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1 // RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 -mllvm -dfsan-fast-16-labels=true %s -o %t && \
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2 // RUN: %run %t >%t.out 2>&1
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3 // RUN: FileCheck %s --check-prefix=CHECK < %t.out
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4 //
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5 // REQUIRES: x86_64-target-arch
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6
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7 #include <sanitizer/dfsan_interface.h>
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8
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9 int main(int argc, char *argv[]) {
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10 char volatile z1;
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11 char volatile z2;
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12 dfsan_set_label(8, (void *)&z1, sizeof(z1));
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13 dfsan_set_label(16, (void *)&z2, sizeof(z2)); // overwritting the old origin.
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14 char c = z1;
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15 dfsan_print_origin_trace(&c, "bar");
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16 return 0;
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17 }
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18
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19 // CHECK: Taint value 0x8 {{.*}} origin tracking (bar)
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20 // CHECK: Origin value: {{.*}}, Taint value was stored to memory at
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21 // CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-7]]
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22
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23 // CHECK: Origin value: {{.*}}, Taint value was created at
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24
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25 // CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-12]]
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