[Bug malloc/6527] [powerpc] Malloc alignment insufficient for PowerPC

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https://sourceware.org/bugzilla/show_bug.cgi?id=6527

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=dea39b13e2958a7f0e75b5594a06d97d61cc439f

commit dea39b13e2958a7f0e75b5594a06d97d61cc439f
Author: Florian Weimer <fweimer@redhat.com>
Date:   Tue May 24 08:05:15 2016 +0200

    malloc: Correct malloc alignment on 32-bit architectures [BZ #6527]

    After the heap rewriting added in commit
    4cf6c72fd2a482e7499c29162349810029632c3f (malloc: Rewrite dumped heap
    for compatibility in __malloc_set_state), we can change malloc alignment
    for new allocations because the alignment of old allocations no longer
    matters.

    We need to increase the malloc state version number, so that binaries
    containing dumped heaps of the new layout will not try to run on
    previous versions of glibc, resulting in obscure crashes.

    This commit addresses a failure of tst-malloc-thread-fail on the
    affected architectures (32-bit ppc and mips) because the test checks
    pointer alignment.

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

Summary of changes:
 ChangeLog       |    7 +++++++
 malloc/hooks.c  |    2 +-
 malloc/malloc.c |   16 ++--------------
 3 files changed, 10 insertions(+), 15 deletions(-)

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