xref: /OK3568_Linux_fs/kernel/scripts/coccinelle/misc/excluded_middle.cocci (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun// SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun///
3*4882a593Smuzhiyun/// Condition !A || A && B is equivalent to !A || B.
4*4882a593Smuzhiyun///
5*4882a593Smuzhiyun// Confidence: High
6*4882a593Smuzhiyun// Copyright: (C) 2020 Denis Efremov ISPRAS
7*4882a593Smuzhiyun// Options: --no-includes --include-headers
8*4882a593Smuzhiyun
9*4882a593Smuzhiyunvirtual patch
10*4882a593Smuzhiyunvirtual context
11*4882a593Smuzhiyunvirtual org
12*4882a593Smuzhiyunvirtual report
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun@r depends on !patch@
15*4882a593Smuzhiyunexpression A, B;
16*4882a593Smuzhiyunposition p;
17*4882a593Smuzhiyun@@
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun* !A || (A &&@p B)
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun@depends on patch@
22*4882a593Smuzhiyunexpression A, B;
23*4882a593Smuzhiyun@@
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun  !A ||
26*4882a593Smuzhiyun-       (A && B)
27*4882a593Smuzhiyun+       B
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun@script:python depends on report@
30*4882a593Smuzhiyunp << r.p;
31*4882a593Smuzhiyun@@
32*4882a593Smuzhiyun
33*4882a593Smuzhiyuncoccilib.report.print_report(p[0], "WARNING !A || A && B is equivalent to !A || B")
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun@script:python depends on org@
36*4882a593Smuzhiyunp << r.p;
37*4882a593Smuzhiyun@@
38*4882a593Smuzhiyun
39*4882a593Smuzhiyuncoccilib.org.print_todo(p[0], "WARNING !A || A && B is equivalent to !A || B")
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