Release/2.26

Contents

Current status
Planning
1. Release blockers?
2. Desirable this release?
Build and test results
Packaging Changes
1. Removal of 'xlocale.h'
2. Removal of 'struct ucontext'

1. Current status

The release branch of glibc-2.26 is maintained by Siddhesh Poyarekar and was released on 2017-08-02. There are no immediate plans for the next release.

The ref structure of this branch is:

release/2.26/master: main branch
glibc-2.26.N: revision releases tagged out of release/2.26/master

These people are interested in contents and further revisions tagged on the branch:

<Add your name here>

The general policies for release branches apply to this branch. Do you think a certain bugfix should be included in this branch?

Is the fix committed in master? It has to be, unless it's not applicable to master (e.g. code has been rewritten meantime).
Do you have commit permissions? If so, go ahead if you think it's reasonably safe. break;
Can you handle Git yourself? Then you can clone the glibc repository, cherry-pick the appropriate fixes, push your branch out and send a pull request at libc-alpha. break;
Add the glibc_2.26 keyword to the appropriate bug report.
If there is no appropriate bug report, send a request for the fix to be included to libc-alpha.

A revision release is tagged either when some critical bug-fix appears, or after some period of real-world testing, usually mainly in some SUSE distribution branch (but other distributions are welcome to run latest release/2.26/master as well, more so if they tell me about it!).

2. Planning

What things do we want to accomplish this release?

2.1. Release blockers?

Automatically reload a changed /etc/resolv.conf (Bug 984) Commit aef16cc8a4c670036d45590877d411a97f01e0cd
__stack_chk_fail should not attempt a backtrack (Bug 12189)
- More fixes scheduled in pr#21752.
Thread Local Cache Commit d5c3fafc4307c9b7a4c7d5cb381fcdbfad340bcc
- Carlos O'Donell doing one final round of review.
Fix rwlock explicit hand-over (Bug 21298) Commit faf8c066df0d6bccb54bd74dd696eeb65e1b3bbc
- Carlos O'Donell doing review. Done
Fix powerpc64le regression when using Binutils master and GCC trunk
- Bug 21707
The NEWS file section for security-related changes need to be completed.

2.2. Desirable this release?

ppc64le: expected localentry:0 `pthread_…' ld.so error prevents allocation startup
- Declared not a release blocker (https://www.sourceware.org/ml/libc-alpha/2017-07/msg00970.html)
- Fedora is working around this issue by disabling the optimization by default in the distribution.
- Binutils 2.29 will need more work before downstream distributions can use it for ppc64le.
[PATCH] [BZ #21778] Fix oversight in robust mutex lock acquisition.(Bug 21778)
- Under review by Carlos O'Donell Commit 5920a4a624b1f4db310d1c44997b640e2a4653e5

3. Build and test results

Describe build and test issues for each architecture, or confirm a clean build with no testsuite failures. The list below is not a complete list of ABI variants; testing should try to cover the different ABI variants as far as possible.

Build system: UNAME -a, GCC?, Binutils?, Kernel ?

TRIMMED LIST OF FAILURES.

3.1. Architecture-independent

On systems with limited memory, stdio-common/test-vfprintf and stdio-common/bug22 may fail (bug 14231).
If cross-testing, and the physical path to the build directory is different on the build system and the host used for testing (if it involves a symlink on one system but not the other), io/ftwtest fails.
If cross-testing and the system on which glibc runs does not have cpp (used by rpcgen), sunrpc/bug20790 fails.
If cross-testing and the system on which glibc runs does not have python3 or python (whichever was found by configure on the build system), the pretty printers tests fail:
```
FAIL: nptl/test-cond-printers
FAIL: nptl/test-condattr-printers
FAIL: nptl/test-mutex-printers
FAIL: nptl/test-mutexattr-printers
FAIL: nptl/test-rwlock-printers
FAIL: nptl/test-rwlockattr-printers
```
Similarly if the system lacks PExpect 4.0 or newer the same tests fail. Similarly if the system lacks gdb 7.8 or newer the same tests fail.
On systems with Linux kernel 3.11 through 3.17, missing a backport of commit 69a91c237ab0ebe4e9fdeaf6d0090c85275594ec (present in 3.18, backports may be in some older stable series), io/tst-open-tmpfile fails.
timezone/tst-tzset creates a 4GB file in $TMPDIR and fails if there is not enough disk space.
If the test system does not have suitable copies of libgcc_s.so and libstdc++.so installed in system library directories, it is necessary to copy or symlink them into the build directory before testing (see https://sourceware.org/ml/libc-alpha/2012-04/msg01014.html regarding the use of system library directories here).
If glibc was configured without --enable-obsolete-nsl the libnss_compat library will not be built. If the library is not built, it may still be found during testing if dl_open searches the default host library directories. If it is not found these tests will fail:
```
FAIL: grp/testgrp
FAIL: nss/bug17079
FAIL: posix/globtest
FAIL: pwd/tst-getpw
```
If the test host is configured with an older version of sssd and uses sss as the service provider then FAIL: nss/bug17079 may show up because you do not have this fix: swbz#22530, sssd#3589.

3.2. AArch64

Build system: gcc 8.0.0 20170518, binutils 2.28.51.20170518, Linux 4.2.0 (Szabolcs Nagy)

XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
UNSUPPORTED: math/test-fesetexcept-traps
UNSUPPORTED: math/test-fexcept-traps
UNSUPPORTED: math/test-nearbyint-except-2
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
UNSUPPORTED: posix/tst-sysconf-empty-chroot
UNSUPPORTED: resolv/tst-resolv-res_init
UNSUPPORTED: resolv/tst-resolv-res_init-thread
UNSUPPORTED: resolv/tst-resolv-threads
UNSUPPORTED: sunrpc/tst-svc_register
Summary of test results:
   3711 PASS
     14 UNSUPPORTED
     29 XFAIL
      2 XPASS

Build system: RHEL7 gcc version 7.1.1 20170526 (Red Hat 7.1.1-2) (GCC) GNU ld version 2.28-5.el7 4.5.0-15.4.2.el7.aarch64 (DJ Delorie)

XPASS: conform/UNIX98/ndbm.h/linknamespace
XPASS: conform/XOPEN2K/ndbm.h/linknamespace
XPASS: conform/XOPEN2K8/ndbm.h/linknamespace
XPASS: conform/XPG42/ndbm.h/linknamespace
XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
UNSUPPORTED: math/test-fesetexcept-traps
UNSUPPORTED: math/test-fexcept-traps
UNSUPPORTED: math/test-nearbyint-except-2
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
UNSUPPORTED: nptl/tst-thread_local1
UNSUPPORTED: stdlib/tst-quick_exit
UNSUPPORTED: stdlib/tst-thread-quick_exit
Summary of test results:
   3723 PASS
     12 UNSUPPORTED
     25 XFAIL
      6 XPASS

The *printers tests are unsupported because of pexpect < 4.0
The C++ support in RHEL7 lacks thread local so the related thread local tests are disabled.

math/test-fesetexcept-traps is unsupported because:

 * feenableexcept (FE_ALL_EXCEPT) not supported, cannot test

math/test-fexcept-traps is unsupported because:

 * feenableexcept (FE_ALL_EXCEPT) not supported, cannot test

math/test-nearbyint-except-2 is unsupported because:
```
enabling FE_INEXACT traps failed, cannot test
```

3.3. Alpha

Build system: GCC 6.3.0 20170516 (Debian 6.3.0-18), binutils 2.28, Linux 4.12.2 (Adhemerval Zanella) System info: Alpha EV68CB

