projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 7f904d7e | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 97c1cf8f JL |
2 | /// Find bit operations that include the same argument more than once |
| 3 | //# One source of false positives is when the argument performs a side | |
| 4 | //# effect. Another source of false positives is when a neutral value | |
| 5 | //# such as 0 for | is used to indicate no information, to maintain the | |
| 6 | //# same structure as other similar expressions | |
| 7 | /// | |
| 8 | // Confidence: Moderate | |
| 7f904d7e TG |
9 | // Copyright: (C) 2010 Nicolas Palix, DIKU. |
| 10 | // Copyright: (C) 2010 Julia Lawall, DIKU. | |
| 11 | // Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. | |
| 97c1cf8f JL |
12 | // URL: http://coccinelle.lip6.fr/ |
| 13 | // Comments: | |
| 93f14468 | 14 | // Options: --no-includes --include-headers |
| 97c1cf8f JL |
15 | |
| 16 | virtual context | |
| 17 | virtual org | |
| 18 | virtual report | |
| 19 | ||
| 20 | @r expression@ | |
| 21 | expression E; | |
| 22 | position p; | |
| 23 | @@ | |
| 24 | ||
| 25 | ( | |
| 26 | * E@p | |
| 27 | & ... & E | |
| 28 | | | |
| 29 | * E@p | |
| 30 | | ... | E | |
| 31 | | | |
| 32 | * E@p | |
| 33 | & ... & !E | |
| 34 | | | |
| 35 | * E@p | |
| 36 | | ... | !E | |
| 37 | | | |
| 38 | * !E@p | |
| 39 | & ... & E | |
| 40 | | | |
| 41 | * !E@p | |
| 42 | | ... | E | |
| 43 | ) | |
| 44 | ||
| 45 | @script:python depends on org@ | |
| 46 | p << r.p; | |
| 47 | @@ | |
| 48 | ||
| 49 | cocci.print_main("duplicated argument to & or |",p) | |
| 50 | ||
| 51 | @script:python depends on report@ | |
| 52 | p << r.p; | |
| 53 | @@ | |
| 54 | ||
| 55 | coccilib.report.print_report(p[0],"duplicated argument to & or |") |