pthread_cond_timedwait() hangs when I change system time to past

[praveen j]

Hi,

  I am working with glibc-2.11 for x86_64 and my kernel version is 2.6.32.

  My application which uses pthread_cond_timedwait() was working fine
with glibc-2.5.90,  but hangs with glibc-2.11 when I change the system
time to the past.

  I read about differences in FUTEX_WAIT and FUTEX_WAIT_BITSET, is
this making any difference?

Regards,
Praveen Kumar J