1570af302Sopenharmony_ci#define _GNU_SOURCE 2570af302Sopenharmony_ci#include <stdio.h> 3570af302Sopenharmony_ci 4570af302Sopenharmony_civoid setbuffer(FILE *f, char *buf, size_t size) 5570af302Sopenharmony_ci{ 6570af302Sopenharmony_ci setvbuf(f, buf, buf ? _IOFBF : _IONBF, size); 7570af302Sopenharmony_ci} 8