summaryrefslogtreecommitdiffstats
path: root/scripts/coccinelle/tests/doublebitand.cocci
blob: 0f0b94e7debd8946ca843c7f0469a956a0b63e35 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
// SPDX-License-Identifier: GPL-2.0-only
/// Find bit operations that include the same argument more than once
//# One source of false positives is when the argument performs a side
//# effect.  Another source of false positives is when a neutral value
//# such as 0 for | is used to indicate no information, to maintain the
//# same structure as other similar expressions
///
// Confidence: Moderate
// Copyright: (C) 2010 Nicolas Palix, DIKU.
// Copyright: (C) 2010 Julia Lawall, DIKU.
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: --no-includes --include-headers

virtual context
virtual org
virtual report

@r expression@
expression E;
position p;
@@

(
*        E@p
         & ... & E
|
*        E@p
         | ... | E
|
*        E@p
         & ... & !E
|
*        E@p
         | ... | !E
|
*        !E@p
         & ... & E
|
*        !E@p
         | ... | E
)

@script:python depends on org@
p << r.p;
@@

cocci.print_main("duplicated argument to & or |",p)

@script:python depends on report@
p << r.p;
@@

coccilib.report.print_report(p[0],"duplicated argument to & or |")