FAIL: crypt/badsalttest
FAIL: elf/tst-prelink-cmp
XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
FAIL: intl/tst-gettext
UNSUPPORTED: io/tst-fallocate
UNSUPPORTED: io/tst-fallocate64
FAIL: io/tst-fts-lfs
FAIL: malloc/tst-interpose-thread
FAIL: malloc/tst-malloc-fork-deadlock
FAIL: malloc/tst-malloc-thread-exit
FAIL: math/test-double-cacos
FAIL: math/test-double-cacosh
FAIL: math/test-double-casin
FAIL: math/test-double-casinh
FAIL: math/test-double-catan
FAIL: math/test-double-catanh
FAIL: math/test-double-ceil
FAIL: math/test-double-finite-cacos
FAIL: math/test-double-finite-cacosh
FAIL: math/test-double-finite-casin
FAIL: math/test-double-finite-casinh
FAIL: math/test-double-finite-catan
FAIL: math/test-double-finite-catanh
FAIL: math/test-double-finite-ceil
FAIL: math/test-double-finite-floor
FAIL: math/test-double-finite-fma
FAIL: math/test-double-finite-llrint
FAIL: math/test-double-finite-llround
FAIL: math/test-double-finite-lrint
FAIL: math/test-double-finite-lround
FAIL: math/test-double-finite-remainder
FAIL: math/test-double-finite-scalbln
FAIL: math/test-double-finite-scalbn
FAIL: math/test-double-finite-trunc
FAIL: math/test-double-floor
FAIL: math/test-double-fma
FAIL: math/test-double-fmax
FAIL: math/test-double-fmin
FAIL: math/test-double-llrint
FAIL: math/test-double-llround
FAIL: math/test-double-lrint
FAIL: math/test-double-lround
FAIL: math/test-double-remainder
FAIL: math/test-double-scalbln
FAIL: math/test-double-scalbn
FAIL: math/test-double-trunc
FAIL: math/test-fenv-return
FAIL: math/test-fenv-tls
FAIL: math/test-fexcept
FAIL: math/test-float-cacos
FAIL: math/test-float-cacosh
FAIL: math/test-float-casin
FAIL: math/test-float-casinh
FAIL: math/test-float-catan
FAIL: math/test-float-catanh
FAIL: math/test-float-ceil
FAIL: math/test-float-finite-cacos
FAIL: math/test-float-finite-cacosh
FAIL: math/test-float-finite-casin
FAIL: math/test-float-finite-casinh
FAIL: math/test-float-finite-catan
FAIL: math/test-float-finite-catanh
FAIL: math/test-float-finite-ceil
FAIL: math/test-float-finite-floor
FAIL: math/test-float-finite-fma
FAIL: math/test-float-finite-llrint
FAIL: math/test-float-finite-llround
FAIL: math/test-float-finite-lrint
FAIL: math/test-float-finite-lround
FAIL: math/test-float-finite-scalbln
FAIL: math/test-float-finite-scalbn
FAIL: math/test-float-finite-trunc
FAIL: math/test-float-floor
FAIL: math/test-float-fma
FAIL: math/test-float-fmax
FAIL: math/test-float-fmin
FAIL: math/test-float-llrint
FAIL: math/test-float-llround
FAIL: math/test-float-lrint
FAIL: math/test-float-llround
FAIL: math/test-float-lrint
FAIL: math/test-float-lround
FAIL: math/test-float-scalbln
FAIL: math/test-float-scalbn
FAIL: math/test-float-trunc
FAIL: math/test-idouble-cacos
FAIL: math/test-idouble-cacosh
FAIL: math/test-idouble-casin
FAIL: math/test-idouble-casinh
FAIL: math/test-idouble-catan
FAIL: math/test-idouble-catanh
FAIL: math/test-idouble-fmax
FAIL: math/test-idouble-fmin
FAIL: math/test-ifloat-cacos
FAIL: math/test-ifloat-cacosh
FAIL: math/test-ifloat-casin
FAIL: math/test-ifloat-casinh
FAIL: math/test-ifloat-catan
FAIL: math/test-ifloat-catanh
FAIL: math/test-ifloat-fmax
FAIL: math/test-ifloat-fmin
FAIL: math/test-ildouble-cacos
FAIL: math/test-ildouble-cacosh
FAIL: math/test-ildouble-casin
FAIL: math/test-ildouble-casinh
FAIL: math/test-ildouble-catan
FAIL: math/test-ildouble-catanh
FAIL: math/test-ldouble-cacos
FAIL: math/test-ldouble-cacosh
FAIL: math/test-ldouble-casin
FAIL: math/test-ildouble-casinh
FAIL: math/test-ildouble-catan
FAIL: math/test-ildouble-catanh
FAIL: math/test-ldouble-cacos
FAIL: math/test-ldouble-cacosh
FAIL: math/test-ldouble-casin
FAIL: math/test-ldouble-casinh
FAIL: math/test-ldouble-catan
FAIL: math/test-ldouble-catanh
FAIL: math/test-ldouble-finite-cacos
FAIL: math/test-ldouble-finite-cacosh
FAIL: math/test-ldouble-finite-casin
FAIL: math/test-ldouble-finite-casinh
FAIL: math/test-ldouble-finite-catan
FAIL: math/test-ldouble-finite-catanh
FAIL: math/test-ldouble-finite-llrint
FAIL: math/test-ldouble-finite-llround
FAIL: math/test-ldouble-finite-lrint
FAIL: math/test-ldouble-finite-lround
FAIL: math/test-ldouble-llrint
FAIL: math/test-ldouble-llround
FAIL: math/test-ldouble-lrint
FAIL: math/test-ldouble-lround
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers  
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers 
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
FAIL: nptl/tst-cond-except
FAIL: nptl/tst-cond24
FAIL: nptl/tst-cond25
FAIL: nptl/tst-robust-fork
FAIL: nptl/tst-robust1
FAIL: nptl/tst-robust2
FAIL: nptl/tst-robust3
FAIL: nptl/tst-robust4
FAIL: nptl/tst-robust5
FAIL: nptl/tst-robust6
FAIL: nptl/tst-robust7
FAIL: nptl/tst-robust8
FAIL: nptl/tst-robust9
FAIL: nss/tst-cancel-getpwuid_r
FAIL: resolv/tst-bug18665
FAIL: resolv/tst-bug18665-tcp
FAIL: resolv/tst-res_hconf_reorder
FAIL: resolv/tst-res_use_inet6
FAIL: resolv/tst-resolv-basic
FAIL: resolv/tst-resolv-canonname
FAIL: resolv/tst-resolv-edns
FAIL: resolv/tst-resolv-network
FAIL: resolv/tst-resolv-res_init
FAIL: resolv/tst-resolv-res_init-multi
FAIL: resolv/tst-resolv-res_init-thread   
FAIL: resolv/tst-resolv-search
UNSUPPORTED: resolv/tst-resolv-threads
FAIL: rt/tst-aio10
FAIL: rt/tst-aio2
FAIL: rt/tst-aio3
FAIL: rt/tst-aio5
FAIL: rt/tst-aio9
FAIL: rt/tst-cpuclock2
FAIL: rt/tst-cputimer1
FAIL: rt/tst-cputimer2
FAIL: rt/tst-cputimer3
FAIL: rt/tst-mqueue3
FAIL: rt/tst-mqueue5
FAIL: rt/tst-mqueue6
FAIL: rt/tst-mqueue8
FAIL: rt/tst-mqueue8x
FAIL: rt/tst-shm-cancel
FAIL: rt/tst-timer
FAIL: rt/tst-timer3
FAIL: rt/tst-timer4
FAIL: rt/tst-timer5
UNSUPPORTED: sunrpc/tst-svc_register
Summary of test results:
    167 FAIL
   3530 PASS
     10 UNSUPPORTED
     29 XFAIL
      2 XPASS

crypt/badsalttest segfaults and gdb indicates:

