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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | // SPDX-License-Identifier: GPL-2.0-only /// /// Check for opencoded swap() implementation. /// // Confidence: High // Copyright: (C) 2021 Denis Efremov ISPRAS // Options: --no-includes --include-headers // // Keywords: swap // virtual patch virtual org virtual report virtual context @rvar depends on !patch@ identifier tmp; expression a, b; type T; position p; @@ ( * T tmp; | * T tmp = 0; | * T *tmp = NULL; ) ... when != tmp * tmp = a; * a = b;@p * b = tmp; ... when != tmp @r depends on !patch@ identifier tmp; expression a, b; position p != rvar.p; @@ * tmp = a; * a = b;@p * b = tmp; @rpvar depends on patch@ identifier tmp; expression a, b; type T; @@ ( - T tmp; | - T tmp = 0; | - T *tmp = NULL; ) ... when != tmp - tmp = a; - a = b; - b = tmp + swap(a, b) ; ... when != tmp @rp depends on patch@ identifier tmp; expression a, b; @@ - tmp = a; - a = b; - b = tmp + swap(a, b) ; @depends on patch && (rpvar || rp)@ @@ ( for (...;...;...) - { swap(...); - } | while (...) - { swap(...); - } | if (...) - { swap(...); - } ) @script:python depends on report@ p << r.p; @@ coccilib.report.print_report(p[0], "WARNING opportunity for swap()") @script:python depends on org@ p << r.p; @@ coccilib.org.print_todo(p[0], "WARNING opportunity for swap()") @script:python depends on report@ p << rvar.p; @@ coccilib.report.print_report(p[0], "WARNING opportunity for swap()") @script:python depends on org@ p << rvar.p; @@ coccilib.org.print_todo(p[0], "WARNING opportunity for swap()") |