ref: f2e04e5f2f85f9dda6d813a9a47a95995de1e5aa dir: /src/libc/stdio/putc.c/
#include <stdio.h> #undef putc int putc(int ch, FILE *fp) { return (fp->wp >= fp->rp) ? __putc(ch,fp) : (*fp->wp++ = ch); }