| 1 | // RUN: %clang_analyze_cc1 -analyzer-checker=alpha.unix.PthreadLock -verify %s |
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| 2 | |
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| 3 | // Tests performing normal locking patterns and wrong locking orders |
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| 4 | |
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| 5 | #include "Inputs/system-header-simulator-for-pthread-lock.h" |
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| 6 | |
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| 7 | pthread_mutex_t mtx1, mtx2; |
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| 8 | pthread_mutex_t *pmtx; |
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| 9 | lck_mtx_t lck1, lck2; |
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| 10 | lck_grp_t grp1; |
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| 11 | |
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| 12 | #define NULL 0 |
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| 13 | |
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| 14 | void |
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| 15 | ok1(void) |
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| 16 | { |
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| 17 | pthread_mutex_lock(&mtx1); // no-warning |
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| 18 | } |
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| 19 | |
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| 20 | void |
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| 21 | ok2(void) |
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| 22 | { |
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| 23 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 24 | } |
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| 25 | |
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| 26 | void |
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| 27 | ok3(void) |
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| 28 | { |
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| 29 | pthread_mutex_lock(&mtx1); // no-warning |
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| 30 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 31 | pthread_mutex_lock(&mtx1); // no-warning |
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| 32 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 33 | } |
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| 34 | |
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| 35 | void |
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| 36 | ok4(void) |
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| 37 | { |
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| 38 | pthread_mutex_lock(&mtx1); // no-warning |
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| 39 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 40 | pthread_mutex_lock(&mtx2); // no-warning |
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| 41 | pthread_mutex_unlock(&mtx2); // no-warning |
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| 42 | } |
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| 43 | |
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| 44 | void |
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| 45 | ok5(void) |
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| 46 | { |
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| 47 | if (pthread_mutex_trylock(&mtx1) == 0) // no-warning |
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| 48 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 49 | } |
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| 50 | |
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| 51 | void |
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| 52 | ok6(void) |
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| 53 | { |
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| 54 | lck_mtx_lock(&lck1); // no-warning |
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| 55 | } |
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| 56 | |
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| 57 | void |
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| 58 | ok7(void) |
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| 59 | { |
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| 60 | if (lck_mtx_try_lock(&lck1) != 0) // no-warning |
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| 61 | lck_mtx_unlock(&lck1); // no-warning |
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| 62 | } |
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| 63 | |
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| 64 | void |
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| 65 | ok8(void) |
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| 66 | { |
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| 67 | pthread_mutex_lock(&mtx1); // no-warning |
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| 68 | pthread_mutex_lock(&mtx2); // no-warning |
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| 69 | pthread_mutex_unlock(&mtx2); // no-warning |
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| 70 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 71 | } |
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| 72 | |
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| 73 | void |
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| 74 | ok9(void) |
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| 75 | { |
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| 76 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 77 | if (pthread_mutex_trylock(&mtx1) == 0) // no-warning |
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| 78 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 79 | } |
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| 80 | |
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| 81 | void |
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| 82 | ok10(void) |
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| 83 | { |
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| 84 | if (pthread_mutex_trylock(&mtx1) != 0) // no-warning |
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| 85 | pthread_mutex_lock(&mtx1); // no-warning |
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| 86 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 87 | } |
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| 88 | |
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| 89 | void |
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| 90 | ok11(void) |
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| 91 | { |
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| 92 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 93 | } |
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| 94 | |
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| 95 | void |
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| 96 | ok12(void) |
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| 97 | { |
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| 98 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 99 | pthread_mutex_destroy(&mtx2); // no-warning |
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| 100 | } |
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| 101 | |
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| 102 | void |
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| 103 | ok13(void) |
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| 104 | { |
