Peter Bex scripsit: > Does this mean an unsigned char argument to a varags function is always > widened to "int"? How else can it know how much to take off the stack?
Yes, it does. This pattern is called "the integer promotions" in the C standards: _Bool, short, char, bitfield, and enum types are automatically promoted to int, or if int is too small, to unsigned int, whenever (a) they are used in an expression, or (b) passed as a function argument and there is no function prototype in scope (which there cannot be for varargs arguments). Basically, C does not deal with types narrower than int unless a function prototype forces it to. > And if it really is the case that characters are always widened to > integers, why bother to have a %c format specifier in the first place? The %c format specifier converts its input to a character and outputs that character. There is no other format specifier that does this. -- John Cowan http://www.ccil.org/~cowan co...@ccil.org Where the wombat has walked, it will inevitably walk again. (even through brick walls!) _______________________________________________ Chicken-hackers mailing list Chicken-hackers@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-hackers
