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- // SPDX-License-Identifier: GPL-2.0-only
- /// PTR_ERR should be applied before its argument is reassigned, typically
- /// to NULL
- ///
- // Confidence: High
- // Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.
- // Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.
- // URL: https://coccinelle.gitlabpages.inria.fr/website
- // Comments:
- // Options: --no-includes --include-headers
- virtual org
- virtual report
- virtual context
- @r exists@
- expression e,e1;
- constant c;
- position p1,p2;
- @@
- *e@p1 = c
- ... when != e = e1
- when != &e
- when != true IS_ERR(e)
- *PTR_ERR@p2(e)
- @script:python depends on org@
- p1 << r.p1;
- p2 << r.p2;
- @@
- cocci.print_main("PTR_ERR",p2)
- cocci.print_secs("assignment",p1)
- @script:python depends on report@
- p1 << r.p1;
- p2 << r.p2;
- @@
- msg = "ERROR: PTR_ERR applied after initialization to constant on line %s" % (p1[0].line)
- coccilib.report.print_report(p2[0],msg)
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