Probably because at the machine code level, it's just a value placed
into a register. You get away with it because an object address is 32
bits wide and so is an integer, and both types are passed in the same
register.
G.
On 11 Jul 2008, at 1:55 am, an0 wrote:
But if different return types cause different native code, how could
my program still work with the mistaken type(an NSString * returned
from the inner message is treated as an NSInteger at the first place,
then is passed as an NSString * to the outer message) guessed by
compiler?
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