| 1 | // RUN: %clang_dfsan -gmlt -DOFFSET=0 -mllvm -dfsan-track-origins=1 %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=CHECK0 < %t.out |
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| 4 | // |
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| 5 | // RUN: %clang_dfsan -gmlt -DOFFSET=10 -mllvm -dfsan-track-origins=1 %s -o %t && \ |
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| 6 | // RUN: %run %t >%t.out 2>&1 |
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| 7 | // RUN: FileCheck %s --check-prefix=CHECK10 < %t.out |
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| 8 | |
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| 9 | #include <sanitizer/dfsan_interface.h> |
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| 10 | |
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| 11 | #include <string.h> |
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| 12 | |
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| 13 | int xx[10000]; |
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| 14 | int yy[10000]; |
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| 15 | volatile int idx = 30; |
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| 16 | |
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| 17 | __attribute__((noinline)) |
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| 18 | void fn_g(int a, int b) { |
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| 19 | xx[idx] = a; xx[idx + 10] = b; |
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| 20 | } |
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| 21 | |
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| 22 | __attribute__((noinline)) |
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| 23 | void fn_f(int a, int b) { |
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| 24 | fn_g(a, b); |
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| 25 | } |
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| 26 | |
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| 27 | __attribute__((noinline)) |
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| 28 | void fn_h() { |
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| 29 | memcpy(dest: &yy, src: &xx, n: sizeof(xx)); |
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| 30 | } |
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| 31 | |
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| 32 | int main(int argc, char *argv[]) { |
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| 33 | int volatile z1 = 0; |
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| 34 | int volatile z2 = 0; |
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| 35 | dfsan_set_label(label: 8, addr: (void *)&z1, size: sizeof(z1)); |
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| 36 | dfsan_set_label(label: 16, addr: (void *)&z2, size: sizeof(z2)); |
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| 37 | fn_f(a: z1, b: z2); |
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| 38 | fn_h(); |
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| 39 | dfsan_print_origin_trace(&yy[idx + OFFSET], NULL); |
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| 40 | return 0; |
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| 41 | } |
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| 42 | |
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| 43 | // CHECK0: Taint value 0x8 {{.*}} origin tracking () |
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| 44 | // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at |
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| 45 | // CHECK0: #0 {{.*}} in fn_h.dfsan {{.*}}origin_memcpy.c:[[@LINE-16]] |
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| 46 | // CHECK0: #1 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-8]] |
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| 47 | |
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| 48 | // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at |
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| 49 | // CHECK0: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memcpy.c:[[@LINE-30]] |
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| 50 | // CHECK0: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memcpy.c:[[@LINE-26]] |
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| 51 | // CHECK0: #2 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-14]] |
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| 52 | |
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| 53 | // CHECK0: Origin value: {{.*}}, Taint value was created at |
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| 54 | // CHECK0: #0 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-19]] |
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| 55 | |
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| 56 | // CHECK10: Taint value 0x10 {{.*}} origin tracking () |
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| 57 | // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at |
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| 58 | // CHECK10: #0 {{.*}} in fn_h.dfsan {{.*}}origin_memcpy.c:[[@LINE-29]] |
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| 59 | // CHECK10: #1 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-21]] |
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| 60 | |
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| 61 | // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at |
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| 62 | // CHECK10: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memcpy.c:[[@LINE-43]] |
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| 63 | // CHECK10: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memcpy.c:[[@LINE-39]] |
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| 64 | // CHECK10: #2 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-27]] |
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| 65 | |
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| 66 | // CHECK10: Origin value: {{.*}}, Taint value was created at |
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| 67 | // CHECK10: #0 {{.*}} in main {{.*}}origin_memcpy.c:[[@LINE-31]] |
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| 68 | |
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