>> > You are right. But it does *not* return MAP_FAILED, it returns 0x60001000, > > which is a valid address. >> Ok, I figured out what's going wrong. A fix will be in the next > developers snapshot. >For all you who are interested: I was able to walk around this problem by using a disk file for each area and mmap that file with MAP_PRIVATE|MAP_FIXED, avoiding MAP_ANON. The disk file must be at least as long as requested in the following mmap call, though; But that can be done easily by creating, lseeking, writing and immediately unlinking it from within the program. Jan -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/