Var Args are funky

When I did a return from va_arg(args, void *), it always seems to return null even though there are more arguments remaining. In this case, the arg list is filled with vars that need to be free'd prior to exiting the program. Anyone know why such an unsightly approach is needed?

int cp_error(const char *msg, int varc, ...) {
    int varg = 0;
    va_list args;

    if (varc > 0) {
        varg = 1;
        va_start(args, msg);
    }

    while (--varc >= 0) {
        va_arg(args, void *);
        free( (void *) *((char **) args) );
    }

    if (varg) {
        va_end(args);
    }

    fprintf(stdout, "%s\n", msg);

    return 0;
}

#include <stdarg.h> // AIDS!

I already did.

Do you have anything else enlightening to say?

>>3
If you already got AIDS, then that's all you have to do. You'll soon be dead and not writing such horrible code.

Varargs are ugly, just design the program so you won't need them.

If the code is 'horrible', why don't you suggest an alternative? Let's not forget this is a microsoft compiler and i've seen the stdarg.h file before and it is definitely not the same here!

>>5
I use them because they are convenient.

OTHERWISE, every time a program gets in an error and a bunch of things have to be free'd as a result, the if-elseing becomes a nightmare. Would you like examples?

There's a bunch of AIDS in this code. First, you need to call va_start() and va_end() regardless of whether actual arguments are present or not. Second, va_arg() _returns_ a value and _alters_ the va_list parameter.

So what you want to do is remove varg, both of the if blocks (leave va_start() and va_end()) and instead call free(va_arg(args, void *)) in the loop.

Enough asswiping for you? RTFM the next time around, shithead.

>>8
Maybe you have trouble to read, but I tried the approach you mentioned and it failed because you are WRONG.

And yes, I've read many manuals, including K&R. So please do us a favor and stick to the topic answering the question about why this is necessary in a microsoft compiler or STFU if you don't know.

microsoft compiler
Thread over.

>>9
Dude, if the way I just explained it fails for you then your environment is made of suck, fail and standard noncompliance. Seriously. There's never any time that you access or even get the address of a va_list unless it's using va_start/va_end/va_arg/va_copy.

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>>12
Death to spambots.

>>9
Well, I've tested it over and over and it only frees things correctly when I use the code I put up top. If I do it your way, it crashes.

>>14
Perhaps you're interpreting "my way" wrong. I'd post correct code, but I again have no clue how to use world4ch's code tags.

>>15

[‭code] [/code]

>>16
HOW THE FUCK DID YOU DO THAT?

[LEFT-TO-RIGHT OVERRIDE code] [/code]

Right. So here's some correct varargs code for mr. Dummy.


#include <stdarg.h>
#include <stdlib.h>

void shitting_dicknipples(const char *msg, int count, ...)
{
    va_list al;
    va_start(al, count);
    for(int i=0; i<count; i++) free(va_arg(al, void *));
    va_end(al);
    printf("%s\n", msg);
}

hey mr.smarty can you answer my question in "encryption and decryption" thread?

Cock. Forgot an #include <stdio.h>, there, for printf().

VALID PERL CODE

Lain.

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