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| 105 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 106 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 107 | } |
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| 108 | |
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| 109 | void |
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| 110 | ok14(void) |
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| 111 | { |
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| 112 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 113 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 114 | pthread_mutex_unlock(&mtx2); // no-warning |
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| 115 | pthread_mutex_destroy(&mtx2); // no-warning |
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| 116 | } |
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| 117 | |
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| 118 | void |
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| 119 | ok15(void) |
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| 120 | { |
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| 121 | pthread_mutex_lock(&mtx1); // no-warning |
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| 122 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 123 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 124 | } |
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| 125 | |
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| 126 | void |
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| 127 | ok16(void) |
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| 128 | { |
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| 129 | pthread_mutex_init(&mtx1, NULL); // no-warning |
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| 130 | } |
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| 131 | |
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| 132 | void |
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| 133 | ok17(void) |
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| 134 | { |
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| 135 | pthread_mutex_init(&mtx1, NULL); // no-warning |
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| 136 | pthread_mutex_init(&mtx2, NULL); // no-warning |
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| 137 | } |
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| 138 | |
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| 139 | void |
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| 140 | ok18(void) |
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| 141 | { |
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| 142 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 143 | pthread_mutex_init(&mtx1, NULL); // no-warning |
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| 144 | } |
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| 145 | |
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| 146 | void |
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| 147 | ok19(void) |
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| 148 | { |
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| 149 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 150 | pthread_mutex_init(&mtx1, NULL); // no-warning |
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| 151 | pthread_mutex_destroy(&mtx2); // no-warning |
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| 152 | pthread_mutex_init(&mtx2, NULL); // no-warning |
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| 153 | } |
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| 154 | |
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| 155 | void |
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| 156 | ok20(void) |
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| 157 | { |
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| 158 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 159 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 160 | pthread_mutex_init(&mtx1, NULL); // no-warning |
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| 161 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 162 | pthread_mutex_init(&mtx1, NULL); // no-warning |
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| 163 | } |
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| 164 | |
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| 165 | void |
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| 166 | ok21(void) { |
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| 167 | pthread_mutex_lock(pmtx); // no-warning |
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| 168 | pthread_mutex_unlock(pmtx); // no-warning |
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| 169 | } |
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| 170 | |
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| 171 | void |
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| 172 | ok22(void) { |
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| 173 | pthread_mutex_lock(pmtx); // no-warning |
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| 174 | pthread_mutex_unlock(pmtx); // no-warning |
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| 175 | pthread_mutex_lock(pmtx); // no-warning |
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| 176 | pthread_mutex_unlock(pmtx); // no-warning |
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| 177 | } |
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| 178 | |
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| 179 | void ok23(void) { |
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| 180 | if (pthread_mutex_destroy(&mtx1) != 0) // no-warning |
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| 181 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 182 | } |
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| 183 | |
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| 184 | void ok24(void) { |
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| 185 | if (pthread_mutex_destroy(&mtx1) != 0) // no-warning |
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| 186 | pthread_mutex_lock(&mtx1); // no-warning |
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| 187 | } |
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| 188 | |
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| 189 | void ok25(void) { |
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| 190 | if (pthread_mutex_destroy(&mtx1) != 0) // no-warning |
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| 191 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 192 | } |
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| 193 | |
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| 194 | void ok26(void) { |
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| 195 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 196 | if (pthread_mutex_destroy(&mtx1) != 0) // no-warning |
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| 197 | pthread_mutex_lock(&mtx1); // no-warning |
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| 198 | } |
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| 199 | |
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| 200 | void ok27(void) { |
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| 201 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 202 | if (pthread_mutex_destroy(&mtx1) != 0) // no-warning |
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| 203 | pthread_mutex_lock(&mtx1); // no-warning |
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| 204 | else |
