projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 4a05f067 JL |
1 | /// PTR_ERR should be applied before its argument is reassigned, typically |
| 2 | /// to NULL | |
| 3 | /// | |
| 4 | // Confidence: High | |
| 5 | // Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2. | |
| 6 | // Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2. | |
| 7 | // URL: http://coccinelle.lip6.fr/ | |
| 8 | // Comments: | |
| 9 | // Options: -no_includes -include_headers | |
| 10 | ||
| 11 | virtual org | |
| 12 | virtual report | |
| 13 | virtual context | |
| 14 | ||
| 15 | @r exists@ | |
| 16 | expression e,e1; | |
| 17 | constant c; | |
| 18 | position p1,p2; | |
| 19 | @@ | |
| 20 | ||
| 21 | *e@p1 = c | |
| 22 | ... when != e = e1 | |
| 23 | when != &e | |
| 24 | when != true IS_ERR(e) | |
| 25 | *PTR_ERR@p2(e) | |
| 26 | ||
| 27 | @script:python depends on org@ | |
| 28 | p1 << r.p1; | |
| 29 | p2 << r.p2; | |
| 30 | @@ | |
| 31 | ||
| 32 | cocci.print_main("PTR_ERR",p2) | |
| 33 | cocci.print_secs("assignment",p1) | |
| 34 | ||
| 35 | @script:python depends on report@ | |
| 36 | p1 << r.p1; | |
| 37 | p2 << r.p2; | |
| 38 | @@ | |
| 39 | ||
| 40 | msg = "ERROR: PTR_ERR applied after initialization to constant on line %s" % (p1[0].line) | |
| 41 | coccilib.report.print_report(p2[0],msg) |