats and long doubles respectively.
Plus, this has been part of the exported ABI since glibc-2.2.3, so it
doesn't feel right to change it so late.
Until we get around to obsoleting matherr entirely, whitelist these two
additional ia64 symbols.
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This patch adds re_syntax_options (bug 18442) to the set of symbols
that are whitelisted in the linknamespace tests because, while the
references to them are genuine bugs that should be fixed, the
involvement of data symbols makes them harder to fix than most such
bugs.
Tested for x86_64 and x86.
* conform/linknamespace.pl (@whitelist): Add re_syntax_options.
* conform/Makefile (test-xfail-UNIX98/regex.h/linknamespace):
Remove variable.
(test-xfail-XOPEN2K/regex.h/linknamespace): Likewise.
(test-xfail-POSIX2008/regex.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/regex.h/linknamespace): Likewise.
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For mips16, some of the linknamespace tests were failing because
[MIPS16] annotations in readelf output were wrongly interpreted as
falling in the symbol index field, meaning symbol index values were
wrongly interpreted as symbol names and such names as 1 and 2 then
resulted in namespace test failures.
This patch fixes this by removing the annotations for such
architecture-specific st_other bits before splitting the readelf
output into fields. Tested for x86_64 and mips16.
* conform/linknamespace.pl (list_syms): Remove \[.*?\] before
splitting into fields.
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This patch addresses one known caveat in the linknamespace tests: with
this patch they will now only look for definitions of symbols in
relevant libraries, meaning that librt and libpthread are not checked
for ISO C standards, XPG3 and XPG4.
In particular, this means that if __pthread_initialize_minimal is
somehow brought in for one of those standards, the definition from
libc-tls.o will be considered instead of that from libpthread, so
avoiding bringing in lots of other libpthread symbols. This should
address some of the failures reported by Carlos in
<https://sourceware.org/ml/libc-alpha/2014-11/msg00882.html>, where
__pointer_chk_guard_local brought in __pthread_initialize_minimal.
Tested for x86_64. The removal of one XFAIL for XPG4 actually shows
up a header bug (shm_open should not be declared for XPG4 - the
namespace issue was for symbols brought in by shm_open, which is no
longer found at all now librt isn't searched; I've filed bug 17663 for
the header bug, though it would show up eventually anyway in the
course of review of conform/ data against XPG4).
Committed.
* conform/Makefile (linknamespace-symlist-stdlibs-base): New
variable.
(linknamespace-symlist-stdlibs-tests): Likewise.
(tests-special): Append $(linknamespace-symlist-stdlibs-tests)
instead of $(objpfx)symlist-stdlibs.
(linknamespace-libs-isoc): New variable.
(linknamespace-libs): Use $(linknamespace-libs-isoc).
(linknamespace-libs-ISO): New variable.
(linknamespace-libs-ISO99): Likewise.
(linknamespace-libs-ISO11): Likewise.
(linknamespace-libs-XPG3): Likewise.
(linknamespace-libs-XPG4): Likewise.
(linknamespace-libs-POSIX): Likewise.
(linknamespace-libs-UNIX98): Likewise.
(linknamespace-libs-XOPEN2K): Likewise.
(linknamespace-libs-POSIX2008): Likewise.
(linknamespace-libs-XOPEN2K8): Likewise.
($(objpfx)symlist-stdlibs): Replace by
$(linknamespace-symlist-stdlibs-tests). Use
$(linknamespace-libs-$*) as set of libraries.
($(linknamespace-header-tests)): Update dependencies. Use
$(objpfx)symlist-stdlibs-$$std for --libsyms argument.
(test-xfail-XPG4/sys/mman.h/linknamespace): Remove.
* conform/linknamespace.pl: Remove comment about considering
definitions of symbols from irrelevant libraries.
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One thing we currently try to ensure manually is that glibc is
namespace-clean for static linking; that is, if you only use features
from a particular standard (including the set of features exposed by
headers given feature test macros such as _DEFAULT_SOURCE that don't
correspond to any written standard), the library objects brought in by
the static linker will not define or use (strong) names that are
reserved to the user in that standard.
