| /// Check for constants that are added but are used elsewhere as bitmasks |
| /// The results should be checked manually to ensure that the nonzero |
| /// bits in the two constants are actually disjoint. |
| /// |
| // Confidence: Moderate |
| // Copyright: (C) 2013 Julia Lawall, INRIA/LIP6. GPLv2. |
| // Copyright: (C) 2013 Gilles Muller, INRIA/LIP6. GPLv2. |
| // URL: http://coccinelle.lip6.fr/ |
| // Comments: |
| // Options: --no-includes --include-headers |
| |
| virtual org |
| virtual report |
| virtual context |
| |
| @r@ |
| constant c,c1; |
| identifier i,i1; |
| position p; |
| @@ |
| |
| ( |
| c1 + c - 1 |
| | |
| c1@i1 +@p c@i |
| ) |
| |
| @s@ |
| constant r.c, r.c1; |
| identifier i; |
| expression e; |
| @@ |
| |
| ( |
| e | c@i |
| | |
| e & c@i |
| | |
| e |= c@i |
| | |
| e &= c@i |
| | |
| e | c1@i |
| | |
| e & c1@i |
| | |
| e |= c1@i |
| | |
| e &= c1@i |
| ) |
| |
| @depends on s@ |
| position r.p; |
| constant c1,c2; |
| @@ |
| |
| * c1 +@p c2 |
| |
| @script:python depends on s && org@ |
| p << r.p; |
| @@ |
| |
| cocci.print_main("sum of probable bitmasks, consider |",p) |
| |
| @script:python depends on s && report@ |
| p << r.p; |
| @@ |
| |
| msg = "WARNING: sum of probable bitmasks, consider |" |
| coccilib.report.print_report(p[0],msg) |
