[PD] equality and void * pointers

[Jonathan Wilkes]

Hi list,
int compare_pointers(t_pd *foo){     long bar = generate_random_long();     return (((void *)foo) == ((void *)bar));}
(I probably have unnecessary parens there...)
Is the check for equality a case of undefined behavior?
If so, doesn't glob_findinstance of s_print.c also lead to the sameundefined behavior?
-Jonathan 
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