Re: [PATCH] HID: roccat: Drop cast

From: Joe Perches
Date: Fri Jun 27 2014 - 01:52:54 EST


On Fri, 2014-06-27 at 07:29 +0200, Julia Lawall wrote:
> On Thu, 26 Jun 2014, Joe Perches wrote:
> > The cast of a const void * to a void * was odd.
> >
> > Maybe a mechanism to verify appropriateness of
> > loss of constness for any pointer might be useful.
>
> I tried the following, but didn't find anything interesting:
>
> @disable drop_cast@
> type T;
> const T e;
> @@
>
> * (T)e

What code does this match?
Do you have an example match?

This doesn't find a cast of a void type like:

void func(const void * const p)
{
char *p2 = p;

p2[0] = 1;
}


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