[XFree86] X server startup removes shared memory partitions

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I am running version 4.3.0 of XFree86 and I have a problem with
the Xserver removing shared memory partitions that belong to other
processes when it starts.

Apparently when I originally wrote my code which uses shared
memory I unwisely choose to use shared memory keys in the
range 1 - 200.

I notice that the Xserver seems to create shm partitions with
key values of 0 and 2 and most likely other values that I haven't
yet gleaned.

If I change the key value to some rather large number my problem
goes away,  i.e. my partition is not marked for deletion by the
server.

My question is: what ranges of shared memory key values are
being used by the Xserver and friends ?  I would like to change
my code to avoid the problem now and in the future.





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