projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 24f0c2d6 JL |
1 | /// Check for constants that are added but are used elsewhere as bitmasks |
| 2 | /// The results should be checked manually to ensure that the nonzero | |
| 3 | /// bits in the two constants are actually disjoint. | |
| 4 | /// | |
| 5 | // Confidence: Moderate | |
| 6 | // Copyright: (C) 2013 Julia Lawall, INRIA/LIP6. GPLv2. | |
| 7 | // Copyright: (C) 2013 Gilles Muller, INRIA/LIP6. GPLv2. | |
| 8 | // URL: http://coccinelle.lip6.fr/ | |
| 9 | // Comments: | |
| 93f14468 | 10 | // Options: --no-includes --include-headers |
| 24f0c2d6 JL |
11 | |
| 12 | virtual org | |
| 13 | virtual report | |
| 14 | virtual context | |
| 15 | ||
| 16 | @r@ | |
| 17 | constant c; | |
| 18 | identifier i; | |
| 19 | expression e; | |
| 20 | @@ | |
| 21 | ||
| 22 | ( | |
| 23 | e | c@i | |
| 24 | | | |
| 25 | e & c@i | |
| 26 | | | |
| 27 | e |= c@i | |
| 28 | | | |
| 29 | e &= c@i | |
| 30 | ) | |
| 31 | ||
| 32 | @s@ | |
| 33 | constant r.c,c1; | |
| 34 | identifier i1; | |
| 35 | position p; | |
| 36 | @@ | |
| 37 | ||
| 38 | ( | |
| 39 | c1 + c - 1 | |
| 40 | | | |
| 41 | *c1@i1 +@p c | |
| 42 | ) | |
| 43 | ||
| 44 | @script:python depends on org@ | |
| 45 | p << s.p; | |
| 46 | @@ | |
| 47 | ||
| 48 | cocci.print_main("sum of probable bitmasks, consider |",p) | |
| 49 | ||
| 50 | @script:python depends on report@ | |
| 51 | p << s.p; | |
| 52 | @@ | |
| 53 | ||
| 54 | msg = "WARNING: sum of probable bitmasks, consider |" | |
| 55 | coccilib.report.print_report(p[0],msg) |