Re: [PATCH,Hurd] Fix deallocation after proc_getprocinfo call

[Samuel Thibault]

Joel Brobecker, le Sun 23 Nov 2014 11:44:52 +0400, a écrit :
> > -      vm_deallocate (mach_task_self (), (vm_address_t) pi, pi_len);
> > +      vm_deallocate (mach_task_self (), (vm_address_t) pi, pi_len * sizeof 
> > (*(procinfo_t) 0));
> 
> Suggest using "sizeof (struct procinfo)", which I think is better
> than dereferencing a NULL pointer. This is based on guessing that
> type procinfo_t is a pointer to struct procinfo, as suggested by
> the code in inf_validate_procinfo.

Not, that is not the same: struct procinfo has an open array at its end
(threadinfos[0]), and thus the actually allocated size is variable.

Samuel