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glibc/include
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Stefan Liebler 80eb52e3a9 Remove attribute_hidden for wchar ifunc symbols. 
On s390 (31bit) various debug/tst-*chk* testcases are failing as the tests
are ending with a segmentation fault.

One test is e.g. calling wcsnrtombs in debug/tst-chk1.c:1549.
The function wcsnrtombs itself calls __wcsnlen. This function is called via
PLT! The PLT-stub itself loads the address from GOT (r12 is assumed to be
the GOT-pointer). In this case the loaded address is zero and the following
branch leads to the segmentation fault.

Due to the attribute_hidden in commit 44af8a32c3
"Mark internal wchar functions with attribute_hidden [BZ #18822]"
for e.g. the __wcsnlen function, r12 is not loaded with the GOT-pointer
in wcsnrtombs.

On s390x (64bit), this __wcsnlen call is also using the PLT-stub. But it is
not failing as the GOT-pointer is setup with larl-instruction by the PLT-stub
itself.
Note: On s390x/s390, __wcsnlen is an IFUNC symbol.

On x86_64, __wcsnlen is also an IFUNC symbol and is called via PLT, too.

Further IFUNC symbols on s390 which were marked as hidden by the mentioned
commit are: __wcscat, __wcsncpy, __wcpncpy, __wcschrnul.

This patch removes the attribute_hidden in wchar.h.
Then the compiler setups e.g. r12 on s390 in order to call __wcsnlen via PLT.

ChangeLog:

