On 12/20/2011 11:24 PM, Julia Lawall wrote:
> For this one, I made quite a number of changes, some of which required
> fixing a bug in Coccinelle... I will try to release the bug fix
> shortly. In general, though, I have added ... between the two tests. I
> also got rid of the focus on ifs in the org and report rules.
>
Ok, thanks. Was the removing of the ifs in related to the Coccinelle bug? I
always get an error if I start a match with a conditional.
> julia
>
> virtual context
> virtual patch
> virtual org
> virtual report
>
> // Since the logical or operator by itself is not commutative we need
> rules for
> // both cases as well as for their De Morgan equivalents.
>
> @depends on context@
> expression x;
> @@
> * IS_ERR(x)
> || ... ||
> * x == NULL
>
> @depends on context@
> expression x;
> @@
> * x == NULL
> || ... ||
> * IS_ERR(x)
>
> @depends on context@
> expression x;
> @@
> * !IS_ERR(x)
> && ... &&
> * x != NULL
>
> @depends on context@
> expression x;
> @@
> * x != NULL
> && ... &&
> * !IS_ERR(x)
>
> @depends on patch@
> expression x;
> @@
> - IS_ERR(x)
> + IS_ERR_OR_NULL(x)
> || ...
> - || x == NULL
>
> @depends on patch@
> expression x;
> @@
> - x == NULL
> + IS_ERR_OR_NULL(x)
> || ...
> - || IS_ERR(x)
>
> @depends on patch@
> expression x;
> @@
> - !IS_ERR(x)
> + !IS_ERR_OR_NULL(x)
> && ...
> - && x != NULL
>
> @depends on patch@
> expression x;
> @@
> - x != NULL
> + !IS_ERR_OR_NULL(x)
> && ...
> - && !IS_ERR(x)
>
> @r depends on org || report@
> expression x;
> position p;
> @@
> (
> IS_ERR@p(x) || ... || x == NULL
> |
> x == NULL || ... || IS_ERR@p(x)
> |
> !IS_ERR@p(x) && ... && x != NULL
> |
> x != NULL && ... && !IS_ERR@p(x)
> )
>
> @script:python depends on org@
> p << r.p;
> x << r.x;
> @@
>
> msg="IS_ERR_OR_NULL can be used with %s" % (x)
> msg_safe=msg.replace("[","@(").replace("]",")")
> coccilib.org.print_todo(p[0], msg_safe)
>
> @script:python depends on report@
> p << r.p;
> x << r.x;
> @@
>
> msg="IS_ERR_OR_NULL can be used with %s" % (x)
> coccilib.report.print_report(p[0], msg)
_______________________________________________
Cocci mailing list
[email protected]
http://lists.diku.dk/mailman/listinfo/cocci
(Web access from inside DIKUs LAN only)
