[Bug nptl/18479] libpthred.so is no longer properly runnable

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

https://sourceware.org/bugzilla/show_bug.cgi?id=18479

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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=78ad175b3060aae058ed5d05ced2bc58714901cd

commit 78ad175b3060aae058ed5d05ced2bc58714901cd
Author: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Date:   Tue Jun 2 21:04:06 2015 +0300

    nptl: restore .interp section in libpthread.so

    In commit 02657da2cf4457804ed938ee08b8316249126444, .interp section
    was removed from libpthread.so.  This led to an error:

      $ /lib64/libpthread.so.0
      Native POSIX Threads Library by Ulrich Drepper et al
      Copyright (C) 2015 Free Software Foundation, Inc.
      This is free software; see the source for copying conditions.
      There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
      PARTICULAR PURPOSE.
      Forced unwind support included.
      Segmentation fault

      (gdb) bt
      #0  0x00000000000055a6 in _exit@plt ()

    Unfortunately, there is no way to add a regression test for the bug
    because .interp specifies the path to dynamic linker of the target
    system.

    [BZ #18479]
    * nptl/pt-interp.c: New file.
    * nptl/Makefile (libpthread-routines, libpthread-shared-only-routines):
    Add pt-interp.
    [$(build-shared) = yes] ($(objpfx)pt-interp.os): Depend on
    $(common-objpfx)runtime-linker.h.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ac63a0783cdee8454c84fc45f37330d98b6039e7

commit ac63a0783cdee8454c84fc45f37330d98b6039e7
Author: Dmitry V. Levin <ldv@altlinux.org>
Date:   Fri Jun 5 22:20:13 2015 +0000

    Prepare for restoration of .interp section in libpthread.so

    Make runtime-linker.h available outside $(elf-objpfx) by moving
    the file to $(common-objpfx) and the rules for it to Makerules.

    Tested for x86_64 and x86 (testsuite, and that no compiled code
    changed by the patch).

    * Makeconfig (+interp): Remove unused variable.
    * elf/Makefile ($(objpfx)interp.os): Define for [$(build-shared) = yes]
    only.  Depend on $(common-objpfx)runtime-linker.h instead of
    $(elf-objpfx)runtime-linker.h.
    ($(elf-objpfx)runtime-linker.h): Rename to
    $(common-objpfx)runtime-linker.h and move ...
    * Makerules [$(build-shared) = yes]: ... here.
    * elf/interp.c: Include <runtime-linker.h> instead of
    <elf/runtime-linker.h>.

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

Summary of changes:
 ChangeLog        |   21 +++++++++++++++++++++
 Makeconfig       |    1 -
 Makerules        |   10 ++++++++++
 NEWS             |    2 +-
 elf/Makefile     |   12 +++---------
 elf/interp.c     |    2 +-
 nptl/Makefile    |    7 +++++--
 nptl/pt-interp.c |    1 +
 8 files changed, 42 insertions(+), 14 deletions(-)
 create mode 100644 nptl/pt-interp.c

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