[lwip-devel] sys_mbox_new sys_sem_new : return NULL if no memory?

[Piero 74]

Hi all.

I wrote in  my sys_arch.c functions sys_mbox_new sys_sem_new.
these functions return NULL if rtos has finished his memory heap.

LWIP code check everywhere if handle is null after new operation? 
i'm not sure, but i saw in some points calls to other sys function without check of handle validity (different than NULL)

so... i have to verify in ALL function if handle parameter is NULL? and what have i do in this case?

i.e. call to sys_arch_sem_wait with invalid sem ???

Piero