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| 205 | pthread_mutex_init(&mtx1, NULL); // no-warning |
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| 206 | } |
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| 207 | |
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| 208 | void ok28(void) { |
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| 209 | if (pthread_mutex_destroy(&mtx1) != 0) { // no-warning |
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| 210 | pthread_mutex_lock(&mtx1); // no-warning |
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| 211 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 212 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 213 | } |
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| 214 | } |
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| 215 | |
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| 216 | void |
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| 217 | bad1(void) |
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| 218 | { |
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| 219 | pthread_mutex_lock(&mtx1); // no-warning |
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| 220 | pthread_mutex_lock(&mtx1); // expected-warning{{This lock has already been acquired}} |
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| 221 | } |
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| 222 | |
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| 223 | void |
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| 224 | bad2(void) |
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| 225 | { |
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| 226 | pthread_mutex_lock(&mtx1); // no-warning |
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| 227 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 228 | pthread_mutex_lock(&mtx1); // no-warning |
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| 229 | pthread_mutex_lock(&mtx1); // expected-warning{{This lock has already been acquired}} |
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| 230 | } |
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| 231 | |
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| 232 | void |
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| 233 | bad3(void) |
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| 234 | { |
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| 235 | pthread_mutex_lock(&mtx1); // no-warning |
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| 236 | pthread_mutex_lock(&mtx2); // no-warning |
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| 237 | pthread_mutex_unlock(&mtx1); // expected-warning{{This was not the most recently acquired lock}} |
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| 238 | pthread_mutex_unlock(&mtx2); |
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| 239 | } |
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| 240 | |
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| 241 | void |
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| 242 | bad4(void) |
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| 243 | { |
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| 244 | if (pthread_mutex_trylock(&mtx1)) // no-warning |
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| 245 | return; |
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| 246 | pthread_mutex_lock(&mtx2); // no-warning |
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| 247 | pthread_mutex_unlock(&mtx1); // expected-warning{{This was not the most recently acquired lock}} |
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| 248 | } |
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| 249 | |
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| 250 | void |
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| 251 | bad5(void) |
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| 252 | { |
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| 253 | lck_mtx_lock(&lck1); // no-warning |
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| 254 | lck_mtx_lock(&lck1); // expected-warning{{This lock has already been acquired}} |
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| 255 | } |
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| 256 | |
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| 257 | void |
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| 258 | bad6(void) |
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| 259 | { |
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| 260 | lck_mtx_lock(&lck1); // no-warning |
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| 261 | lck_mtx_unlock(&lck1); // no-warning |
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| 262 | lck_mtx_lock(&lck1); // no-warning |
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| 263 | lck_mtx_lock(&lck1); // expected-warning{{This lock has already been acquired}} |
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| 264 | } |
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| 265 | |
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| 266 | void |
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| 267 | bad7(void) |
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| 268 | { |
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| 269 | lck_mtx_lock(&lck1); // no-warning |
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| 270 | lck_mtx_lock(&lck2); // no-warning |
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| 271 | lck_mtx_unlock(&lck1); // expected-warning{{This was not the most recently acquired lock}} |
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| 272 | lck_mtx_unlock(&lck2); |
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| 273 | } |
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| 274 | |
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| 275 | void |
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| 276 | bad8(void) |
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| 277 | { |
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| 278 | if (lck_mtx_try_lock(&lck1) == 0) // no-warning |
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| 279 | return; |
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| 280 | lck_mtx_lock(&lck2); // no-warning |
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| 281 | lck_mtx_unlock(&lck1); // expected-warning{{This was not the most recently acquired lock}} |
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| 282 | } |
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| 283 | |
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| 284 | void |
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| 285 | bad9(void) |
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| 286 | { |
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| 287 | lck_mtx_unlock(&lck1); // no-warning |
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| 288 | lck_mtx_unlock(&lck1); // expected-warning{{This lock has already been unlocked}} |
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| 289 | } |
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| 290 | |
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| 291 | void |
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| 292 | bad10(void) |
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| 293 | { |
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| 294 | lck_mtx_lock(&lck1); // no-warning |
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| 295 | lck_mtx_unlock(&lck1); // no-warning |