Program received signal SIGSEGV, Segmentation fault.
strncmp () at ../sysdeps/alpha/strncmp.S:160
160             ldq_u   t2, 8(a1)       # load second partial s2 word
(gdb) bt
#0  strncmp () at ../sysdeps/alpha/strncmp.S:160
#1  0x0000020000005250 in crypt (key=0x120002570 "end of page", salt=0x20000223fff "*") at crypt-entry.c:162

io/tst-fts-lfs fails with "FAIL: unexpected fts_read ent 5B7DES".
malloc/tst-interpose-thread, malloc/tst-malloc-fork-deadlock, malloc/tst-malloc-thread-exit, nss/tst-cancel-getpwuid_r, resolv/tst-res_hconf_reorder, rt/tst-aio{2,3,5,9,10}, rt/tst-cpuclock2, rt/tst-cputimer{1,2,3}, rt/tst-mqueue{3,5,6,8}, rt/tst-shm-cancel, rt/tst-timer{3,4,5} failed with an abort. However they do not fail when executed directly using testrun.sh and mostly likely it due system interference since the test system is used a build one for debian (even though I issued make check with TIMEOUTFACTOR=100).
math tests misses a ULP regeneration and tests are failing due unexpected exception being generated.
nptl/tst-cond-except, nptl/tst-cond24, nptl/tst-cond25, nptl/tst-robust-fork, nptl/tst-robust{1,2,3,4,5,6,7,8,9} fail with 'pthread_mutex_init failed: Operation not supported' because set_robust_list syscall returns ENOSYS.
resolv/tst-bug18665, resolv/tst-bug18665-tcp, resolv/tst-res_use_inet6, resolv/tst-resolv-basic, resolv/tst-resolv-canonname, resolv/tst-resolv-edns, resolv/tst-resolv-network, resolv/tst-resolv-res_init, resolv/tst-resolv-res_init-multi, resolv/tst-resolv-res_init-thread, resolv/tst-resolv-search failed because they could not enter network namespace because unshare(CLONE_NEWNET) return EINVAL.

3.4. ARM

Build system: (hard-float ABI) GCC 6.3.1 20170703, binutils 2.28.51.20170703, Linux 3.5.0 (Joseph Myers)

XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
FAIL: io/ftwtest
UNSUPPORTED: io/tst-open-tmpfile
UNSUPPORTED: math/test-fesetexcept-traps
UNSUPPORTED: math/test-fexcept-traps
UNSUPPORTED: math/test-nearbyint-except-2
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
FAIL: nptl/tst-create-detached
FAIL: nptl/tst-robust-fork
FAIL: nptl/tst-stack4
FAIL: nss/tst-nss-getpwent
FAIL: posix/tst-spawn-static
FAIL: resolv/tst-resolv-basic
UNSUPPORTED: resolv/tst-resolv-res_init
UNSUPPORTED: resolv/tst-resolv-res_init-thread
FAIL: stdio-common/bug22
UNSUPPORTED: stdlib/tst-getrandom
FAIL: sunrpc/bug20790
UNSUPPORTED: sunrpc/tst-svc_register
FAIL: timezone/tst-tzset
Summary of test results:
     10 FAIL
   3315 PASS
     14 UNSUPPORTED
     29 XFAIL
      2 XPASS

nptl/tst-create-detached, nptl/tst-robust-fork, nptl/tst-stack4, nss/tst-nss-getpwent time out.
posix/tst-spawn-static "file 2 not in right position".
resolv/tst-resolv-basic:

warning: could not become root outside namespace (Operation not permitted)
warning: unshare (CLONE_NEWUTS) failed: Operation not permitted
warning: could not enter network namespace
error: addrinfo comparison failure
query: www.example:80 [10]/0x18
--- expected
+++ actual
@@ -1,3 +1,3 @@
 flags: AI_V4MAPPED AI_ALL
-address: STREAM/TCP 2001:db8::1 80
 address: STREAM/TCP ::ffff:192.0.2.17 80
+address: STREAM/TCP 2001:db8::1 80
error: addrinfo comparison failure
query: t.www.example:80 [10]/0x18
--- expected
+++ actual
@@ -1,3 +1,3 @@
 flags: AI_V4MAPPED AI_ALL
-address: STREAM/TCP 2001:db8::3 80
 address: STREAM/TCP ::ffff:192.0.2.19 80
+address: STREAM/TCP 2001:db8::3 80
error: 2 test failures

3.5. HPPA

Build system: (Debian GNU/Linux buster/sid) GCC 6.4.0 20170704, binutils 2.28, Linux 4.11.11+ (Dave Anglin)

FAIL: debug/tst-backtrace2
FAIL: debug/tst-backtrace3
FAIL: debug/tst-backtrace4
FAIL: debug/tst-backtrace5
FAIL: debug/tst-backtrace6
FAIL: elf/check-execstack
FAIL: elf/check-textrel
FAIL: elf/neededtest
FAIL: elf/order2-cmp
FAIL: elf/reldep3
FAIL: elf/tst-audit2
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
FAIL: nptl/tst-cleanupx4
FAIL: nptl/tst-create-detached
FAIL: nss/tst-nss-test4
FAIL: stdlib/tst-setcontext2
Summary of test results:
    15 FAIL
  3321 PASS
     6 UNSUPPORTED
    31 XFAIL

Includes following patch: https://sourceware.org/ml/libc-alpha/2017-07/msg00600.html

3.6. IA64

Build system: GCC 7.2.1, binutils 2.29.1, Linux 3.16.39-1 (Adhemerval Zanella)

