1// SPDX-License-Identifier: GPL-2.0-only 2/// Device node iterators put the previous value of the index variable, so an 3/// explicit put causes a double put. 4/// 5// Confidence: High 6// Copyright: (C) 2015 Julia Lawall, Inria. 7// URL: http://coccinelle.lip6.fr/ 8// Options: --no-includes --include-headers 9// Requires: 1.0.4 10// Keywords: for_each_child_of_node, etc. 11 12// This uses a conjunction, which requires at least coccinelle >= 1.0.4 13 14virtual patch 15virtual context 16virtual org 17virtual report 18 19@r exists@ 20expression e1,e2; 21local idexpression n; 22iterator name for_each_node_by_name, for_each_node_by_type, 23for_each_compatible_node, for_each_matching_node, 24for_each_matching_node_and_match, for_each_child_of_node, 25for_each_available_child_of_node, for_each_node_with_property; 26iterator i; 27position p1,p2; 28statement S; 29@@ 30 31( 32( 33for_each_node_by_name(n,e1) S 34| 35for_each_node_by_type(n,e1) S 36| 37for_each_compatible_node(n,e1,e2) S 38| 39for_each_matching_node(n,e1) S 40| 41for_each_matching_node_and_match(n,e1,e2) S 42| 43for_each_child_of_node(e1,n) S 44| 45for_each_available_child_of_node(e1,n) S 46| 47for_each_node_with_property(n,e1) S 48) 49& 50i@p1(...) { 51 ... when != of_node_get(n) 52 when any 53 of_node_put@p2(n); 54 ... when any 55} 56) 57 58@s exists@ 59local idexpression r.n; 60statement S; 61position r.p1,r.p2; 62iterator i; 63@@ 64 65 of_node_put@p2(n); 66 ... when any 67 i@p1(..., n, ...) 68 S 69 70@t depends on s && patch && !context && !org && !report@ 71local idexpression n; 72position r.p2; 73@@ 74 75- of_node_put@p2(n); 76 77// ---------------------------------------------------------------------------- 78 79@t_context depends on s && !patch && (context || org || report)@ 80local idexpression n; 81position r.p2; 82position j0; 83@@ 84 85* of_node_put@j0@p2(n); 86 87// ---------------------------------------------------------------------------- 88 89@script:python t_org depends on org@ 90j0 << t_context.j0; 91@@ 92 93msg = "ERROR: probable double put." 94coccilib.org.print_todo(j0[0], msg) 95 96// ---------------------------------------------------------------------------- 97 98@script:python t_report depends on report@ 99j0 << t_context.j0; 100@@ 101 102msg = "ERROR: probable double put." 103coccilib.report.print_report(j0[0], msg) 104 105