[Bug nptl/22636] PTHREAD_STACK_MIN is too small on x86-64

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=22636

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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=08c6e95234c60a5c2f37532d1111acf084f39345

commit 08c6e95234c60a5c2f37532d1111acf084f39345
Author: Florian Weimer <fweimer@redhat.com>
Date:   Thu Jan 11 13:13:28 2018 +0100

    csu: Update __libgcc_s_init comment

    Reviewed-by: Carlos O'Donell <carlos@redhat.com>

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d8b778907e5270fdeb70459842ffbc20bd2ca5e1

commit d8b778907e5270fdeb70459842ffbc20bd2ca5e1
Author: Florian Weimer <fweimer@redhat.com>
Date:   Thu Jan 11 13:13:14 2018 +0100

    nptl: Add tst-minstack-cancel, tst-minstack-exit [BZ #22636]

    I verified that without the guard accounting change in commit
    630f4cc3aa019ede55976ea561f1a7af2f068639 (Fix stack guard size
    accounting) and RTLD_NOW for libgcc_s introduced by commit
    f993b8754080ac7572b692870e926d8b493db16c (nptl: Open libgcc.so with
    RTLD_NOW during pthread_cancel), the tst-minstack-cancel test fails on
    an AVX-512F machine.  tst-minstack-exit still passes, and either of
    the mentioned commit by itself frees sufficient stack space to make
    tst-minstack-cancel pass, too.

    Reviewed-by: Carlos O'Donell <carlos@redhat.com>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                          |   11 ++++++
 nptl/Makefile                                      |    2 +-
 .../tst-minstack-cancel.c                          |   34 ++++++++++++-------
 .../tst-minstack-exit.c                            |   32 +++++++++++-------
 sysdeps/gnu/unwind-resume.c                        |    8 +++-
 5 files changed, 58 insertions(+), 29 deletions(-)
 copy sysdeps/unix/sysv/linux/tst-sysconf-iov_max.c =>
nptl/tst-minstack-cancel.c (58%)
 copy sysdeps/unix/sysv/linux/tst-sysconf-iov_max.c => nptl/tst-minstack-exit.c
(58%)

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