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Adhemerval Zanella c8e73a1492 stdlib: Fix qsort memory leak if callback throws (BZ 32058) 
If the input buffer exceeds the stack auxiliary buffer, qsort will
malloc a temporary one to call mergesort.  Since C++ standard does
allow the callback comparison function to throw [1], the glibc
implementation can potentially leak memory.

The fixes uses a pthread_cleanup_combined_push and
pthread_cleanup_combined_pop, so it can work with and without
exception enables.  The qsort code path that calls malloc now
requires some extra setup and a call to __pthread_cleanup_push
anmd __pthread_cleanup_pop (which should be ok since they just
setup some buffer state).

Checked on x86_64-linux-gnu.

[1] https://timsong-cpp.github.io/cppwp/n4950/alg.c.library#4

Reviewed-by: DJ Delorie <dj@redhat.com>
 		2025-04-02 18:01:55 +00:00
..
bits nptl: PTHREAD_COND_INITIALIZER compatibility with pre-2.41 versions (bug 32786) 2025-03-13 07:43:33 +01:00
sys Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
Implies
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Makeconfig Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
Makefile Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
Subdirs
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_Fork.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
aio_misc.h aio_suspend64: Fix clock discrepancy [BZ #32795] 2025-03-25 01:05:11 +01:00
cancellation-pc-check.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
dl-mutex.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
dl-thread_gscope_wait.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
dl-tls_init_tp.c nptl: clear the whole rseq area before registration 2025-02-21 22:21:25 +00:00
dl-tunables.list Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
fork.h nptl: Add support for setup guard pages with MADV_GUARD_INSTALL 2025-01-30 10:16:37 -03:00
futex-internal.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
gai_misc.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
internaltypes.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
jmp-unwind.c Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
libc-lock.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
libc-lockP.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
libc_start_call_main.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
lowlevellock-futex.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
lowlevellock.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
malloc-machine.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
proc_service.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
pthread-offsets.h nptl: update default pthread-offsets.h 2020-02-10 17:01:21 +01:00
pthread.h nptl: PTHREAD_COND_INITIALIZER compatibility with pre-2.41 versions (bug 32786) 2025-03-13 07:43:33 +01:00
pthreadP.h stdlib: Fix qsort memory leak if callback throws (BZ 32058) 2025-04-02 18:01:55 +00:00
pthread_atfork_compat.h Consolidate pthread_atfork 2021-06-24 10:04:41 -03:00
pthread_early_init.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
pthread_mutex_backoff.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
pthread_mutex_conf.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
rseq-access.h nptl: Introduce <rseq-access.h> for RSEQ_* accessors 2025-01-10 20:20:17 +00:00
setxid.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
stdio-lock.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tcb-access.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tcb-offsets.h
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thread_db.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
timer_routines.h Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
tst-mqueue8x.c
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