Function mi_vfprintf

3rd/mimalloc-2.0.9/src/options.c:345–352

Define our own limited `fprintf` that avoids memory allocation. We do this using `snprintf` with a limited buffer.

// Define our own limited `fprintf` that avoids memory allocation.
// We do this using `snprintf` with a limited buffer.
static void mi_vfprintf( mi_output_fun* out, void* arg, const char* prefix, const char* fmt, va_list args ) {
  char buf[512];
  if (fmt==NULL) return;
  if (!mi_recurse_enter()) return;
  vsnprintf(buf,sizeof(buf)-1,fmt,args);
  mi_recurse_exit();
  _mi_fputs(out,arg,prefix,buf);
}

void _mi_fprintf( mi_output_fun* out, void* arg, const char* fmt, ... ) {
  va_list args;