Steffen Daode Nurpmeso <sdao...@googlemail.com> added the comment: @Nadeem: note that the committed versions of the tests would not show up the Mac OS X mmap() bug AFAIK, because there is an intermediate .close() of the file to be mmapped. The OS X bug is that the VMS/VFS interaction fails to provide a valid memory region for <<pages which are not yet physically present on disc>> - i.e. there is no true sparse file support as on Linux, which simply uses references to a single COW zero page. (I've not tried it out for real yet, but i'm foolish like a prowd cock, so i've looked at the changeset :)
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