24 lines · c
1// RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t && \2// RUN: %run %t >%t.out 2>&13// RUN: FileCheck %s < %t.out4 5#include <sanitizer/dfsan_interface.h>6 7int main(int argc, char *argv[]) {8 char volatile z1;9 char volatile z2;10 dfsan_set_label(8, (void *)&z1, sizeof(z1));11 dfsan_set_label(16, (void *)&z2, sizeof(z2)); // overwritting the old origin.12 char c = z1;13 dfsan_print_origin_trace(&c, "bar");14 return 0;15}16 17// CHECK: Taint value 0x8 {{.*}} origin tracking (bar)18// CHECK: Origin value: {{.*}}, Taint value was stored to memory at19// CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-7]]20 21// CHECK: Origin value: {{.*}}, Taint value was created at22 23// CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-12]]24