I assume this is not expected but doesn't need to be dealt with urgently, just noting for discussion/follow-up later: the 1.8.x branch has still has the pre-1.7.1(?) decision logic.
1.7.x and trunk have: decision on anonymous shared memory allocation method... 4.4BSD-style mmap() via MAP_ANON decision on namebased memory allocation method... mmap() via POSIX.1 shm_open() on temporary file 1.8.x has: decision on anonymous shared memory allocation method... 4.4BSD-style mmap() via MAP_ANON decision on namebased memory allocation method... SysV IPC shmget()
