On Tue, 21 Jan 2014, 林嘉(程二 福州) wrote:
> Sorry, I made a mistake , if the checkpoint is local variable, I should write
> as
>
> -int vp;
...
> -T I[C];
Also, you don't know if the array is declared before or after vp. So you
would need
(
- int vp;
...
- T I[C];
|
- T I[C];
...
- int vp;
)
julia
> -<+...
> -if(vp > C || ...){
>
> -----邮件原件-----
> 发件人: Julia Lawall [mailto:[email protected]]
> 发送时间: 2014年1月21日 11:35
> 收件人: 林嘉(程二 福州)
> 抄送: [email protected]
> 主题: Re: [Cocci] how to match this case?
>
>
>
> On Tue, 21 Jan 2014, 林嘉(程二 福州) wrote:
>
> > Following is a code with bug
> >
> > -----------------------------------
> > void set_timeout_value(int iParam)
> > {
> > int i;
> > byte b[100];
> > i = Geti();
> > if (i > 100 || i < 0){
> > return ;
> > }
> > b[i] = iParam; /* range of I is 0-100，so may overrun array* /
> >
> > }
> > -----------------------------------
> > Now I write a patch to find it, like this
> >
> > @@
> > identifier fn, vp;
> > identifier I;
> > type T;
> > expression C;
> > @@
> > -fn(...,int vp,...)
> > -{
> > -T I[C];
> > -<+...
> > -if(vp > C || ...){
> > -...
> > -}
> > -...+>
> > -}
> >
> >
> > But it doesn’t work, give me a log:
> > rule starting on line 1: position variables or mixed modifs interfere
> > with comm_assoc isobool (bool (int vp > int C) || ...)
>
> I will look into it, but you could try putting disable comm_assoc in between
> the initial @@, if you just want to see if your rule is working a little bit.
>
> julia
>
>
> >
> > can anyone tell why, thanks
> > _______________________________________________
> > Cocci mailing list
> > [email protected]
> > https://systeme.lip6.fr/mailman/listinfo/cocci
> >
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