[Bug malloc/23907] Incorrect double-free malloc tcache check disregards tcache size

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=23907

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ea16a6938d7ca5f4c2b67c11251c70b30796602a

commit ea16a6938d7ca5f4c2b67c11251c70b30796602a
Author: DJ Delorie <dj@redhat.com>
Date:   Fri Nov 30 22:13:09 2018 -0500

    malloc: Add another test for tcache double free check.

    This one tests for BZ#23907 where the double free
    test didn't check the tcache bin bounds before dereferencing
    the bin.

    [BZ #23907]
    * malloc/tst-tcfree3.c: New.
    * malloc/Makefile: Add it.

    (cherry picked from commit 7c9a7c68363051cfc5fa1ebb96b3b2c1f82dcb76)

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

Summary of changes:
 ChangeLog            |    6 +++++
 malloc/Makefile      |    2 +-
 malloc/tst-tcfree3.c |   56 ++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+), 1 deletions(-)
 create mode 100644 malloc/tst-tcfree3.c

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