On Sat, 17 Apr 2021, David Laight wrote: > > > In patch 2, vscnprintf should probably be used to make sure it's > > > 0 terminated. > > > > Why? C99 has this[1]: > > > > "The vsnprintf function is equivalent to snprintf, with the variable > > argument list replaced by arg, which shall have been initialized by the > > va_start macro (and possibly subsequent va_arg calls)." > > vscnprintf() is normally the function you want (not vsnprintf()) > because the return value is the number of characters actually > put into the buffer, not the number that would have been written > had the buffer been long enough. Good catch, thank you! I'll respin the series then. Thank you for the background story too! Maciej
