On 2019-01-31 17:52:28 [+0100], Heiko Carstens wrote: > ...nevertheless Stefan and I looked through the lovely disassembly of > _pthread_mutex_lock_full() to verify if the compiler barriers are > actually doing what they are supposed to do. The generated code > however does look correct. > So, it must be something different. would it make sense to use one locking function instead all three (lock, try-lock, timed) in the test case to figure out if this is related to one of the locking function? Sebastian