This patch implements automatic tests for this, using the same set of
standards as for the header conformance tests (it would, however, be
easy to add more standards for this testing, without them needing to
have the definitions of expected header contents for the header
tests). The tests are based on the functions declared in each header,
as extracted using GCC's -aux-info option. The following comment from
linknamespace.pl explains the caveats around this approach:
Here's an example of the output for ISO (C90) assert.h, from before my
recent fixes and whitelisting of cases that seem more complicated to
fix:
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)] __get_nprocs -> [libc.a(getsysstats.o)] fgets_unlocked
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres -> [libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max -> [libc.a(tzset.o)] __tzfile_compute -> [libc.a(tzfile.o)] fileno
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres -> [libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max -> [libc.a(tzset.o)] __tzfile_compute -> [libc.a(tzfile.o)] fread_unlocked
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres -> [libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max -> [libc.a(tzset.o)] __tzfile_compute -> [libc.a(tzfile.o)] ftello
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)] malloc_info
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_default_locale_path -> [libc.a(findlocale.o)] memmem
[initial] __assert_perror_fail -> [libc.a(assert-perr.o)] __strerror_r -> [libc.a(_strerror.o)] mempcpy
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] _nl_find_domain -> [libc.a(finddomain.o)] _nl_expand_alias -> [libc.a(localealias.o)] qsort -> [libc.a(msort.o)] qsort_r
[initial] __assert_fail -> [libc.a(assert.o)] _dl_pagesize -> [libc.a(dl-support.o)] __rawmemchr -> [libc.a(rawmemchr.o)] rawmemchr
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __getcwd -> [libc.a(getcwd.o)] rewinddir
[initial] __assert_fail -> [libc.a(assert.o)] stderr
[initial] __assert_fail -> [libc.a(assert.o)] stderr -> [libc.a(stdio.o)] stdin
[initial] __assert_fail -> [libc.a(assert.o)] stderr -> [libc.a(stdio.o)] stdout
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext -> [libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] stpcpy
[initial] __assert_fail -> [libc.a(assert.o)] __fxprintf -> [libc.a(fxprintf.o)] _IO_vfprintf -> [libc.a(vfprintf.o)] __printf_fp -> [libc.a(printf_fp.o)] wmemset
Of the 161 XFAILs, seven are the inevitable varargs.h and ndbm.h
failures; I think the remaining 154 mostly represent genuine bugs in
glibc that should mostly be straightforward to fix (probably rather
fewer than 154 bugs - issues generally affect multiple headers, for
multiple standards). (When fixing, of course you need to file a bug
in Bugzilla, and check for the possibility that the header
conditionals are what's incorrect - that the first listed symbol
shouldn't have been declared, or that the symbol finally brought in
should have been declared.)
* conform/GlibcConform.pm: New file.
* conform/conformtest.pl: Use GlibcConform module.
* conform/linknamespace.pl: New file.
* conform/list-header-symbols.pl: Likewise.
* conform/Makefile (linknamespace-symlists-base): New variable.
(linknamespace-symlists-tests): Likewise.
(linknamespace-header-base): Likewise.
(linknamespace-header-tests): Likewise.
(tests-special): Add new tests.
($(linknamespace-symlists-tests)): New rule.
(linknamespace-libs): New variable.
($(objpfx)symlist-stdlibs): New rule.
($(linknamespace-header-tests)): Likewise.
(test-xfail-XPG3/varargs.h/linknamespace): New variable.
(test-xfail-XPG4/varargs.h/linknamespace): Likewise.
(test-xfail-UNIX98/varargs.h/linknamespace): Likewise.
(test-xfail-XPG4/ndbm.h/linknamespace): Likewise.
(test-xfail-UNIX98/ndbm.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/ndbm.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/ndbm.h/linknamespace): Likewise.
(test-xfail-ISO/math.h/linknamespace): Likewise.
(test-xfail-ISO/signal.h/linknamespace): Likewise.
(test-xfail-ISO/stdio.h/linknamespace): Likewise.
(test-xfail-ISO/time.h/linknamespace): Likewise.
(test-xfail-ISO99/complex.h/linknamespace): Likewise.
