Re: [9fans] stdio.h va_list declarations

Re: [9fans] stdio.h va_list declarations

[Skip Tavakkolian]

> You probably want to compile with pcc rather than 8c.

The supplied mkfile for the version that was ported
to Plan9 (0.9.2) is set up to use 8c.

Re: [9fans] stdio.h va_list declarations

[Russ Cox]

> Thanks.  I am trying to compile Kaffe, which presumably compiled
> correctly under 3/ed.  Things have moved around a bit or it is my
> configuration.

You probably want to compile with pcc rather than 8c.

Russ

Re: [9fans] stdio.h va_list declarations

[Charles Forsyth]

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vfprintf etc don't take variable argument lists, but have one
parameter of type va_list that points to a variable argument list.  since you're
outside the APE environment (or it would be using /sys/include/ape/stdio.h)
you need to include <u.h> before <stdio.h>, as for nearly any
other Plan 9 include file (despite the comment to the contrary in
intro(2)).  in practice, you'll typically also need <libc.h> for any real program
(eg, to declare exits).

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From: "Skip Tavakkolian" <fst@centurytel.net>
To: 9fans@cse.psu.edu
Subject: [9fans] stdio.h va_list declarations
Date: Wed, 9 Oct 2002 08:08:17 -0400
Message-ID: <16d2a7daabbaf56b66e19efb07d17c32@centurytel.net>

I get:

/sys/include/stdio.h:79[temp.cp:405] mixed ansi/old function declaration: vfprintf
/sys/include/stdio.h:80[temp.cp:406] mixed ansi/old function declaration: vprintf
/sys/include/stdio.h:81[temp.cp:407] mixed ansi/old function declaration: vsprintf
/sys/include/stdio.h:82[temp.cp:408] mixed ansi/old function declaration: vsnprintf
/sys/include/stdio.h:83[temp.cp:409] mixed ansi/old function declaration: vfscanf

it is complaining about the use of va_list instead of '...' in the
prototype declaration.

Re: [9fans] stdio.h va_list declarations

[Russ Cox]

No it's not.  It's complaining that it has
no idea what a va_list is, so it thinks it's
a variable name.  Did you include u.h?

(Va_list and ... mean different things;
compare printf and vprintf.)

Russ

Re: [9fans] stdio.h va_list declarations

[Skip Tavakkolian]

> since you're
> outside the APE environment (or it would be using /sys/include/ape/stdio.h)
> you need to include <u.h> before <stdio.h>, as for nearly any
> other Plan 9 include file (despite the comment to the contrary in
> intro(2)).

Good point. In this case though, APE wasn't used to port Kaffe.

Re: [9fans] stdio.h va_list declarations

[Skip Tavakkolian]

> No it's not.  It's complaining that it has
> no idea what a va_list is, so it thinks it's
> a variable name.  Did you include u.h?

Thanks.  I am trying to compile Kaffe, which presumably compiled
correctly under 3/ed.  Things have moved around a bit or it is my
configuration.

>
> (Va_list and ... mean different things;
> compare printf and vprintf.)

I knew that ☺
Thanks. I was too focused on keeping the compiler happy and '...' is
inclusive of va_list (or whatever type). It is a bad habit.

[9fans] stdio.h va_list declarations

[Skip Tavakkolian]

I get:

/sys/include/stdio.h:79[temp.cp:405] mixed ansi/old function declaration: vfprintf
/sys/include/stdio.h:80[temp.cp:406] mixed ansi/old function declaration: vprintf
/sys/include/stdio.h:81[temp.cp:407] mixed ansi/old function declaration: vsprintf
/sys/include/stdio.h:82[temp.cp:408] mixed ansi/old function declaration: vsnprintf
/sys/include/stdio.h:83[temp.cp:409] mixed ansi/old function declaration: vfscanf

it is complaining about the use of va_list instead of '...' in the
prototype declaration.