| // RUN: %clang_dfsan -gmlt -DOFFSET=0 -mllvm -dfsan-track-origins=1 %s -o %t && \ |
| // RUN: %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s --check-prefix=CHECK0 < %t.out |
| // |
| // RUN: %clang_dfsan -gmlt -DOFFSET=10 -mllvm -dfsan-track-origins=1 %s -o %t && \ |
| // RUN: %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s --check-prefix=CHECK10 < %t.out |
| // |
| // REQUIRES: x86_64-target-arch |
| |
| #include <sanitizer/dfsan_interface.h> |
| |
| #include <string.h> |
| |
| int xx[10000]; |
| int yy[10000]; |
| volatile int idx = 30; |
| |
| __attribute__((noinline)) |
| void fn_g(int a, int b) { |
| xx[idx] = a; xx[idx + 10] = b; |
| } |
| |
| __attribute__((noinline)) |
| void fn_f(int a, int b) { |
| fn_g(a, b); |
| } |
| |
| __attribute__((noinline)) |
| void fn_h() { |
| memcpy(&yy, &xx, sizeof(xx)); |
| } |
| |
| int main(int argc, char *argv[]) { |
| int volatile z1 = 0; |
| int volatile z2 = 0; |
| dfsan_set_label(8, (void *)&z1, sizeof(z1)); |
| dfsan_set_label(16, (void *)&z2, sizeof(z2)); |
| fn_f(z1, z2); |
| fn_h(); |
| dfsan_print_origin_trace(&yy[idx + OFFSET], NULL); |
| return 0; |
| } |
| |
| // CHECK0: Taint value 0x8 {{.*}} origin tracking () |
| // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at |
| // CHECK0: #0 {{.*}} in fn_h.dfsan {{.*}}origin_memcpy.c:[[@LINE-16]] |
| // CHECK0: #1 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-8]] |
| |
| // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at |
| // CHECK0: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memcpy.c:[[@LINE-30]] |
| // CHECK0: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memcpy.c:[[@LINE-26]] |
| // CHECK0: #2 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-14]] |
| |
| // CHECK0: Origin value: {{.*}}, Taint value was created at |
| // CHECK0: #0 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-19]] |
| |
| // CHECK10: Taint value 0x10 {{.*}} origin tracking () |
| // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at |
| // CHECK10: #0 {{.*}} in fn_h.dfsan {{.*}}origin_memcpy.c:[[@LINE-29]] |
| // CHECK10: #1 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-21]] |
| |
| // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at |
| // CHECK10: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memcpy.c:[[@LINE-43]] |
| // CHECK10: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memcpy.c:[[@LINE-39]] |
| // CHECK10: #2 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-27]] |
| |
| // CHECK10: Origin value: {{.*}}, Taint value was created at |
| // CHECK10: #0 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-31]] |