	* include/wchar.h (__wcsnlen, __wcscat, __wcsncpy, __wcpncpy,
	__wcschrnul): Remove attribute_hidden.
2017-11-21 08:43:23 +01:00
..
arpa nss_dns: Replace local declarations with declarations from a header file 2017-04-04 20:56:23 +02:00
bits Fix sigval namespace (bug 21944). 2017-08-16 20:33:59 +00:00
gnu Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
net Fix resolver if_* namespace (bug 17717). 2014-12-16 18:18:49 +00:00
netinet Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
programs Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
protocols
rpc Mark internal rpc functions with attribute_hidden [BZ #18822] 2017-10-01 15:55:15 -07:00
rpcsvc Deprecate libnsl by default (only shared library will be 2017-03-21 15:14:27 +01:00
sys Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN 2017-10-03 01:33:38 +02:00
aio.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
aliases.h Mark internal getXXXbyYYY functions with attribute_hidden [BZ #18822] 2017-10-01 15:21:00 -07:00
alloc_buffer.h Replace "if if " with "if " in comments 2017-10-25 08:05:51 -07:00
alloca.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
argp-fmtstream.h Mark internal argp functions with attribute_hidden [BZ #18822] 2017-10-01 15:10:27 -07:00
argp.h Mark internal argp functions with attribute_hidden [BZ #18822] 2017-10-01 15:10:27 -07:00
argz.h Mark internal argz functions with attribute_hidden [BZ #18822] 2017-08-18 09:31:33 -07:00
array_length.h <array_length.h>: New array_length and array_end macros 2017-11-02 12:45:20 +01:00
assert.h Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN 2017-10-03 01:33:38 +02:00
atomic.h Optimize generic spinlock code and use C11 like atomic macros. 2017-06-06 09:41:56 +02:00
byteswap.h
caller.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
complex.h float128: Add private _Float128 declarations for libm. 2017-05-15 10:23:28 -03:00
cpio.h Add more headers to include/ for conform tests. 2014-12-11 21:41:30 +00:00
crypt.h Add include/crypt.h. 2016-10-28 22:40:16 -04:00
ctype.h Rename bits/libc-tsd.h to libc-tsd.h (bug 14912). 2015-09-03 20:33:46 +00:00
des.h
dirent.h Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN 2017-10-03 01:33:38 +02:00
dlfcn.h Mark internal functions with attribute_hidden [BZ #18822] 2017-10-01 15:07:23 -07:00
dso_handle.h Mark __dso_handle as hidden [BZ #18822] 2017-09-26 16:53:44 -07:00
elf.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
endian.h
envz.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
err.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
errno.h Remove __need macros from errno.h (__need_Emath, __need_error_t). 2017-06-14 08:14:34 -04:00
error.h
execinfo.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
fcntl.h Consolidate remaning non cancellable definitions 2017-08-23 10:47:03 -03:00
features.h Ensure C99 and C11 interfaces are available for C++ [BZ #21326] 2017-10-09 16:18:11 +02:00
fenv.h Mark fegetround pure (bug 16296). 2015-09-15 20:36:50 +00:00
float.h Handle more _FloatN, _FloatNx types in include/float.h. 2017-11-07 23:49:04 +00:00
fmtmsg.h Add more headers to include/ for conform tests. 2014-12-11 21:41:30 +00:00
fnmatch.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
fpu_control.h Hide internal __setfpucw function [BZ #18822] 2017-10-01 17:52:15 -07:00
ftw.h
gconv.h
getopt_int.h
getopt.h getopt: remove USE_NONOPTION_FLAGS 2017-04-07 07:45:53 -04:00
glob.h Hide internal __glob64 function [BZ #18822] 2017-10-01 18:02:10 -07:00
gmp.h Mark internal gmp functions with attribute_hidden [BZ #18822] 2017-10-01 15:15:30 -07:00
gnu-versions.h posix: Add compat glob symbol to not follow dangling symbols 2017-09-25 18:04:16 -07:00
grp-merge.h NSS: Implement group merging support. 2016-04-29 22:18:21 -04:00
grp.h Mark internal grp/pwd/shadow functions with attribute_hidden [BZ #18822] 2017-10-01 15:13:13 -07:00
gshadow.h Mark internal gshadow functions with attribute_hidden [BZ #18822] 2017-10-01 15:19:17 -07:00
iconv.h
idna.h Hide internal idna functions [BZ #18822] 2017-10-01 17:33:22 -07:00
ifaddrs.h hurd: Fix getifaddrs' and freeifaddrs' symbol exposition 2017-09-28 01:05:18 +02:00
ifreq.h Hide internal __ifreq function [BZ #18822] 2017-10-01 17:35:46 -07:00
ifunc-impl-list.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
inline-hashtab.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
langinfo.h Add first fixes for conformtest for POSIX2008 2012-02-26 21:32:56 -05:00
libc-diag.h Split DIAG_* macros to new header libc-diag.h. 2017-02-25 09:59:46 -05:00
libc-internal.h Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN 2017-10-03 01:33:38 +02:00
libc-pointer-arith.h Narrowing the visibility of libc-internal.h even further. 2017-03-01 20:33:46 -05:00
libc-symbols.h Don't use hidden visibility in libc.a with PIE on i386 2017-10-04 17:18:42 -07:00
libgen.h
libintl.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
libio.h Remove _IO_MTSAFE_IO from public headers. 2017-05-11 19:14:11 -04:00
limits.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
link.h ld.so: Add architecture specific fields 2017-11-13 08:02:52 -08:00
list_t.h Remove __need_list_t and __need_res_state. 2017-05-20 19:01:46 -04:00
list.h Remove __need_list_t and __need_res_state. 2017-05-20 19:01:46 -04:00
locale.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
malloc.h Hide internal __malloc_check_init function [BZ #18822] 2017-10-01 16:00:36 -07:00
math.h Remove _Mlong_double_ etc. macros. 2017-10-30 20:58:51 +00:00
mcheck.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
memory.h
mntent.h Hide internal __hasmntopt function [BZ #18822] 2017-10-01 17:37:42 -07:00
monetary.h Hide internal __vstrfmon_l function [BZ #18822] 2017-10-01 17:45:07 -07:00
mqueue.h Fix mq_receive, mq_send mq_timed* namespace (bug 18545). 2015-06-17 20:19:04 +00:00
netdb.h Mark internal getXXXbyYYY functions with attribute_hidden [BZ #18822] 2017-10-01 15:21:00 -07:00
netgroup.h
nl_types.h
nss.h NSS: Remove internal_function function attribute 2017-08-31 15:59:06 +02:00
nsswitch.h
obstack.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
plural-exp.h Hide internal __gettextparse function [BZ #18822] 2017-10-01 17:31:05 -07:00
poll.h
printf.h Hide internal printf functions [BZ #18822/21986] 2017-08-22 07:50:57 -07:00
pthread.h Fix mq_notify pthread_barrier_* namespace (bug 18544). 2015-06-17 20:16:56 +00:00
pty.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
pwd.h Mark internal grp/pwd/shadow functions with attribute_hidden [BZ #18822] 2017-10-01 15:13:13 -07:00
regex.h Hide internal regex functions [BZ #18822] 2017-10-01 15:53:15 -07:00
resolv.h resolv: Introduce struct resolv_context [BZ #21668] 2017-07-03 20:52:59 +02:00
rounding-mode.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sched.h Hide internal __sched_setparam function [BZ #18822] 2017-10-01 17:43:25 -07:00
scratch_buffer.h scratch_buffer: use union for internal buffer 2017-09-25 18:04:22 -07:00
search.h Hide internal __tdestroy function [BZ #18822] 2017-10-01 16:06:58 -07:00
set-hooks.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
setjmp.h Add jmp_buf-macros.h 2017-11-09 05:10:03 -08:00
sgtty.h
shadow.h Mark internal grp/pwd/shadow functions with attribute_hidden [BZ #18822] 2017-10-01 15:13:13 -07:00
shlib-compat.h shlib-compat: Update documentation of the compat_symbol_reference macro 2017-10-16 20:43:28 +02:00
signal.h Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN 2017-10-03 01:33:38 +02:00
spawn.h
stab.h
stackinfo.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
stap-probe.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
stdc-predef.h Bug 21533: Update to Unicode 10.0.0 2017-06-22 17:02:55 +02:00
stdio_ext.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
stdio.h Mark internal stdio functions with attribute_hidden [BZ #18822] 2017-10-01 15:20:13 -07:00
stdlib.h Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN 2017-10-03 01:33:38 +02:00
string.h Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN 2017-10-03 01:33:38 +02:00
strings.h
stropts.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
stubs-prologue.h
syscall.h
sysexits.h
syslog.h
tar.h
termios.h Hide internal __tcgetattr function [BZ #18822] 2017-10-01 17:48:24 -07:00
tgmath.h
time.h Mark internal time functions with attribute_hidden [BZ #18822] 2017-10-01 15:17:32 -07:00
ttyent.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
uchar.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
ucontext.h
ulimit.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
unistd.h Mark internal unistd functions with attribute_hidden [BZ #18822] 2017-10-01 15:12:04 -07:00
utime.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
utmp.h Mark internal utmp functions with attribute_hidden [BZ #18822] 2017-10-01 15:51:56 -07:00
values.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
wchar.h Remove attribute_hidden for wchar ifunc symbols. 2017-11-21 08:43:23 +01:00
wctype.h Remove __need macros from stdio.h and wchar.h. 2017-06-08 13:58:17 -04:00
wordexp.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00