Takashi Yano via Cygwin writes:
> I found the cause. In pthread.h of cygwin, PTHREAD_ONCE_INIT is defined as:
> #define PTHREAD_ONCE_INIT { PTHREAD_MUTEX_INITIALIZER, 0 }
> however, libstdc++ initializes non-static pthread_once_t using this macro.https://www.ibm.com/docs/en/aix/7.3?topic=p-pthread-once-init-macro https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_once.html "The behavior of pthread_once() is undefined if once_control has automatic storage duration or is not initialized by PTHREAD_ONCE_INIT." > I cannot find the POSIX statement that only static pthread_once_t can be > initialized using PTHREAD_ONCE_INIT. If I do not overlook something, > this is the problem of cygwin side, isn't it? You can initialize just about anything with PTHREAD_ONCE_INIT, but you cannot expect the resulting structure to work as intended if there is more than instance per library / program, so the libstdc++ object should be a singleton, not automatic. Still looks like ATWIL to me… Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Factory and User Sound Singles for Waldorf Blofeld: http://Synth.Stromeko.net/Downloads.html#WaldorfSounds -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