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| 296 | lck_mtx_unlock(&lck1); // expected-warning{{This lock has already been unlocked}} |
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| 297 | } |
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| 298 | |
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| 299 | static void |
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| 300 | bad11_sub(pthread_mutex_t *lock) |
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| 301 | { |
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| 302 | lck_mtx_unlock(lock); // expected-warning{{This lock has already been unlocked}} |
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| 303 | } |
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| 304 | |
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| 305 | void |
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| 306 | bad11(int i) |
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| 307 | { |
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| 308 | lck_mtx_lock(&lck1); // no-warning |
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| 309 | lck_mtx_unlock(&lck1); // no-warning |
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| 310 | if (i < 5) |
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| 311 | bad11_sub(&lck1); |
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| 312 | } |
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| 313 | |
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| 314 | void |
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| 315 | bad12(void) |
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| 316 | { |
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| 317 | pthread_mutex_lock(&mtx1); // no-warning |
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| 318 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 319 | pthread_mutex_lock(&mtx1); // no-warning |
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| 320 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 321 | pthread_mutex_unlock(&mtx1); // expected-warning{{This lock has already been unlocked}} |
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| 322 | } |
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| 323 | |
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| 324 | void |
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| 325 | bad13(void) |
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| 326 | { |
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| 327 | pthread_mutex_lock(&mtx1); // no-warning |
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| 328 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 329 | pthread_mutex_lock(&mtx2); // no-warning |
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| 330 | pthread_mutex_unlock(&mtx2); // no-warning |
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| 331 | pthread_mutex_unlock(&mtx1); // expected-warning{{This lock has already been unlocked}} |
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| 332 | } |
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| 333 | |
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| 334 | void |
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| 335 | bad14(void) |
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| 336 | { |
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| 337 | pthread_mutex_lock(&mtx1); // no-warning |
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| 338 | pthread_mutex_lock(&mtx2); // no-warning |
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| 339 | pthread_mutex_unlock(&mtx2); // no-warning |
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| 340 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 341 | pthread_mutex_unlock(&mtx2); // expected-warning{{This lock has already been unlocked}} |
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| 342 | } |
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| 343 | |
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| 344 | void |
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| 345 | bad15(void) |
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| 346 | { |
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| 347 | pthread_mutex_lock(&mtx1); // no-warning |
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| 348 | pthread_mutex_lock(&mtx2); // no-warning |
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| 349 | pthread_mutex_unlock(&mtx2); // no-warning |
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| 350 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 351 | pthread_mutex_lock(&mtx1); // no-warning |
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| 352 | pthread_mutex_unlock(&mtx2); // expected-warning{{This lock has already been unlocked}} |
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| 353 | } |
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| 354 | |
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| 355 | void |
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| 356 | bad16(void) |
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| 357 | { |
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| 358 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 359 | pthread_mutex_lock(&mtx1); // expected-warning{{This lock has already been destroyed}} |
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| 360 | } |
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| 361 | |
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| 362 | void |
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| 363 | bad17(void) |
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| 364 | { |
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| 365 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 366 | pthread_mutex_unlock(&mtx1); // expected-warning{{This lock has already been destroyed}} |
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| 367 | } |
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| 368 | |
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| 369 | void |
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| 370 | bad18(void) |
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| 371 | { |
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| 372 | pthread_mutex_destroy(&mtx1); // no-warning |
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| 373 | pthread_mutex_destroy(&mtx1); // expected-warning{{This lock has already been destroyed}} |
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| 374 | } |
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| 375 | |
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| 376 | void |
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| 377 | bad19(void) |
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| 378 | { |
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| 379 | pthread_mutex_lock(&mtx1); // no-warning |
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| 380 | pthread_mutex_destroy(&mtx1); // expected-warning{{This lock is still locked}} |
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| 381 | } |
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| 382 | |
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| 383 | void |
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| 384 | bad20(void) |
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| 385 | { |
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| 386 | lck_mtx_destroy(&mtx1, &grp1); // no-warning |
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| 387 | lck_mtx_lock(&mtx1); // expected-warning{{This lock has already been destroyed}} |