FAIL: debug/tst-backtrace4
FAIL: elf/check-execstack
XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
FAIL: math/test-double-atan2
FAIL: math/test-double-atanh
FAIL: math/test-double-ceil
FAIL: math/test-double-cos
FAIL: math/test-double-cosh
FAIL: math/test-double-erfc
FAIL: math/test-double-exp
FAIL: math/test-double-exp10
FAIL: math/test-double-exp2
FAIL: math/test-double-fabs
FAIL: math/test-double-fdim
FAIL: math/test-double-finite-ceil
FAIL: math/test-double-finite-floor
FAIL: math/test-double-finite-pow
FAIL: math/test-double-finite-scalb
FAIL: math/test-double-floor
FAIL: math/test-double-fmax
FAIL: math/test-double-fmod
FAIL: math/test-double-frexp
FAIL: math/test-double-hypot
FAIL: math/test-double-lgamma
FAIL: math/test-double-pow
FAIL: math/test-double-remainder
FAIL: math/test-double-scalb
FAIL: math/test-double-sin
FAIL: math/test-double-sincos
FAIL: math/test-double-sinh
FAIL: math/test-double-tan
FAIL: math/test-double-tgamma
FAIL: math/test-fenv-return
FAIL: math/test-fesetexcept
FAIL: math/test-fexcept
FAIL: math/test-float-atan2
FAIL: math/test-float-atanh
FAIL: math/test-float-cabs
FAIL: math/test-float-ceil
FAIL: math/test-float-cos
FAIL: math/test-float-cosh
FAIL: math/test-float-erfc
FAIL: math/test-float-exp
FAIL: math/test-float-exp10
FAIL: math/test-float-exp2
FAIL: math/test-float-fabs
FAIL: math/test-float-fdim
FAIL: math/test-float-finite-ceil
FAIL: math/test-float-finite-floor
FAIL: math/test-float-finite-pow
FAIL: math/test-float-finite-scalb
FAIL: math/test-float-floor
FAIL: math/test-float-fmax
FAIL: math/test-float-fmod
FAIL: math/test-float-frexp
FAIL: math/test-float-hypot
FAIL: math/test-float-lgamma
FAIL: math/test-float-pow
FAIL: math/test-float-remainder
FAIL: math/test-float-scalb
FAIL: math/test-float-sin
FAIL: math/test-float-sincos
FAIL: math/test-float-sinh
FAIL: math/test-float-tan
FAIL: math/test-float-tgamma
FAIL: math/test-idouble-cosh
FAIL: math/test-idouble-exp
FAIL: math/test-idouble-exp10
FAIL: math/test-idouble-exp2
FAIL: math/test-idouble-fmax
FAIL: math/test-idouble-frexp
FAIL: math/test-idouble-hypot
FAIL: math/test-idouble-lgamma
FAIL: math/test-idouble-pow
FAIL: math/test-idouble-scalb
FAIL: math/test-idouble-sinh
FAIL: math/test-idouble-tgamma
FAIL: math/test-ifloat-cabs
FAIL: math/test-ifloat-cosh
FAIL: math/test-ifloat-exp
FAIL: math/test-ifloat-exp10
FAIL: math/test-ifloat-exp2
FAIL: math/test-ifloat-fmax
FAIL: math/test-ifloat-frexp
FAIL: math/test-ifloat-hypot
FAIL: math/test-ifloat-lgamma
FAIL: math/test-ifloat-pow
FAIL: math/test-ifloat-scalb
FAIL: math/test-ifloat-sinh
FAIL: math/test-ifloat-tgamma
FAIL: math/test-ildouble-exp
FAIL: math/test-ildouble-exp10
FAIL: math/test-ildouble-exp2
FAIL: math/test-ildouble-fmax
FAIL: math/test-ildouble-frexp
FAIL: math/test-ildouble-lgamma
FAIL: math/test-ildouble-pow
FAIL: math/test-ildouble-scalb
FAIL: math/test-ildouble-tgamma
FAIL: math/test-ldouble-atan2
FAIL: math/test-ldouble-atanh
FAIL: math/test-ldouble-ceil
FAIL: math/test-ldouble-cos
FAIL: math/test-ldouble-cosh
FAIL: math/test-ldouble-erfc
FAIL: math/test-ldouble-exp
FAIL: math/test-ldouble-exp10
FAIL: math/test-ldouble-exp2
FAIL: math/test-ldouble-fabs
FAIL: math/test-ldouble-fdim
FAIL: math/test-ldouble-finite-ceil
FAIL: math/test-ldouble-finite-floor
FAIL: math/test-ldouble-finite-pow
FAIL: math/test-ldouble-finite-scalb
FAIL: math/test-ldouble-floor
FAIL: math/test-ldouble-fmax
FAIL: math/test-ldouble-fmod
FAIL: math/test-ldouble-frexp
FAIL: math/test-ldouble-hypot
FAIL: math/test-ldouble-lgamma
FAIL: math/test-ldouble-pow
FAIL: math/test-ldouble-remainder
FAIL: math/test-ldouble-scalb
FAIL: math/test-ldouble-sin
FAIL: math/test-ldouble-sincos
FAIL: math/test-ldouble-sinh
FAIL: math/test-ldouble-tan
FAIL: math/test-ldouble-tgamma
FAIL: math/test-nearbyint-except
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers   
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers  
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers 
FAIL: nptl/tst-cancel21-static
FAIL: nptl/tst-thread_local1
UNSUPPORTED: nss/tst-nss-files-hosts-erange
UNSUPPORTED: nss/tst-nss-files-hosts-multi 
UNSUPPORTED: posix/tst-sysconf-empty-chroot
UNSUPPORTED: resolv/tst-resolv-res_init
UNSUPPORTED: resolv/tst-resolv-res_init-thread
UNSUPPORTED: resolv/tst-resolv-threads
FAIL: stdio-common/tst-long-dbl-fphex
UNSUPPORTED: stdlib/tst-getrandom
FAIL: stdlib/tst-makecontext3
FAIL: stdlib/tst-quick_exit
FAIL: stdlib/tst-thread-quick_exit
FAIL: string/stratcliff
FAIL: string/test-rawmemchr
UNSUPPORTED: sunrpc/tst-svc_register
Summary of test results:
    136 FAIL
   3934 PASS
     14 UNSUPPORTED
     29 XFAIL
      2 XPASS

tst-backtrace4 is known to fail on IA64 due to limited backtrace output; https://sourceware.org/ml/libc-alpha/2013-12/msg00877.html
tst-cancel21-static crash is unknown
tst-thread_local1 is due the fact the compiler used on build provides a more updated libstdc++.so.6 which leads to following issues when linking the test:

/home/azanella/glibc/glibc-git-build/nptl/tst-thread_local1: /usr/lib/ia64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.7' not found (required by /home/azanella/glibc/glibc-git-build/nptl/tst-thread_local1)
/home/azanella/glibc/glibc-git-build/nptl/tst-thread_local1: /usr/lib/ia64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by /home/azanella/glibc/glibc-git-build/nptl/tst-thread_local1)
/home/azanella/glibc/glibc-git-build/nptl/tst-thread_local1: /usr/lib/ia64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by /home/azanella/glibc/glibc-git-build/nptl/tst-thread_local1)

tst-long-dbl-fphex fails because IA64 returns 0xc.cp+1/0XC.CP+1.
tst-makecontext3 fails as makecontext is known to be limited on IA64; https://sourceware.org/bugzilla/show_bug.cgi?id=14250
tst-quick_exit and tst-thread-quick_exit fails at runtime with an issu similar to tst-thread_local1:

/home/azanella/glibc/glibc-git-build/stdlib/tst-quick_exit: /usr/lib/ia64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.7' not found (required by /home/azanella/glibc/glibc-git-build/stdlib/tst-quick_exit)
/home/azanella/glibc/glibc-git-build/stdlib/tst-thread-quick_exit: /usr/lib/ia64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.7' not found (required by /home/azanella/glibc/glibc-git-build/stdlib/tst-thread-quick_exit)

stratcliff fails due rawmemchr:

rawmemchr flunked for outer = 16376, middle = 16376
rawmemchr flunked for outer = 16376, middle = 16377
rawmemchr flunked for outer = 16376, middle = 16378
[...]

test-rawmemchr fails with:

/home/azanella/glibc/glibc-git-build/string/test-rawmemchr: Iteration 668 - wrong result in function rawmemchr (14, 130, 498, 491) (nil) != 0x20000000002ebff9, p 0x20000000002ebe00
/home/azanella/glibc/glibc-git-build/string/test-rawmemchr: Iteration 968 - wrong result in function rawmemchr (12, 201, 494, 485) (nil) != 0x20000000002ebff1, p 0x20000000002ebe00
/home/azanella/glibc/glibc-git-build/string/test-rawmemchr: Iteration 1112 - wrong result in function rawmemchr (7, 42, 504, 503) (nil) != 0x20000000002ebffe, p 0x20000000002ebe00
/home/azanella/glibc/glibc-git-build/string/test-rawmemchr: Iteration 2412 - wrong result in function rawmemchr (0, 21, 510, 509) (nil) != 0x20000000002ebffd, p 0x20000000002ebe00
/home/azanella/glibc/glibc-git-build/string/test-rawmemchr: Iteration 2647 - wrong result in function rawmemchr (15, 129, 486, 483) (nil) != 0x20000000002ebff2, p 0x20000000002ebe00
/home/azanella/glibc/glibc-git-build/string/test-rawmemchr: Iteration 3135 - wrong result in function rawmemchr (6, 171, 504, 496) (nil) != 0x20000000002ebff6, p 0x20000000002ebe00
[...]

all the math/ tests probably match some open bugs on the topic, or need some baselines updated, or are limitations in the IA64 optimized libm.

