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coccinelle: api: check for macro context

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A cast on a call to an allocation function that is the body of a macro can
be useful, as it ensures tha the macro is used for allocating objects of
the right type.  Add two new rules to ignore the macro case.

Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
This commit is contained in:
Julia Lawall 2026-08-02 21:20:51 +02:00
parent 5adb3698bb
commit b64acacd54
1 changed files with 21 additions and 2 deletions
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23
scripts/coccinelle/api/alloc/alloc_cast.cocci
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@ -20,6 +20,24 @@ virtual patch
virtual org
virtual report
@m1@
identifier i;
expression e;
type T;
position p1;
@@
#define i (T@p1 *)e
@m2@
identifier i;
expression e;
type T;
position p2;
@@
#define i(...) (T@p2 *)e
@initialize:python@
@@
import re
@ -28,9 +46,10 @@ m = re.compile(pattern)
@r1 depends on context || patch@
type T;
position p != {m1.p1,m2.p2};
@@
(T *)
(T@p *)
\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\|vmalloc\|vzalloc\|
dma_alloc_coherent\|devm_kmalloc\|devm_kzalloc\|
@ -90,7 +109,7 @@ type r1.T;
@r2 depends on org || report@
type T;
position p;
position p != {m1.p1,m2.p2};
@@
(T@p *)