| /// 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. GPLv2. |
| // Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2. |
| // Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2. |
| // 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 |") |