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linux-headers-5.4.0-212
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coccinelle
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Filename :
boolinit.cocci
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// SPDX-License-Identifier: GPL-2.0-only /// Bool initializations should use true and false. Bool tests don't need /// comparisons. Based on contributions from Joe Perches, Rusty Russell /// and Bruce W Allan. /// // Confidence: High // Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. // Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. // URL: http://coccinelle.lip6.fr/ // Options: --include-headers virtual patch virtual context virtual org virtual report @boolok@ symbol true,false; @@ ( true | false ) @depends on patch@ bool t; @@ ( - t == true + t | - true == t + t | - t != true + !t | - true != t + !t | - t == false + !t | - false == t + !t | - t != false + t | - false != t + t ) @depends on patch disable is_zero, isnt_zero@ bool t; @@ ( - t == 1 + t | - t != 1 + !t | - t == 0 + !t | - t != 0 + t ) @depends on patch && boolok@ bool b; @@ ( b = - 0 + false | b = - 1 + true ) // --------------------------------------------------------------------- @r1 depends on !patch@ bool t; position p; @@ ( * t@p == true | * true == t@p | * t@p != true | * true != t@p | * t@p == false | * false == t@p | * t@p != false | * false != t@p ) @r2 depends on !patch disable is_zero, isnt_zero@ bool t; position p; @@ ( * t@p == 1 | * t@p != 1 | * t@p == 0 | * t@p != 0 ) @r3 depends on !patch && boolok@ bool b; position p1; @@ ( *b@p1 = 0 | *b@p1 = 1 ) @r4 depends on !patch@ bool b; position p2; identifier i; constant c != {0,1}; @@ ( b = i | *b@p2 = c ) @script:python depends on org@ p << r1.p; @@ cocci.print_main("WARNING: Comparison to bool",p) @script:python depends on org@ p << r2.p; @@ cocci.print_main("WARNING: Comparison of 0/1 to bool variable",p) @script:python depends on org@ p1 << r3.p1; @@ cocci.print_main("WARNING: Assignment of 0/1 to bool variable",p1) @script:python depends on org@ p2 << r4.p2; @@ cocci.print_main("ERROR: Assignment of non-0/1 constant to bool variable",p2) @script:python depends on report@ p << r1.p; @@ coccilib.report.print_report(p[0],"WARNING: Comparison to bool") @script:python depends on report@ p << r2.p; @@ coccilib.report.print_report(p[0],"WARNING: Comparison of 0/1 to bool variable") @script:python depends on report@ p1 << r3.p1; @@ coccilib.report.print_report(p1[0],"WARNING: Assignment of 0/1 to bool variable") @script:python depends on report@ p2 << r4.p2; @@ coccilib.report.print_report(p2[0],"ERROR: Assignment of non-0/1 constant to bool variable")