Re: -fstrict-aliasing, -Wstrict-aliasing=2, and indirect conversions

[Harald van DÄk <truedfx at gentoo dot org>]

Ian Lance Taylor wrote:
> There should be a warning here.  The warning code is confused by the
> double cast.  If you cast directly to short *, you should get the
> warning.
>
> I'm going to test this patch to fix this problem.  Anybody see
> anything wrong with it?

Hi,

Thank you for your quick reply. Your patch has been very helpful. It 
doesn't seem to catch these similar cases, though:

int main() {
    int a = 1;

    void *p1 = (void *) &a;
    * (short *) p1 = 2;

    char *p2 = (char *) &a;
    * (short *) p2 = 3;

    return a;
}

This still returns 1 without a warning. (I am now using 4.1.0-20050723, 
so that I could try your patch.)