sprintf() warnings have gotten pretty sophisticated these days. I discovered GCC's -Wformat-overflow the other day. It complained that the buffer for a date s

sprintf() warnings have gotten pretty sophisticated these days. I discovered GCC's -Wformat-overflow the other day. It complained that the buffer for a date string wasn't big enough; e.g., sprintf(buf, "%04d-%02u-%02u", year, month, day), where year, month, and day are 16-bit shorts, and buf was probably eleven or twelve bytes. It may actually be a bug that I got the warning, because the range of each input was checked, and I think the compiler is supposed to be smart enough to remember that.