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 11virtual org 12virtual report 13virtual context 14 15@r exists@ 16expression e,e1; 17constant c; 18position 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@ 28p1 << r.p1; 29p2 << r.p2; 30@@ 31 32cocci.print_main("PTR_ERR",p2) 33cocci.print_secs("assignment",p1) 34 35@script:python depends on report@ 36p1 << r.p1; 37p2 << r.p2; 38@@ 39 40msg = "ERROR: PTR_ERR applied after initialization to constant on line %s" % (p1[0].line) 41coccilib.report.print_report(p2[0],msg) 42