On Jul 21 14:19, D. Boland wrote: > Hi Corinna, > > Corinna Vinschen wrote: > > > > [Now with correct subject, sorry] > > > > Hi Cygwin friends and users, > > > > I just released Cygwin 1.7.31-1. This is mostely a bugfix release. > > > > $ uname -a > CYGWIN_NT-5.1 dimension 1.7.31s(0.272/5/3) 20140716 11:15:29 i686 Cygwin > > With the snapshot in place, the ftp client hangs indefinitely after entering > the > password. Switching back to my old Cygwin DLL, it works again.
I could easily reproduce it. The cause is our switch from defaulting to PTHREAD_MUTEX_ERRORCHECK to PTHREAD_MUTEX_NORMAL to align the behaviour more closely to Linux. The problem is a mutex which is part of every (p)thread. This mutex is set to PTHREAD_MUTEX_RECURSIVE for all threads... except for the main thread. This is actually a long-standing bug. By defaulting to PTHREAD_MUTEX_ERRORCHECK the bug was just not visible. Only by switching to PTHREAD_MUTEX_NORMAL as default it became apparent, so I'm rather glad this has been catched now. This could have subtil side-effects in multi-threaded applications. I'm going to release a fixed 1.7.31-2 in a few minutes. Thanks for the report, Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
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