[Bug libc/20198] quick_exit incorrectly destroys C++11 thread objects.

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https://sourceware.org/bugzilla/show_bug.cgi?id=20198

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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=47dd3543d36465496970406da03db5aecdc377ee

commit 47dd3543d36465496970406da03db5aecdc377ee
Author: Carlos O'Donell <carlos@redhat.com>
Date:   Mon Jun 6 14:20:58 2016 -0400

    Bug 20198: quick_exit should not call destructors.

    In C++11 18.5.12 says "Objects shall not be destroyed as a
    result of calling quick_exit." In C11 quick_exit is silent
    about thread object destruction. Therefore to make glibc
    C++ compliant we do not call any thread local destructors.
    A new regression test verifies the fix.

    I will note that C++11 18.5.3 makes it clear that C++
    defines additional requirements for _Exit() to prevent it
    from executing destructors.

    Given that the point of _Exit() is to terminate the process
    immediately it makes sense the C and C++ should line up
    and avoid calling destructors.

    No failures. New regtest passes.

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

Summary of changes:
 ChangeLog                                          |   54 ++++++++++++++++++++
 stdlib/Makefile                                    |   12 ++++-
 stdlib/Versions                                    |    3 +
 stdlib/exit.c                                      |    7 ++-
 stdlib/exit.h                                      |    5 +-
 stdlib/quick_exit.c                                |   23 ++++++++-
 elf/tst-pie2.c => stdlib/tst-quick_exit.cc         |   31 ++++++------
 .../tst-thread-quick_exit.cc                       |   43 ++++++++-------
 sysdeps/arm/nacl/libc.abilist                      |    1 +
 sysdeps/unix/sysv/linux/aarch64/libc.abilist       |    1 +
 sysdeps/unix/sysv/linux/alpha/libc.abilist         |    1 +
 sysdeps/unix/sysv/linux/arm/libc.abilist           |    1 +
 sysdeps/unix/sysv/linux/hppa/libc.abilist          |    1 +
 sysdeps/unix/sysv/linux/i386/libc.abilist          |    1 +
 sysdeps/unix/sysv/linux/ia64/libc.abilist          |    1 +
 sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist |    1 +
 sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist   |    1 +
 sysdeps/unix/sysv/linux/microblaze/libc.abilist    |    1 +
 .../unix/sysv/linux/mips/mips32/fpu/libc.abilist   |    1 +
 .../unix/sysv/linux/mips/mips32/nofpu/libc.abilist |    1 +
 .../unix/sysv/linux/mips/mips64/n32/libc.abilist   |    1 +
 .../unix/sysv/linux/mips/mips64/n64/libc.abilist   |    1 +
 sysdeps/unix/sysv/linux/nios2/libc.abilist         |    1 +
 .../sysv/linux/powerpc/powerpc32/fpu/libc.abilist  |    1 +
 .../linux/powerpc/powerpc32/nofpu/libc.abilist     |    1 +
 .../sysv/linux/powerpc/powerpc64/libc-le.abilist   |    1 +
 .../unix/sysv/linux/powerpc/powerpc64/libc.abilist |    1 +
 sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist  |    1 +
 sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist  |    1 +
 sysdeps/unix/sysv/linux/sh/libc.abilist            |    1 +
 sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist |    1 +
 sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist |    1 +
 .../sysv/linux/tile/tilegx/tilegx32/libc.abilist   |    1 +
 .../sysv/linux/tile/tilegx/tilegx64/libc.abilist   |    1 +
 sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist  |    1 +
 sysdeps/unix/sysv/linux/x86_64/64/libc.abilist     |    1 +
 sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist    |    1 +
 37 files changed, 163 insertions(+), 44 deletions(-)
 copy elf/tst-pie2.c => stdlib/tst-quick_exit.cc (67%)
 copy elf/tst-dl-iter-static.c => stdlib/tst-thread-quick_exit.cc (58%)

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