ref: c1b4b8354a76cc8c9aa13757e8b3db8d1b5a7c39 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); }