(test-xfail-ISO99/ctype.h/linknamespace): Likewise.
(test-xfail-ISO99/math.h/linknamespace): Likewise.
(test-xfail-ISO99/signal.h/linknamespace): Likewise.
(test-xfail-ISO99/stdio.h/linknamespace): Likewise.
(test-xfail-ISO99/tgmath.h/linknamespace): Likewise.
(test-xfail-ISO11/complex.h/linknamespace): Likewise.
(test-xfail-ISO11/ctype.h/linknamespace): Likewise.
(test-xfail-ISO11/math.h/linknamespace): Likewise.
(test-xfail-ISO11/signal.h/linknamespace): Likewise.
(test-xfail-ISO11/stdio.h/linknamespace): Likewise.
(test-xfail-ISO11/tgmath.h/linknamespace): Likewise.
(test-xfail-XPG3/ctype.h/linknamespace): Likewise.
(test-xfail-XPG3/fnmatch.h/linknamespace): Likewise.
(test-xfail-XPG3/glob.h/linknamespace): Likewise.
(test-xfail-XPG3/math.h/linknamespace): Likewise.
(test-xfail-XPG3/regex.h/linknamespace): Likewise.
(test-xfail-XPG3/search.h/linknamespace): Likewise.
(test-xfail-XPG3/stdio.h/linknamespace): Likewise.
(test-xfail-XPG3/time.h/linknamespace): Likewise.
(test-xfail-XPG3/unistd.h/linknamespace): Likewise.
(test-xfail-XPG3/wordexp.h/linknamespace): Likewise.
(test-xfail-XPG4/ctype.h/linknamespace): Likewise.
(test-xfail-XPG4/fmtmsg.h/linknamespace): Likewise.
(test-xfail-XPG4/fnmatch.h/linknamespace): Likewise.
(test-xfail-XPG4/glob.h/linknamespace): Likewise.
(test-xfail-XPG4/grp.h/linknamespace): Likewise.
(test-xfail-XPG4/libgen.h/linknamespace): Likewise.
(test-xfail-XPG4/math.h/linknamespace): Likewise.
(test-xfail-XPG4/netdb.h/linknamespace): Likewise.
(test-xfail-XPG4/pwd.h/linknamespace): Likewise.
(test-xfail-XPG4/regex.h/linknamespace): Likewise.
(test-xfail-XPG4/search.h/linknamespace): Likewise.
(test-xfail-XPG4/stdio.h/linknamespace): Likewise.
(test-xfail-XPG4/stdlib.h/linknamespace): Likewise.
(test-xfail-XPG4/sys/mman.h/linknamespace): Likewise.
(test-xfail-XPG4/sys/statvfs.h/linknamespace): Likewise.
(test-xfail-XPG4/syslog.h/linknamespace): Likewise.
(test-xfail-XPG4/time.h/linknamespace): Likewise.
(test-xfail-XPG4/unistd.h/linknamespace): Likewise.
(test-xfail-XPG4/wordexp.h/linknamespace): Likewise.
(test-xfail-POSIX/aio.h/linknamespace): Likewise.
(test-xfail-POSIX/fnmatch.h/linknamespace): Likewise.
(test-xfail-POSIX/glob.h/linknamespace): Likewise.
(test-xfail-POSIX/math.h/linknamespace): Likewise.
(test-xfail-POSIX/mqueue.h/linknamespace): Likewise.
(test-xfail-POSIX/pthread.h/linknamespace): Likewise.
(test-xfail-POSIX/regex.h/linknamespace): Likewise.
(test-xfail-POSIX/sched.h/linknamespace): Likewise.
(test-xfail-POSIX/semaphore.h/linknamespace): Likewise.
(test-xfail-POSIX/sys/mman.h/linknamespace): Likewise.
(test-xfail-POSIX/time.h/linknamespace): Likewise.
(test-xfail-POSIX/unistd.h/linknamespace): Likewise.
(test-xfail-POSIX/wordexp.h/linknamespace): Likewise.
(test-xfail-UNIX98/aio.h/linknamespace): Likewise.
(test-xfail-UNIX98/ctype.h/linknamespace): Likewise.
