Re: gcc varargs problem

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whoosh writes:

On 01-Aug-08 03:00:09 Tom Horsley wrote:
On Fri, 01 Aug 2008 02:36:54 +0100
whoosh <whoosh777@xxxxxxxxxxxxxxxx> wrote:

64 bit Fedora 9's gcc regards this as an error, all the other gcc's eg on 32 bit Fedora Core 3 have no problem with this.

The standard regards it as an error as well, and if you looked up
the insane argument passing conventions for x86_64, you'd know why :-).
If you want to write portable code, look at the stdarg man page and
use the va_start, va_copy, etc. macros.


ok, from that man page it looks like the way to do it is:

f( va_list *pargs )

No, that's not what that man page states. See the EXAMPLE section.

is there a way to switch off the signedness errors, where
I use "unsigned char *" for strings to prevent char 255 being

sign extended to EOF?

Use explicit casts.


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