forked from OSchip/llvm-project
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
// RUN: %clang_dfsan %s -o %t && %run %t
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// RUN: %clang_dfsan -mllvm -dfsan-args-abi %s -o %t && %run %t
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// Tests that labels are propagated through computation and that union labels
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// are properly created.
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#include <sanitizer/dfsan_interface.h>
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#include <assert.h>
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int main(void) {
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assert(dfsan_union(0, 0) == 0);
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int i = 1;
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dfsan_label i_label = dfsan_create_label("i", 0);
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dfsan_set_label(i_label, &i, sizeof(i));
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int j = 2;
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dfsan_label j_label = dfsan_create_label("j", 0);
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dfsan_set_label(j_label, &j, sizeof(j));
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int k = 3;
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dfsan_label k_label = dfsan_create_label("k", 0);
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dfsan_set_label(k_label, &k, sizeof(k));
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int k2 = 4;
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dfsan_set_label(k_label, &k2, sizeof(k2));
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dfsan_label ij_label = dfsan_get_label(i + j);
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assert(dfsan_has_label(ij_label, i_label));
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assert(dfsan_has_label(ij_label, j_label));
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assert(!dfsan_has_label(ij_label, k_label));
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// Test uniquing.
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assert(dfsan_union(i_label, j_label) == ij_label);
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assert(dfsan_union(j_label, i_label) == ij_label);
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dfsan_label ijk_label = dfsan_get_label(i + j + k);
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assert(dfsan_has_label(ijk_label, i_label));
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assert(dfsan_has_label(ijk_label, j_label));
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assert(dfsan_has_label(ijk_label, k_label));
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assert(dfsan_get_label(k + k2) == k_label);
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struct { int i, j; } s = { i, j };
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assert(dfsan_read_label(&s, sizeof(s)) == ij_label);
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return 0;
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}
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