Re: fix if's that are followed by semicolons

[Erik de Castro Lopo]

Mike McCormack wrote:
> Andreas Mohr wrote:
> > Could you perhaps create a first version of a shell script tools/find_gotchas ?
>
> I have other things to do at the moment, so go ahead if you're feeling 
> motivated.  I suspect you'll run into alot of false positives.  There 
> might be a compiler switch to turn on warnings for these things too (ie. 
> statements with no effect).

Gcc-4.0 catches this:

erikd@miles > cat test.c 
    int main (void)
    {
        if (0)  ;
        return 0 ;
    }
    erikd@miles > gcc-4.0 -W -Wall test.c -o /dev/null
    test.c: In function 'main':
    test.c:3: warning: empty body in an if-statement

Erik