Re: Extend functionality of printf (Add colours)

[=?ISO-8859-1?Q?Tom=E1s_=D3_h=C9ilidhe?=]

On Nov 10, 12:08 pm, maverik <maverik.m...@g mail.comwrote:

So, no need to call va_arg(), just not to forgive va_end().

Sorry but I don't see how you can deduce that, I don't think that
excerpt clarifies whether the "va_arg" calls made inside vfprintf will
have an observable effect in my own function.

And if I don't need to call va_arg, then why's my program segfaulting?
Does anyone spot a bug?

[maverik]

Re: Extend functionality of printf (Add colours)

On Nov 10, 3:15 pm, Tomás Ó hÉilidhe <t...@lavabit.c omwrote:

On Nov 10, 12:08 pm, maverik <maverik.m...@g mail.comwrote:
>

So, no need to call va_arg(), just not to forgive va_end().

>
Sorry but I don't see how you can deduce that, I don't think that
excerpt clarifies whether the "va_arg" calls made inside vfprintf will
have an observable effect in my own function.
>
And if I don't need to call va_arg, then why's my program segfaulting?
Does anyone spot a bug?

Sorry, I miss tne note (from the same document):

As the functions vfprintf, vfscanf, vprintf, vscanf, vsnprintf, vspri
vsscanf invoke the va_arg macro, the value of arg after the return is
indeterminate.