Stelian Pop <stel...@popies.net> writes: > I did spent a few hours looking but haven't had much luck. > > I tried tracing this one: >> > 6 long i = s.f-&s.b; > and noticed that the pointers gets casted to 'long' (so they become integers > and no longer pointers) before the actual substraction is made. > > Of course, replacing the 'long' with 'int' (on the incriminated targets, > where the real size of the pointer is 16 bit, the size of an 'int') makes > the code compile as a charm.
I took a quick look at a similar case for x86, and the key step seems to be a call to ptr_difference_const. It converts the difference of two ADDR_EXPRs to a constant. Ian
