Re: RFC: booleans and the kernel

[Timothy Covell]

On Thursday 24 January 2002 16:59, Robert Love wrote:
> On Fri, 2002-01-25 at 17:47, Timothy Covell wrote:
> > > gcc already warns you about such errors.
> > >
> > > 	Xav
> >
> > That's funny, I compiled it with "gcc -Wall foo.c" and got no
> > warnings.    Please show me what I'm doing wrong and how
> > it's _my_ mistake and not the compilers.
>
> Hm, I recall seeing something like:
>
> warning: suggest parentheses around assignment used as truth value
>
> from gcc ... yep, I still do.
>
> 	Robert Love
>
My mistake, I was looking at the ouput of my "char x;" example,
which IMHO is even worse.

covell@xxxxxxx ~>cat foo.c

#include <stdio.h>

int main()
{
        char x;

        if ( x )
        {
                printf ("\n We got here\n");
        }
        else
        {
                // We never get here
                printf ("\n We never got here\n");
        }
        exit (0);
}
covell@xxxxxx ~>gcc -Wall foo.c
foo.c: In function `main':
foo.c:17: warning: implicit declaration of function `exit'

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