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150
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1 // RUN: %clang_dfsan %s -o %t && %run %t
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2 // RUN: %clang_dfsan -mllvm -dfsan-args-abi %s -o %t && %run %t
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221
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3 //
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4 // REQUIRES: x86_64-target-arch
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150
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5
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6 // Tests that labels are propagated through computation and that union labels
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7 // are properly created.
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8
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9 #include <sanitizer/dfsan_interface.h>
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10 #include <assert.h>
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11
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12 int main(void) {
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13 assert(dfsan_union(0, 0) == 0);
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14
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15 int i = 1;
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16 dfsan_label i_label = dfsan_create_label("i", 0);
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17 dfsan_set_label(i_label, &i, sizeof(i));
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18
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19 int j = 2;
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20 dfsan_label j_label = dfsan_create_label("j", 0);
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21 dfsan_set_label(j_label, &j, sizeof(j));
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22
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23 int k = 3;
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24 dfsan_label k_label = dfsan_create_label("k", 0);
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25 dfsan_set_label(k_label, &k, sizeof(k));
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26
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27 int k2 = 4;
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28 dfsan_set_label(k_label, &k2, sizeof(k2));
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29
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30 dfsan_label ij_label = dfsan_get_label(i + j);
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31 assert(dfsan_has_label(ij_label, i_label));
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32 assert(dfsan_has_label(ij_label, j_label));
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33 assert(!dfsan_has_label(ij_label, k_label));
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34 // Test uniquing.
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35 assert(dfsan_union(i_label, j_label) == ij_label);
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36 assert(dfsan_union(j_label, i_label) == ij_label);
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37
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38 dfsan_label ijk_label = dfsan_get_label(i + j + k);
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39 assert(dfsan_has_label(ijk_label, i_label));
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40 assert(dfsan_has_label(ijk_label, j_label));
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41 assert(dfsan_has_label(ijk_label, k_label));
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42
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43 assert(dfsan_get_label(k + k2) == k_label);
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44
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45 struct { int i, j; } s = { i, j };
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46 assert(dfsan_read_label(&s, sizeof(s)) == ij_label);
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47
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48 return 0;
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49 }
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