On Thu, 18 Jun 2020, Kees Cook wrote:
> On Thu, Jun 18, 2020 at 09:56:18PM +0200, Julia Lawall wrote:
> > @@
> > identifier i,fld;
> > expression e;
> > @@
> >
> > \(\(i\|e.fld\|e->fld\) \& E\)
> >
> > The e will match all of the variants you are concerned about.
>
> Ah, I see! Okay, that's
On Thu, Jun 18, 2020 at 09:56:18PM +0200, Julia Lawall wrote:
> @@
> identifier i,fld;
> expression e;
> @@
>
> \(\(i\|e.fld\|e->fld\) \& E\)
>
> The e will match all of the variants you are concerned about.
Ah, I see! Okay, that's good. And the "& E" part is to effectively
collect it into E
On Thu, 18 Jun 2020, Kees Cook wrote:
> On Wed, Jun 17, 2020 at 08:54:03PM +0200, Julia Lawall wrote:
> >
> >
> > On Wed, 17 Jun 2020, Kees Cook wrote:
> >
> > > On Mon, Jun 15, 2020 at 01:20:45PM +0300, Denis Efremov wrote:
> > > > +@as@
> > > > +expression E1, E2;
> > > > +@@
> > > > +
> > >
On Wed, Jun 17, 2020 at 08:54:03PM +0200, Julia Lawall wrote:
>
>
> On Wed, 17 Jun 2020, Kees Cook wrote:
>
> > On Mon, Jun 15, 2020 at 01:20:45PM +0300, Denis Efremov wrote:
> > > +@as@
> > > +expression E1, E2;
> > > +@@
> > > +
> > > +array_size(E1, E2)
> >
> > BTW, is there a way yet in
On Wed, 17 Jun 2020, Denis Efremov wrote:
>
>
> On 6/17/20 11:30 PM, Julia Lawall wrote:
> >
> >
> > On Mon, 15 Jun 2020, Denis Efremov wrote:
> >
> >> Detect an opencoded expression that is used before or after
> >> array_size()/array3_size()/struct_size() to compute the same size.
> >
> >
On 6/17/20 11:30 PM, Julia Lawall wrote:
>
>
> On Mon, 15 Jun 2020, Denis Efremov wrote:
>
>> Detect an opencoded expression that is used before or after
>> array_size()/array3_size()/struct_size() to compute the same size.
>
> This would benefit from the assignemnt operator metavariables
On Mon, 15 Jun 2020, Denis Efremov wrote:
> Detect an opencoded expression that is used before or after
> array_size()/array3_size()/struct_size() to compute the same size.
This would benefit from the assignemnt operator metavariables as well.
Also, it could be better to put the python rules
On Wed, 17 Jun 2020, Julia Lawall wrote:
>
>
> On Wed, 17 Jun 2020, Denis Efremov wrote:
>
> >
> > >
> > > Awesome! I'll take a look into this. :)
> > >
> > Here is another script for your #83 ticket.
> > Currently, it issues 598 warnings.
> >
> > // SPDX-License-Identifier: GPL-2.0-only
> >
On Wed, 17 Jun 2020, Denis Efremov wrote:
>
> >
> > Awesome! I'll take a look into this. :)
> >
> Here is another script for your #83 ticket.
> Currently, it issues 598 warnings.
>
> // SPDX-License-Identifier: GPL-2.0-only
> ///
> /// Check for missing overflow checks in allocation functions.
On Wed, 17 Jun 2020, Kees Cook wrote:
> On Mon, Jun 15, 2020 at 01:20:45PM +0300, Denis Efremov wrote:
> > +@as@
> > +expression E1, E2;
> > +@@
> > +
> > +array_size(E1, E2)
>
> BTW, is there a way yet in Coccinelle to match a fully qualified (?)
> identifier? For example, if I have two lines
On Mon, Jun 15, 2020 at 01:20:45PM +0300, Denis Efremov wrote:
> +@as@
> +expression E1, E2;
> +@@
> +
> +array_size(E1, E2)
BTW, is there a way yet in Coccinelle to match a fully qualified (?)
identifier? For example, if I have two lines in C:
A)
array_size(variable, 5);
B)
>
> Awesome! I'll take a look into this. :)
>
Here is another script for your #83 ticket.
Currently, it issues 598 warnings.
// SPDX-License-Identifier: GPL-2.0-only
///
/// Check for missing overflow checks in allocation functions.
/// Low confidence because it's pointless to check for
>
>
> Awesome! I'll take a look into this. :)
>
It would be helpful to get a feedback from you after.
What kind of warnings are helpful and what are not?
"duplicate calls" and "opencoded expression after array_size()" look doubtful
to me.
I think that maintainers will not like these patches.
On 6/15/20 13:35, Denis Efremov wrote:
>
>
> On 6/15/20 9:23 PM, Kees Cook wrote:
>> On Mon, Jun 15, 2020 at 01:20:45PM +0300, Denis Efremov wrote:
>>> Detect an opencoded expression that is used before or after
>>> array_size()/array3_size()/struct_size() to compute the same size.
>>>
>>>
On 6/15/20 9:23 PM, Kees Cook wrote:
> On Mon, Jun 15, 2020 at 01:20:45PM +0300, Denis Efremov wrote:
>> Detect an opencoded expression that is used before or after
>> array_size()/array3_size()/struct_size() to compute the same size.
>>
>> Cc: Kees Cook
>> Signed-off-by: Denis Efremov
>
>
On Mon, Jun 15, 2020 at 01:20:45PM +0300, Denis Efremov wrote:
> Detect an opencoded expression that is used before or after
> array_size()/array3_size()/struct_size() to compute the same size.
>
> Cc: Kees Cook
> Signed-off-by: Denis Efremov
Oh, very cool! How much does this find currently?
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