3.7. M68K

Build system: ARAnyM 1.0.2, openSUSE Tumbleweed, gcc7-7.2.1+r253932, binutils-2.29.1, Linux 4.13.4 (Andreas Schwab)

FAIL: elf/tst-prelink-cmp
FAIL: intl/tst-gettext
FAIL: malloc/tst-alloc_buffer
FAIL: malloc/tst-realloc
FAIL: nptl/tst-barrier2
FAIL: nss/tst-nss-files-hosts-multi
FAIL: posix/tst-getaddrinfo4
FAIL: posix/tst-getaddrinfo5
FAIL: rt/tst-mqueue3
FAIL: rt/tst-mqueue5
FAIL: stdio-common/bug22

3.8. MicroBlaze

Build system: GCC 6.2.0, binutils 2.25.2, Linux 4.9 (Nagaraju Mekala)

FAIL: debug/tst-backtrace2
FAIL: debug/tst-backtrace3
FAIL: debug/tst-backtrace4
FAIL: debug/tst-backtrace5
FAIL: debug/tst-backtrace6
FAIL: debug/tst-chk2
FAIL: debug/tst-chk3
FAIL: debug/tst-chk5
FAIL: debug/tst-chk6
FAIL: debug/tst-lfschk2
FAIL: debug/tst-lfschk3
FAIL: debug/tst-lfschk5
FAIL: debug/tst-lfschk6
FAIL: debug/tst-longjmp_chk
FAIL: dlfcn/tststatic
FAIL: dlfcn/tststatic2
FAIL: dlfcn/tststatic3
FAIL: dlfcn/tststatic4
FAIL: dlfcn/tststatic5
FAIL: elf/check-execstack
FAIL: elf/circleload1
FAIL: elf/constload1
FAIL: elf/dblload
FAIL: elf/dblunload
FAIL: elf/lateglobal
FAIL: elf/nodelete2
FAIL: elf/order-cmp
FAIL: elf/order2-cmp
FAIL: elf/reldep6
FAIL: elf/resolvfail
FAIL: elf/tst-addr1
FAIL: elf/tst-align2
FAIL: elf/tst-array1-cmp
FAIL: elf/tst-array1-static
FAIL: elf/tst-array1-static-cmp
FAIL: elf/tst-array2-cmp
FAIL: elf/tst-array3-cmp
FAIL: elf/tst-array4-cmp
FAIL: elf/tst-array5-static
FAIL: elf/tst-array5-static-cmp
FAIL: elf/tst-audit1
FAIL: elf/tst-audit11
FAIL: elf/tst-audit12
FAIL: elf/tst-audit2
FAIL: elf/tst-audit8
FAIL: elf/tst-audit9
FAIL: elf/tst-dl-iter-static
FAIL: elf/tst-env-setuid
FAIL: elf/tst-env-setuid-tunables
FAIL: elf/tst-global1
FAIL: elf/tst-initorder-cmp
FAIL: elf/tst-initorder2-cmp
FAIL: elf/tst-latepthread
FAIL: elf/tst-ldconfig-X
FAIL: elf/tst-leaks1-mem
FAIL: elf/tst-leaks1-static
FAIL: elf/tst-leaks1-static-mem
FAIL: elf/tst-linkall-static
FAIL: elf/tst-ptrguard1-static
FAIL: elf/tst-stackguard1-static
FAIL: elf/tst-tls1
FAIL: elf/tst-tls1-static
FAIL: elf/tst-tls10
FAIL: elf/tst-tls14
FAIL: elf/tst-tls2
FAIL: elf/tst-tls2-static
FAIL: elf/tst-tls3
FAIL: elf/tst-tls9-static
FAIL: elf/tst-tlsalign
FAIL: elf/tst-tlsalign-extern-static
FAIL: elf/tst-tlsalign-static
FAIL: iconvdata/iconv-test
FAIL: iconvdata/tst-tables
FAIL: libio/tst-widetext
FAIL: localedata/bug-setlocale1-static
FAIL: localedata/tst-fmon
FAIL: localedata/tst-langinfo-static
FAIL: malloc/tst-malloc-usable-static
FAIL: malloc/tst-malloc-usable-static-tunables
FAIL: malloc/tst-mallocfork2
FAIL: math/test-fpucw-ieee-static
FAIL: math/test-fpucw-static
FAIL: math/test-signgam-uchar-init-static
FAIL: math/test-signgam-uchar-static
FAIL: math/test-signgam-uint-init-static
FAIL: math/test-signgam-uint-static
FAIL: math/test-signgam-ullong-init-static
FAIL: math/test-signgam-ullong-static
FAIL: misc/tst-atomic
FAIL: misc/tst-atomic-long
FAIL: misc/tst-empty
FAIL: nptl/tst-cancel17
FAIL: nptl/tst-cancel21-static
FAIL: nptl/tst-cancel24
FAIL: nptl/tst-cancel24-static
FAIL: nptl/tst-cancel7
FAIL: nptl/tst-cancelx16
FAIL: nptl/tst-cancelx17
FAIL: nptl/tst-cancelx18
FAIL: nptl/tst-cancelx4
FAIL: nptl/tst-cancelx5
FAIL: nptl/tst-cancelx7
FAIL: nptl/tst-cleanup0-cmp
FAIL: nptl/tst-cond24
FAIL: nptl/tst-cond25
FAIL: nptl/tst-cond8-static
FAIL: nptl/tst-execstack
FAIL: nptl/tst-fini1
FAIL: nptl/tst-locale1
FAIL: nptl/tst-locale2
FAIL: nptl/tst-mutex8-static
FAIL: nptl/tst-mutexpi8-static
FAIL: nptl/tst-oncex4
FAIL: nptl/tst-pthread-getattr
FAIL: nptl/tst-sem11-static
FAIL: nptl/tst-sem12-static
FAIL: nptl/tst-stack4
FAIL: nptl/tst-stackguard1-static
FAIL: nptl/tst-thread_local1
FAIL: nptl/tst-tls2
FAIL: nptl/tst-vfork1
FAIL: nptl/tst-vfork2
FAIL: nss/tst-field
FAIL: posix/globtest
FAIL: posix/tst-exec-static
FAIL: posix/tst-spawn-static
UNSUPPORTED: posix/tst-sysconf-empty-chroot
FAIL: posix/wordexp-tst
FAIL: resolv/mtrace-tst-resolv-res_ninit
FAIL: resolv/tst-resolv-res_ninit
FAIL: resolv/tst-resolv-threads
FAIL: rt/tst-mqueue8x
FAIL: setjmp/tst-setjmp-static
FAIL: stdio-common/bug22
FAIL: stdio-common/tst-setvbuf1-cmp
FAIL: stdio-common/tst-unbputc
FAIL: stdlib/tst-fmtmsg
FAIL: stdlib/tst-quick_exit
FAIL: stdlib/tst-secure-getenv
FAIL: stdlib/tst-setcontext2
UNSUPPORTED: stdlib/tst-setcontext3
FAIL: stdlib/tst-thread-quick_exit
FAIL: string/tst-xbzero-opt
FAIL: sunrpc/bug20790
FAIL: nptl/test-cond-printers
FAIL: nptl/test-condattr-printers
FAIL: nptl/test-mutex-printers
FAIL: nptl/test-mutexattr-printers
FAIL: nptl/test-rwlock-printers
FAIL: nptl/test-rwlockattr-printers
FAIL: misc/test-errno-linux
FAIL: nptl/tst-cancel20
FAIL: nptl/tst-cancel21
FAIL: nptl/tst-cancelx20
FAIL: nptl/tst-cancelx21
FAIL: nptl/tst-signal6

Summary of test results:
    154 FAIL
   3194 PASS
      2 UNSUPPORTED
     31 XFAIL

40 of the tests are failing due to time out (make check was run with default TIMEOUTFACTOR).

3.9. MIPS

Build system: GCC 6.3.1 20170703, binutils 2.28.51.20170703, Linux 3.16 (LE hard-float), 3.14 (BE soft-float) (Joseph Myers)

Seen for all ABIs tested:

FAIL: io/tst-open-tmpfile
FAIL: misc/tst-tsearch
FAIL: nptl/test-cond-printers
FAIL: nptl/test-condattr-printers
FAIL: nptl/test-mutex-printers
FAIL: nptl/test-mutexattr-printers
FAIL: nptl/test-rwlock-printers
FAIL: nptl/test-rwlockattr-printers
FAIL: nptl/tst-create-detached
FAIL: nptl/tst-robust-fork
FAIL: nptl/tst-stack4
FAIL: resolv/tst-resolv-basic
FAIL: stdio-common/bug22
FAIL: stdio-common/test-vfprintf
FAIL: string/tst-cmp
FAIL: sunrpc/bug20790
FAIL: timezone/tst-tzset

misc/tst-tsearch, nptl/tst-create-detached, nptl/tst-robust-fork, nptl/tst-stack4, string/tst-cmp time out.
resolv/tst-resolv-basic failure as for ARM.

Seen for o32, both BE soft-float and LE hard-float:

FAIL: nptl/tst-rwlock15

nptl/tst-rwlock15 failure cause unknown.