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| 388 | } |
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| 389 | |
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| 390 | void |
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| 391 | bad21(void) |
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| 392 | { |
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| 393 | lck_mtx_destroy(&mtx1, &grp1); // no-warning |
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| 394 | lck_mtx_unlock(&mtx1); // expected-warning{{This lock has already been destroyed}} |
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| 395 | } |
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| 396 | |
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| 397 | void |
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| 398 | bad22(void) |
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| 399 | { |
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| 400 | lck_mtx_destroy(&mtx1, &grp1); // no-warning |
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| 401 | lck_mtx_destroy(&mtx1, &grp1); // expected-warning{{This lock has already been destroyed}} |
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| 402 | } |
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| 403 | |
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| 404 | void |
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| 405 | bad23(void) |
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| 406 | { |
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| 407 | lck_mtx_lock(&mtx1); // no-warning |
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| 408 | lck_mtx_destroy(&mtx1, &grp1); // expected-warning{{This lock is still locked}} |
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| 409 | } |
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| 410 | |
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| 411 | void |
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| 412 | bad24(void) |
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| 413 | { |
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| 414 | pthread_mutex_init(&mtx1, NULL); // no-warning |
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| 415 | pthread_mutex_init(&mtx1, NULL); // expected-warning{{This lock has already been initialized}} |
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| 416 | } |
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| 417 | |
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| 418 | void |
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| 419 | bad25(void) |
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| 420 | { |
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| 421 | pthread_mutex_lock(&mtx1); // no-warning |
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| 422 | pthread_mutex_init(&mtx1, NULL); // expected-warning{{This lock is still being held}} |
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| 423 | } |
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| 424 | |
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| 425 | void |
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| 426 | bad26(void) |
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| 427 | { |
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| 428 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 429 | pthread_mutex_init(&mtx1, NULL); // expected-warning{{This lock has already been initialized}} |
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| 430 | } |
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| 431 | |
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| 432 | void bad27(void) { |
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| 433 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 434 | int ret = pthread_mutex_destroy(&mtx1); // no-warning |
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| 435 | if (ret != 0) // no-warning |
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| 436 | pthread_mutex_lock(&mtx1); // no-warning |
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| 437 | else |
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| 438 | pthread_mutex_unlock(&mtx1); // expected-warning{{This lock has already been destroyed}} |
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| 439 | } |
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| 440 | |
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| 441 | void bad28(void) { |
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| 442 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 443 | int ret = pthread_mutex_destroy(&mtx1); // no-warning |
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| 444 | if (ret != 0) // no-warning |
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| 445 | pthread_mutex_lock(&mtx1); // no-warning |
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| 446 | else |
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| 447 | pthread_mutex_lock(&mtx1); // expected-warning{{This lock has already been destroyed}} |
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| 448 | } |
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| 449 | |
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| 450 | void bad29(void) { |
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| 451 | pthread_mutex_lock(&mtx1); // no-warning |
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| 452 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 453 | if (pthread_mutex_destroy(&mtx1) != 0) // no-warning |
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| 454 | pthread_mutex_init(&mtx1, NULL); // expected-warning{{This lock has already been initialized}} |
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| 455 | else |
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| 456 | pthread_mutex_init(&mtx1, NULL); // no-warning |
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| 457 | } |
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| 458 | |
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| 459 | void bad30(void) { |
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| 460 | pthread_mutex_lock(&mtx1); // no-warning |
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| 461 | pthread_mutex_unlock(&mtx1); // no-warning |
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| 462 | if (pthread_mutex_destroy(&mtx1) != 0) // no-warning |
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| 463 | pthread_mutex_init(&mtx1, NULL); // expected-warning{{This lock has already been initialized}} |
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| 464 | else |
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| 465 | pthread_mutex_destroy(&mtx1); // expected-warning{{This lock has already been destroyed}} |
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| 466 | } |
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| 467 | |
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| 468 | void bad31(void) { |
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| 469 | int ret = pthread_mutex_destroy(&mtx1); // no-warning |
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| 470 | pthread_mutex_lock(&mtx1); // expected-warning{{This lock has already been destroyed}} |
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| 471 | if (ret != 0) |
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| 472 | pthread_mutex_lock(&mtx1); |
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| 473 | } |
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| 474 | |
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