64 lines
1.4 KiB
Plaintext
64 lines
1.4 KiB
Plaintext
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// SPDX-License-Identifier: GPL-2.0-only
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/// list_for_each_entry uses its first argument to get from one element of
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/// the list to the next, so it is usually not a good idea to reassign it.
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/// The first rule finds such a reassignment and the second rule checks
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/// that there is a path from the reassignment back to the top of the loop.
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///
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// Confidence: High
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// Copyright: (C) 2010 Nicolas Palix, DIKU.
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// Copyright: (C) 2010 Julia Lawall, DIKU.
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// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.
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// URL: https://coccinelle.gitlabpages.inria.fr/website
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// Comments:
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// Options: --no-includes --include-headers
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virtual context
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virtual org
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virtual report
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@r exists@
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iterator name list_for_each_entry;
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expression x,E;
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position p1,p2;
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@@
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list_for_each_entry@p1(x,...) { <... x =@p2 E ...> }
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@depends on context && !org && !report@
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expression x,E;
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position r.p1,r.p2;
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statement S;
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@@
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*x =@p2 E
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...
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list_for_each_entry@p1(x,...) S
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// ------------------------------------------------------------------------
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@back depends on (org || report) && !context exists@
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expression x,E;
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position r.p1,r.p2;
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statement S;
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@@
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x =@p2 E
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...
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list_for_each_entry@p1(x,...) S
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@script:python depends on back && org@
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p1 << r.p1;
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p2 << r.p2;
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@@
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cocci.print_main("iterator",p1)
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cocci.print_secs("update",p2)
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@script:python depends on back && report@
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p1 << r.p1;
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p2 << r.p2;
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@@
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msg = "iterator with update on line %s" % (p2[0].line)
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coccilib.report.print_report(p1[0],msg)
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