xref: /linux/scripts/coccinelle/misc/noderef.cocci (revision 26b0d14106954ae46d2f4f7eec3481828a210f7d)
1/// sizeof when applied to a pointer typed expression gives the size of
2/// the pointer
3///
4// Confidence: High
5// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.  GPLv2.
6// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.  GPLv2.
7// URL: http://coccinelle.lip6.fr/
8// Comments:
9// Options: -no_includes -include_headers
10
11virtual org
12virtual report
13virtual context
14virtual patch
15
16@depends on patch@
17expression *x;
18expression f;
19type T;
20@@
21
22(
23x = <+... sizeof(
24- x
25+ *x
26   ) ...+>
27|
28f(...,(T)(x),...,sizeof(
29- x
30+ *x
31   ),...)
32|
33f(...,sizeof(x),...,(T)(
34- x
35+ *x
36   ),...)
37)
38
39@r depends on !patch@
40expression *x;
41expression f;
42position p;
43type T;
44@@
45
46(
47*x = <+... sizeof@p(x) ...+>
48|
49*f(...,(T)(x),...,sizeof@p(x),...)
50|
51*f(...,sizeof@p(x),...,(T)(x),...)
52)
53
54@script:python depends on org@
55p << r.p;
56@@
57
58cocci.print_main("application of sizeof to pointer",p)
59
60@script:python depends on report@
61p << r.p;
62@@
63
64msg = "ERROR: application of sizeof to pointer"
65coccilib.report.print_report(p[0],msg)
66