Ruby

rb_uint2big and rb_int2big are declared as such:

VALUE rb_uint2big(VALUE); VALUE rb_int2big(SIGNED_VALUE); 

and VALUE is one of

typedef uintptr_t VALUE; typedef unsigned long VALUE; typedef unsigned LONG_LONG VALUE; 

and SIGNED_VALUE similar but without unsigned.

Should the signatures actually be:

VALUE rb_uint2big(unsigned long); VALUE rb_int2big(long); 

Of course, there is not much difference here.
But it seems a bit strange to make this kind of conversion functions taking C integers depend on the bitwidth of VALUE.