Likely varying at random:

FAIL: iconvdata/mtrace-tst-loading
FAIL: iconvdata/tst-loading
FAIL: rt/tst-cpuclock2

iconvdata tests time out.

Seen for n32 and n64, both BE soft-float and LE hard-float:

FAIL: grp/testgrp
FAIL: nss/bug17079
FAIL: posix/globtest
FAIL: pwd/tst-getpw

Cause unknown.

3.10. Nios II

Build system: GCC 7.1.1, binutils 2.26.51, Linux headers 4.7 (Chung-Lin Tang)

FAIL: elf/tst-rtld-load-self
FAIL: iconvdata/tst-tables
FAIL: io/ftwtest
FAIL: malloc/tst-dynarray-fail-mem
FAIL: malloc/tst-dynarray-fail
FAIL: malloc/tst-malloc-thread-fail
FAIL: math/atest-sincos
FAIL: math/test-nearbyint-except
FAIL: misc/tst-clone2
FAIL: nptl/test-cond-printers
FAIL: nptl/test-condattr-printers
FAIL: nptl/test-mutex-printers
FAIL: nptl/test-mutexattr-printers
FAIL: nptl/test-rwlock-printers
FAIL: nptl/test-rwlockattr-printers
FAIL: nptl/tst-cancel7
FAIL: nptl/tst-cancelx7
FAIL: nptl/tst-cond12
FAIL: nptl/tst-getpid1
FAIL: nptl/tst-robust-fork
FAIL: nptl/tst-stack4
FAIL: nss/tst-cancel-getpwuid_r
FAIL: nss/tst-nss-getpwent
FAIL: posix/tst-sysconf-empty-chroot
FAIL: resolv/mtrace-tst-resolv-res_ninit
FAIL: resolv/tst-resolv-res_init-thread
FAIL: resolv/tst-resolv-res_init
FAIL: resolv/tst-resolv-res_ninit
FAIL: resolv/tst-resolv-threads
FAIL: stdio-common/bug22
FAIL: stdio-common/test-vfprintf
FAIL: stdio-common/tst-sprintf
FAIL: string/test-strcasecmp
FAIL: string/test-strncasecmp
FAIL: string/tst-cmp
FAIL: sunrpc/bug20790
FAIL: sunrpc/tst-svc_register
FAIL: support/tst-support_record_failure-2
FAIL: timezone/tst-tzset

Test board does not have python immediately available, likely cause of nptl/*-printers fails
posix/tst-sysconf-empty-chroot: test doesn't support uniprocessors.
resolv/*tst-resolv-* and sunrpc/tst-svc_register related to:

warning: could not become root outside namespace (Operation not permitted)
warning: unshare (CLONE_NEWUTS) failed: Operation not permitted
warning: could not enter network namespace

malloc/tst-dynarray-fail*, misc/tst-clone2, nptl/tst-getpid1, support/tst-support_record_failure-2: unknown.
Rest known from previous releases.

3.11. PowerPC (32-bit soft-float)

Build system: (soft-float) GCC 6.3.1 20170703, binutils 2.28.51.20170703, Linux 3.10.38 (Joseph Myers)

XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
FAIL: io/ftwtest
UNSUPPORTED: io/tst-open-tmpfile
FAIL: math/test-double-nexttoward
FAIL: math/test-float-nexttoward
FAIL: math/test-ildouble-remainder
FAIL: math/test-ldouble-acos
FAIL: math/test-ldouble-acosh
FAIL: math/test-ldouble-asin
FAIL: math/test-ldouble-asinh
FAIL: math/test-ldouble-atan
FAIL: math/test-ldouble-atan2
FAIL: math/test-ldouble-atanh
FAIL: math/test-ldouble-cabs
FAIL: math/test-ldouble-cacos
FAIL: math/test-ldouble-cacosh
FAIL: math/test-ldouble-carg
FAIL: math/test-ldouble-casinh
FAIL: math/test-ldouble-catan
FAIL: math/test-ldouble-catanh
FAIL: math/test-ldouble-cbrt
FAIL: math/test-ldouble-ccos
FAIL: math/test-ldouble-ccosh
FAIL: math/test-ldouble-cexp
FAIL: math/test-ldouble-clog
FAIL: math/test-ldouble-clog10
FAIL: math/test-ldouble-cos
FAIL: math/test-ldouble-cpow
FAIL: math/test-ldouble-csin
FAIL: math/test-ldouble-csinh
FAIL: math/test-ldouble-csqrt
FAIL: math/test-ldouble-erf
FAIL: math/test-ldouble-erfc
FAIL: math/test-ldouble-expm1
FAIL: math/test-ldouble-fdim
FAIL: math/test-ldouble-finite-remainder
FAIL: math/test-ldouble-fma
FAIL: math/test-ldouble-fmaxmag
FAIL: math/test-ldouble-fminmag
FAIL: math/test-ldouble-frexp
FAIL: math/test-ldouble-hypot
FAIL: math/test-ldouble-j0
FAIL: math/test-ldouble-j1
FAIL: math/test-ldouble-jn
FAIL: math/test-ldouble-log
FAIL: math/test-ldouble-log10
FAIL: math/test-ldouble-log1p
FAIL: math/test-ldouble-log2
FAIL: math/test-ldouble-nextafter
FAIL: math/test-ldouble-nextdown
FAIL: math/test-ldouble-nexttoward
FAIL: math/test-ldouble-nextup
FAIL: math/test-ldouble-pow
FAIL: math/test-ldouble-remainder
FAIL: math/test-ldouble-scalbln
FAIL: math/test-ldouble-scalbn
FAIL: math/test-ldouble-sin
FAIL: math/test-ldouble-sincos
FAIL: math/test-ldouble-sinh
FAIL: math/test-ldouble-sqrt
FAIL: math/test-ldouble-tan
FAIL: math/test-ldouble-tanh
FAIL: math/test-ldouble-tgamma
FAIL: math/test-ldouble-y0
FAIL: math/test-ldouble-y1
FAIL: math/test-ldouble-yn
FAIL: math/test-nearbyint-except-2
UNSUPPORTED: misc/tst-set_ppr
FAIL: nptl/test-cond-printers
FAIL: nptl/test-condattr-printers
FAIL: nptl/test-mutex-printers
FAIL: nptl/test-mutexattr-printers
FAIL: nptl/test-rwlock-printers
FAIL: nptl/test-rwlockattr-printers
FAIL: nptl/tst-create-detached
FAIL: nptl/tst-rwlock19
FAIL: nptl/tst-stack4
FAIL: posix/tst-posix_fadvise64
FAIL: resolv/tst-resolv-basic
UNSUPPORTED: resolv/tst-resolv-res_init
UNSUPPORTED: resolv/tst-resolv-res_init-thread
FAIL: stdio-common/bug22
FAIL: stdio-common/test-vfprintf
UNSUPPORTED: stdlib/tst-getrandom
FAIL: sunrpc/bug20790
UNSUPPORTED: sunrpc/tst-svc_register
FAIL: timezone/tst-tzset
Summary of test results:
     80 FAIL
   3624 PASS
      6 UNSUPPORTED
     29 XFAIL
      2 XPASS

math/ tests fail because of IBM long double issues, in particular GCC bug 64811 (float and double failures are for nexttoward, so long double is involved there as well).
nptl/tst-create-detached, nptl/tst-rwlock19, nptl/tst-stack4 time out.
posix/tst-posix_fadvise64 failure results from a kernel bug with 32-bit powerpc kernels.
resolv/tst-resolv-basic failure as for ARM.

