On 17 February 2011 13:09, Axel Freyn wrote: >> >> I'm guessing you didn't bother to actually compile that and test it? > Well, I did. But using gcc instead of g++. I get values <128 as soon as > I add the integer conversion (in C code). Jason's original code used char i(1) which is not valid C ;-) In any case, I get the same behaviour in C as C++, the cast to int makes no difference. Did you use optimization? >> See 5.2.2 [expr.call] paragraph 7 in the C++ standard. Arguments to >> varargs functions are subject to integral promotions. > In C++ it does not make any difference. C has the same rules for default argument promotions, see 6.5.2.2 paragraph 6