(test-xfail-UNIX98/fmtmsg.h/linknamespace): Likewise.
(test-xfail-UNIX98/fnmatch.h/linknamespace): Likewise.
(test-xfail-UNIX98/glob.h/linknamespace): Likewise.
(test-xfail-UNIX98/grp.h/linknamespace): Likewise.
(test-xfail-UNIX98/libgen.h/linknamespace): Likewise.
(test-xfail-UNIX98/math.h/linknamespace): Likewise.
(test-xfail-UNIX98/mqueue.h/linknamespace): Likewise.
(test-xfail-UNIX98/netdb.h/linknamespace): Likewise.
(test-xfail-UNIX98/pthread.h/linknamespace): Likewise.
(test-xfail-UNIX98/pwd.h/linknamespace): Likewise.
(test-xfail-UNIX98/regex.h/linknamespace): Likewise.
(test-xfail-UNIX98/sched.h/linknamespace): Likewise.
(test-xfail-UNIX98/search.h/linknamespace): Likewise.
(test-xfail-UNIX98/semaphore.h/linknamespace): Likewise.
(test-xfail-UNIX98/stdio.h/linknamespace): Likewise.
(test-xfail-UNIX98/stdlib.h/linknamespace): Likewise.
(test-xfail-UNIX98/sys/mman.h/linknamespace): Likewise.
(test-xfail-UNIX98/sys/statvfs.h/linknamespace): Likewise.
(test-xfail-UNIX98/syslog.h/linknamespace): Likewise.
(test-xfail-UNIX98/time.h/linknamespace): Likewise.
(test-xfail-UNIX98/unistd.h/linknamespace): Likewise.
(test-xfail-UNIX98/wchar.h/linknamespace): Likewise.
(test-xfail-UNIX98/wordexp.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/aio.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/complex.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/fcntl.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/fmtmsg.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/fnmatch.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/glob.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/grp.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/libgen.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/math.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/mqueue.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/net/if.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/netdb.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/pthread.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/pwd.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/regex.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/search.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/semaphore.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/signal.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/spawn.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/stdlib.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/sys/mman.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/sys/statvfs.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/sys/wait.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/syslog.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/tgmath.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/time.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/ucontext.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/unistd.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/wordexp.h/linknamespace): Likewise.
(test-xfail-POSIX2008/aio.h/linknamespace): Likewise.
(test-xfail-POSIX2008/complex.h/linknamespace): Likewise.
(test-xfail-POSIX2008/ctype.h/linknamespace): Likewise.
(test-xfail-POSIX2008/dirent.h/linknamespace): Likewise.
(test-xfail-POSIX2008/fcntl.h/linknamespace): Likewise.
(test-xfail-POSIX2008/grp.h/linknamespace): Likewise.
(test-xfail-POSIX2008/math.h/linknamespace): Likewise.
(test-xfail-POSIX2008/mqueue.h/linknamespace): Likewise.
(test-xfail-POSIX2008/net/if.h/linknamespace): Likewise.
(test-xfail-POSIX2008/netdb.h/linknamespace): Likewise.
(test-xfail-POSIX2008/pthread.h/linknamespace): Likewise.
(test-xfail-POSIX2008/regex.h/linknamespace): Likewise.
(test-xfail-POSIX2008/semaphore.h/linknamespace): Likewise.
(test-xfail-POSIX2008/spawn.h/linknamespace): Likewise.
(test-xfail-POSIX2008/sys/mman.h/linknamespace): Likewise.
(test-xfail-POSIX2008/sys/statvfs.h/linknamespace): Likewise.
(test-xfail-POSIX2008/tgmath.h/linknamespace): Likewise.
(test-xfail-POSIX2008/time.h/linknamespace): Likewise.
(test-xfail-POSIX2008/unistd.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/aio.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/complex.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/dirent.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/fcntl.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/fmtmsg.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/grp.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/libgen.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/math.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/mqueue.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/net/if.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/netdb.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/pthread.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/pwd.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/regex.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/search.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/semaphore.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/spawn.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/sys/mman.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/sys/statvfs.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/syslog.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/tgmath.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/time.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/unistd.h/linknamespace): Likewise.
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