[lwip-devel] [bug #31903] Calling lwip_shutdown() followed by lwip_close() causes a null pointer deference

[Kieran Mansley]

Update of bug #31903 (project lwip):

                 Summary: Calling lwip_close() twice causes a null pointer
deference => Calling lwip_shutdown() followed by lwip_close() causes a null
pointer deference

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Follow-up Comment #1:

Note that the problem here is not that lwip_close() being called twice causes
a null pointer dereference, it's that we map lwip_shutdown() to lwip_close().

It's not necessary for us to support calling lwip_close() twice.  It is
necessary for us to support calling lwip_shutdown() followed by lwip_close()

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