linuxthreads.old: Fix segfault when pthread_mutex_unlock() called against unlocked NORMAL mutex.

Althought, it is undefined behavior, there is no reason for segfault.

 Program received signal SIGSEGV, Segmentation fault.
 __pthread_unlock (lock=lock@entry=0x804b03c <lock+16>)
    at libpthread/linuxthreads.old/spinlock.c:231
 231                 (&lock->__status, oldstatus, (long)(thr->p_nextlock) & ~1L))

It occurs only on platforms which has HAS_COMPARE_AND_SWAP defined.

Restore glibc commit fbaf6e72d6 "spinlock.c (__pthread_unlock): Don't crash if
called for an untaken mutex." behavior, broken later by commit 4ad1d0cfbf.

Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>

0 files changed, 0 insertions, 0 deletions