3.12. PowerPC (32-bit hard-float)

Build system: Ubuntu 16.04, gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4), GNU Binutils for Ubuntu 2.26.1, Linux 4.4.0-79-powerpc64-smp

XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
UNSUPPORTED: math/test-fesetexcept-traps
UNSUPPORTED: math/test-fexcept-traps
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
FAIL: stdlib/tst-strfmon_l
Summary of test results:
      1 FAIL
   3744 PASS
      8 UNSUPPORTED
     29 XFAIL
      2 XPASS

3.13. PowerPC (64-bit hard-float)

Build system: RHEL7 gcc version 7.1.1 20170526 (Red Hat 7.1.1-2) (GCC) GNU ld version 2.28-5.el7 3.10.0-663.el7.ppc64 (DJ Delorie)

XPASS: conform/UNIX98/ndbm.h/linknamespace
XPASS: conform/XOPEN2K/ndbm.h/linknamespace
XPASS: conform/XOPEN2K8/ndbm.h/linknamespace
XPASS: conform/XPG42/ndbm.h/linknamespace
XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
UNSUPPORTED: io/tst-open-tmpfile
UNSUPPORTED: math/test-fesetexcept-traps
UNSUPPORTED: math/test-fexcept-traps
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
UNSUPPORTED: nptl/tst-thread_local1
UNSUPPORTED: stdlib/tst-getrandom
UNSUPPORTED: stdlib/tst-quick_exit
UNSUPPORTED: stdlib/tst-thread-quick_exit
Summary of test results:
   3734 PASS
     13 UNSUPPORTED
     25 XFAIL
      6 XPASS

The io/tst-open-tmpfile test is unsupported because of a lack of kernel support.
The C++ support in RHEL7 lacks thread local so the related thread local tests are disabled.
The *printers tests are unsupported because of pexpect < 4.0
test-fesetexcept-traps and test-fexcept-traps are unsupported because:
```
setting exceptions traps, cannot test on this architecture
```

3.14. PowerPC64LE (64-bit hard-float)

Build system: Debian 9, gcc version 6.3.0 20170516 (Debian 6.3.0-18), GNU ld (GNU Binutils for Debian) 2.28, GNU/Linux 4.9.30-2 (2017-06-12) ppc64le

XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
UNSUPPORTED: math/test-fesetexcept-traps
UNSUPPORTED: math/test-fexcept-traps
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
UNSUPPORTED: posix/tst-sysconf-empty-chroot
UNSUPPORTED: resolv/tst-resolv-res_init
UNSUPPORTED: resolv/tst-resolv-res_init-thread
UNSUPPORTED: resolv/tst-resolv-threads
FAIL: stdlib/tst-strfmon_l
UNSUPPORTED: sunrpc/tst-svc_register
Summary of test results:
      1 FAIL
   4103 PASS
     13 UNSUPPORTED
     29 XFAIL
      2 XPASS

The failure on stdlib/tst-strfmon_l appeared with commit ID 480af555f35201a646531cfd7c68a58905edba90.

3.15. S/390 (32-bit)

Build system: gcc version 7.1.0, GNU Binutils version 2.28.51, Linux 4.10 (Stefan Liebler)

XPASS: conform/UNIX98/ndbm.h/linknamespace
XPASS: conform/XOPEN2K/ndbm.h/linknamespace
XPASS: conform/XOPEN2K8/ndbm.h/linknamespace
XPASS: conform/XPG42/ndbm.h/linknamespace
FAIL: misc/tst-preadvwritev2
FAIL: misc/tst-preadvwritev64v2
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
Summary of test results:
      2 FAIL
   3726 PASS
      6 UNSUPPORTED
     27 XFAIL
      4 XPASS

Build system: gcc version 6.4.0, GNU Binutils version 2.28.51, Linux 4.10 (Stefan Liebler)

XPASS: conform/UNIX98/ndbm.h/linknamespace
XPASS: conform/XOPEN2K/ndbm.h/linknamespace
XPASS: conform/XOPEN2K8/ndbm.h/linknamespace
XPASS: conform/XPG42/ndbm.h/linknamespace
FAIL: math/test-idouble-setpayloadsig
FAIL: math/test-ifloat-setpayloadsig
FAIL: math/test-ildouble-setpayloadsig
FAIL: misc/tst-preadvwritev2
FAIL: misc/tst-preadvwritev64v2
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
Summary of test results:
      5 FAIL
   3723 PASS
      6 UNSUPPORTED
     27 XFAIL
      4 XPASS

For the math tests, see test fail descriptions for S/390 (64bit).
The misc/tst-preadvwrite[64]v2 tests are failing due to a bug in kernel compat syscalls. It is fixed with Linux 4.12. See post [PATCH] posix: Add invalid flags test for p{write,read}v2 on mailing-list.

3.16. S/390 (64-bit)

Build system: RHEL7 gcc version 7.1.1 20170526 (Red Hat 7.1.1-2) (GCC), GNU ld version 2.28-5.el7, 3.10.0-663.el7.s390x (DJ Delorie)

XPASS: conform/UNIX98/ndbm.h/linknamespace
XPASS: conform/XOPEN2K/ndbm.h/linknamespace
XPASS: conform/XOPEN2K8/ndbm.h/linknamespace
XPASS: conform/XPG42/ndbm.h/linknamespace
UNSUPPORTED: io/tst-open-tmpfile
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
FAIL: nptl/tst-create-detached
UNSUPPORTED: nptl/tst-thread_local1
UNSUPPORTED: stdlib/tst-getrandom
UNSUPPORTED: stdlib/tst-quick_exit
UNSUPPORTED: stdlib/tst-thread-quick_exit
Summary of test results:
      1 FAIL
   3722 PASS
     11 UNSUPPORTED
     27 XFAIL
      4 XPASS

The io/tst-open-tmpfile test is unsupported because of a lack of kernel support.
The C++ support in RHEL7 lacks thread local so the related thread local tests are disabled.
The system compiler C++ support doesn't include thread local so the thread local tests are unsupported.
The *printers tests are unsupported because of pexpect < 4.0
Failure in tst-create-detached is just a timeout. Test runs successfully when timeout is extended.
The io/tst-open-tmpfile test is unsupported because of missing kernel features.
getrandom() is not supported by this kernel.

Build system: gcc version 7.1.0, GNU Binutils version 2.28.51, Linux 4.10 (Stefan Liebler)

XPASS: conform/UNIX98/ndbm.h/linknamespace
XPASS: conform/XOPEN2K/ndbm.h/linknamespace
XPASS: conform/XOPEN2K8/ndbm.h/linknamespace
XPASS: conform/XPG42/ndbm.h/linknamespace
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
Summary of test results:
   3729 PASS
      6 UNSUPPORTED
     27 XFAIL
      4 XPASS

Build system: gcc version 6.4.0, GNU Binutils version 2.28.51, Linux 4.10 (Stefan Liebler)

XPASS: conform/UNIX98/ndbm.h/linknamespace
XPASS: conform/XOPEN2K/ndbm.h/linknamespace
XPASS: conform/XOPEN2K8/ndbm.h/linknamespace
XPASS: conform/XPG42/ndbm.h/linknamespace
FAIL: math/test-double-pow
FAIL: math/test-idouble-pow
FAIL: math/test-idouble-setpayloadsig
FAIL: math/test-ifloat-setpayloadsig
FAIL: math/test-ildouble-setpayloadsig
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
Summary of test results:
      5 FAIL
   3724 PASS
      6 UNSUPPORTED
     27 XFAIL
      4 XPASS

The math/test-* are failing due to GCC Bug 78857 - S390: Do not use load-and-test floating-point instruction to compare against 0.0 as SNaN is converted to QNaN.

