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[Bug malloc/22830] malloc_stats doesn't restore cancellation state on stderr
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Sat, 10 Feb 2018 21:26:58 +0000
- Subject: [Bug malloc/22830] malloc_stats doesn't restore cancellation state on stderr
- Auto-submitted: auto-generated
- References: <bug-22830-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=22830
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=402ecba487804e9196769f39a8d157847d3b3104
commit 402ecba487804e9196769f39a8d157847d3b3104
Author: Zack Weinberg <zackw@panix.com>
Date: Sat Feb 10 16:24:17 2018 -0500
[BZ #22830] malloc_stats: restore cancellation for stderr correctly.
malloc_stats means to disable cancellation for writes to stderr while
it runs, but it restores stderr->_flags2 with |= instead of =, so what
it actually does is disable cancellation on stderr permanently.
[BZ #22830]
* malloc/malloc.c (__malloc_stats): Restore stderr->_flags2
correctly.
* malloc/tst-malloc-stats-cancellation.c: New test case.
* malloc/Makefile: Add new test case.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 ++
malloc/Makefile | 2 +
malloc/malloc.c | 2 +-
malloc/tst-malloc-stats-cancellation.c | 216 ++++++++++++++++++++++++++++++++
4 files changed, 227 insertions(+), 1 deletions(-)
create mode 100644 malloc/tst-malloc-stats-cancellation.c
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