| /// Find &&/|| operations that include the same argument more than once |
| //# A common source of false positives is when the expression, or |
| //# another expresssion in the same && or || operation, performs a |
| //# side effect. |
| /// |
| // 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 |
| ) |
| |
| @bad@ |
| expression r.E,e1,e2,fn; |
| position r.p; |
| assignment operator op; |
| @@ |
| |
| ( |
| E@p |
| & |
| <+... \(fn(...)\|e1 op e2\|e1++\|e1--\|++e1\|--e1\) ...+> |
| ) |
| |
| @depends on context && !bad@ |
| expression r.E; |
| position r.p; |
| @@ |
| |
| *E@p |
| |
| @script:python depends on org && !bad@ |
| p << r.p; |
| @@ |
| |
| cocci.print_main("duplicated argument to && or ||",p) |
| |
| @script:python depends on report && !bad@ |
| p << r.p; |
| @@ |
| |
| coccilib.report.print_report(p[0],"duplicated argument to && or ||") |