3.17. SH

3.18. SPARC (32-bit)

Build system: GCC 7.1.1 20170719, binutils 2.28.90.20170719, Linux 4.12.0+ (Adhemerval Zanella) System info: UltraSparc T5 (Niagara5)

FAIL: conform/ISO/stdio.h/linknamespace
FAIL: conform/ISO11/stdio.h/linknamespace
FAIL: conform/ISO11/wchar.h/linknamespace
FAIL: conform/ISO99/stdio.h/linknamespace
FAIL: conform/ISO99/wchar.h/linknamespace
FAIL: conform/POSIX/stdio.h/linknamespace
FAIL: conform/POSIX2008/monetary.h/linknamespace
FAIL: conform/POSIX2008/stdio.h/linknamespace
FAIL: conform/POSIX2008/wchar.h/linknamespace
FAIL: conform/UNIX98/monetary.h/linknamespace
FAIL: conform/UNIX98/stdio.h/linknamespace
FAIL: conform/UNIX98/syslog.h/linknamespace
FAIL: conform/UNIX98/wchar.h/linknamespace
FAIL: conform/XOPEN2K/monetary.h/linknamespace
FAIL: conform/XOPEN2K/stdio.h/linknamespace
FAIL: conform/XOPEN2K/syslog.h/linknamespace
FAIL: conform/XOPEN2K/wchar.h/linknamespace
FAIL: conform/XOPEN2K8/monetary.h/linknamespace
FAIL: conform/XOPEN2K8/stdio.h/linknamespace
FAIL: conform/XOPEN2K8/syslog.h/linknamespace
FAIL: conform/XOPEN2K8/wchar.h/linknamespace
FAIL: conform/XPG4/monetary.h/linknamespace
FAIL: conform/XPG4/stdio.h/linknamespace
FAIL: conform/XPG42/monetary.h/linknamespace
FAIL: conform/XPG42/stdio.h/linknamespace
FAIL: conform/XPG42/syslog.h/linknamespace
FAIL: intl/tst-gettext
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
FAIL: stdlib/tst-makecontext
Summary of test results:
     28 FAIL
   3703 PASS
      6 UNSUPPORTED
     31 XFAIL

All link namespace failures are due nldbl-compat.o pulling additional objects. However these symbols pulled do not seem to be wrong one, for instance conform/ISO/stdio.h/linknamespace.out shows:

[initial] __nldbl__IO_vfprintf -> [libc.a(nldbl-compat.o)] __vsyslog_chk -> [libc.a(syslog.o)] closelog

So additional debugging will be required to see if it is a false positive or an actual bug. Cross-compiling tests does not show this issue.

3.19. SPARC (64-bit)

Build system: GCC 6.3.1 20170510, binutils 2.28 (debian), Linux 4.12.0+ (Adhemerval Zanella) System info: UltraSparc T5 (Niagara5)

FAIL: intl/tst-gettext
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
Summary of test results:
      1 FAIL
   3730 PASS
      6 UNSUPPORTED
     31 XFAIL

3.20. TILE-Gx (64-bit and 32-bit)

3.21. TILEPro

3.22. x86 (32-bit, Linux)

Build system: RHEL7 gcc version 7.1.1 20170526 (Red Hat 7.1.1-2) (GCC) GNU ld version 2.28-5.el7 3.10.0-663.el7.x86_64 (DJ Delorie)

XPASS: conform/UNIX98/ndbm.h/linknamespace
XPASS: conform/XOPEN2K/ndbm.h/linknamespace
XPASS: conform/XOPEN2K8/ndbm.h/linknamespace
XPASS: conform/XPG42/ndbm.h/linknamespace
FAIL: debug/tst-ssp-1
XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
UNSUPPORTED: io/tst-open-tmpfile
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
UNSUPPORTED: nptl/tst-thread_local1
UNSUPPORTED: stdlib/tst-quick_exit
UNSUPPORTED: stdlib/tst-thread-quick_exit
Summary of test results:
      1 FAIL
   4101 PASS
     10 UNSUPPORTED
     25 XFAIL
      6 XPASS

The io/tst-open-tmpfile test is unsupported because of a lack of kernel support.
The C++ support in RHEL7 lacks thread local so the related thread local tests are disabled.
The *printers tests are unsupported because of pexpect < 4.0

tst-ssp-1 fails with:

Incorrect signal from child: got `Segmentation fault', need `Aborted'

3.23. x86_64 (64-bit, Linux)

Build system: RHEL7 gcc version 7.1.1 20170526 (Red Hat 7.1.1-2) (GCC) GNU ld version 2.28-5.el7 3.10.0-663.el7.x86_64 (DJ Delorie)

XPASS: conform/UNIX98/ndbm.h/linknamespace
XPASS: conform/XOPEN2K/ndbm.h/linknamespace
XPASS: conform/XOPEN2K8/ndbm.h/linknamespace
XPASS: conform/XPG42/ndbm.h/linknamespace
UNSUPPORTED: elf/tst-audit10
UNSUPPORTED: elf/tst-avx512
XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
UNSUPPORTED: io/tst-open-tmpfile
UNSUPPORTED: math/test-double-libmvec-alias-avx2
UNSUPPORTED: math/test-double-libmvec-alias-avx2-main
UNSUPPORTED: math/test-double-libmvec-alias-avx512
UNSUPPORTED: math/test-double-libmvec-alias-avx512-main
UNSUPPORTED: math/test-double-libmvec-sincos-avx2
UNSUPPORTED: math/test-double-libmvec-sincos-avx512
UNSUPPORTED: math/test-float-libmvec-alias-avx2
UNSUPPORTED: math/test-float-libmvec-alias-avx2-main
UNSUPPORTED: math/test-float-libmvec-alias-avx512
UNSUPPORTED: math/test-float-libmvec-alias-avx512-main
UNSUPPORTED: math/test-float-libmvec-sincosf-avx2
UNSUPPORTED: math/test-float-libmvec-sincosf-avx512
UNSUPPORTED: nptl/test-cond-printers
UNSUPPORTED: nptl/test-condattr-printers
UNSUPPORTED: nptl/test-mutex-printers
UNSUPPORTED: nptl/test-mutexattr-printers
UNSUPPORTED: nptl/test-rwlock-printers
UNSUPPORTED: nptl/test-rwlockattr-printers
UNSUPPORTED: nptl/tst-thread_local1
UNSUPPORTED: stdlib/tst-quick_exit
UNSUPPORTED: stdlib/tst-thread-quick_exit
Summary of test results:
   4178 PASS
     24 UNSUPPORTED
     25 XFAIL
      6 XPASS

The lack of AVX and AVX2 on this hardware means that tst-audit10 and all the *avx* and *avx2* tests are unsupported.
The io/tst-open-tmpfile test is unsupported because of a lack of kernel support.
The C++ support in RHEL7 lacks thread local so the related thread local tests are disabled.
The *printers tests are unsupported because of pexpect < 4.0

3.24. x86_64 (x32, Linux)

Build system: gcc version 6.3.1, GNU Binutils version 2.29.51, Linux 4.11.9 (H.J. Lu)

FAIL: elf/tst-leaks1-mem
FAIL: nptl/tst-setuid2

* elf/tst-leaks1-mem failure is due to bug 14681.

3.25. x86 (32-bit, Hurd)

4. Packaging Changes

4.1. Removal of 'xlocale.h'

The nonstandard header xlocale.h has been removed in this release. It was never intended to be included directly by programs other than glibc itself, and it was a strict subset of the standard header locale.h. We know that a number of programs do include it, but because it has never been part of any other C library, programs that use it are probably testing for its existence with autoconf or a similar tool, and should not fail to compile.

Packagers need to watch out for cases where a library installs headers that assume xlocale.h is available. Programs that use those headers will fail to build after glibc is updated to 2.26. This is known to be an issue for Perl extension modules (see Red Hat bug 1464244); Perl checks for xlocale.h when it is built, so this particular case can be resolved by rebuilding Perl against glibc 2.26.

4.2. Removal of 'struct ucontext'

The ucontext_t type has a tag struct ucontext. As with previous such issues for siginfo_t and stack_t, this tag is not permitted by POSIX (is not in a reserved namespace), and so namespace conformance means breaking C++ name mangling for this type. In this case, the type does need to have some tag rather than just a typedef name, because it includes a pointer to itself. We use a struct ucontext_t as the new tag, so the type is mangled as ucontext_t (the POSIX *_t reservation applies in all namespaces, not just the namespace of ordinary identifiers). Another reserved name such as struct __ucontext could of course be used.

Packagers need to watch out for cases where application and library code uses struct ucontext and change such references to the POSIX reserved ucontext_t.