| 1 | // RUN: %clang_dfsan -gmlt -DTEST64 -DALIGN=8 -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 < %t.out |
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| 4 | // |
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| 5 | // RUN: %clang_dfsan -gmlt -DTEST32 -DALIGN=4 -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 < %t.out |
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| 8 | // |
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| 9 | // RUN: %clang_dfsan -gmlt -DALIGN=2 -mllvm -dfsan-track-origins=1 %s -o %t && \ |
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| 10 | // RUN: %run %t >%t.out 2>&1 |
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| 11 | // RUN: FileCheck %s < %t.out |
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| 12 | // |
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| 13 | // RUN: %clang_dfsan -gmlt -DTEST64 -DALIGN=4 -mllvm -dfsan-track-origins=1 %s -o %t && \ |
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| 14 | // RUN: %run %t >%t.out 2>&1 |
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| 15 | // RUN: FileCheck %s < %t.out |
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| 16 | // |
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| 17 | // RUN: %clang_dfsan -gmlt -DTEST32 -DALIGN=2 -mllvm -dfsan-track-origins=1 %s -o %t && \ |
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| 18 | // RUN: %run %t >%t.out 2>&1 |
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| 19 | // RUN: FileCheck %s < %t.out |
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| 20 | // |
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| 21 | // RUN: %clang_dfsan -gmlt -DALIGN=1 -mllvm -dfsan-track-origins=1 %s -o %t && \ |
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| 22 | // RUN: %run %t >%t.out 2>&1 |
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| 23 | // RUN: FileCheck %s < %t.out |
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| 24 | // |
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| 25 | // Test origin tracking is accurate in terms of partial store/load, and |
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| 26 | // different aligments. Do not test alignments that are not power of 2. |
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| 27 | // Compilers do not always allow this. |
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| 28 | |
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| 29 | #include <sanitizer/dfsan_interface.h> |
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| 30 | |
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| 31 | #ifdef TEST64 |
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| 32 | typedef uint64_t FULL_TYPE; |
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| 33 | typedef uint32_t HALF_TYPE; |
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| 34 | #elif defined(TEST32) |
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| 35 | typedef uint32_t FULL_TYPE; |
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| 36 | typedef uint16_t HALF_TYPE; |
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| 37 | #else |
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| 38 | typedef uint16_t FULL_TYPE; |
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| 39 | typedef uint8_t HALF_TYPE; |
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| 40 | #endif |
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| 41 | |
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| 42 | __attribute__((noinline)) FULL_TYPE foo(FULL_TYPE a, FULL_TYPE b) { return a + b; } |
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| 43 | |
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| 44 | int main(int argc, char *argv[]) { |
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| 45 | char x __attribute__((aligned(ALIGN))) = 1, y = 2; |
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| 46 | dfsan_set_label(label: 8, addr: &x, size: sizeof(x)); |
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| 47 | char z __attribute__((aligned(ALIGN))) = x + y; |
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| 48 | dfsan_print_origin_trace(addr: &z, NULL); |
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| 49 | |
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| 50 | FULL_TYPE a __attribute__((aligned(ALIGN))) = 1; |
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| 51 | FULL_TYPE b = 10; |
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| 52 | dfsan_set_label(label: 4, addr: (HALF_TYPE *)&a + 1, size: sizeof(HALF_TYPE)); |
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| 53 | FULL_TYPE c __attribute__((aligned(ALIGN))) = foo(a, b); |
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| 54 | dfsan_print_origin_trace(addr: &c, NULL); |
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| 55 | dfsan_print_origin_trace(addr: (HALF_TYPE *)&c + 1, NULL); |
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| 56 | } |
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| 57 | |
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| 58 | // CHECK: Taint value 0x8 {{.*}} origin tracking () |
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| 59 | // CHECK: Origin value: {{.*}}, Taint value was stored to memory at |
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| 60 | // CHECK: #0 {{.*}} in main {{.*}}origin_ldst.c:[[@LINE-13]] |
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| 61 | |
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| 62 | // CHECK: Origin value: {{.*}}, Taint value was created at |
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| 63 | // CHECK: #0 {{.*}} in main {{.*}}origin_ldst.c:[[@LINE-17]] |
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| 64 | |
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| 65 | // CHECK: Taint value 0x4 {{.*}} origin tracking () |
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| 66 | // CHECK: Origin value: {{.*}}, Taint value was stored to memory at |
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| 67 | // CHECK: #0 {{.*}} in main {{.*}}origin_ldst.c:[[@LINE-14]] |
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| 68 | |
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| 69 | // CHECK: Origin value: {{.*}}, Taint value was created at |
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| 70 | // CHECK: #0 {{.*}} in main {{.*}}origin_ldst.c:[[@LINE-18]] |
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| 71 | |
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| 72 | // CHECK: Taint value 0x4 {{.*}} origin tracking () |
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| 73 | // CHECK: Origin value: {{.*}}, Taint value was stored to memory at |
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| 74 | // CHECK: #0 {{.*}} in main {{.*}}origin_ldst.c:[[@LINE-21]] |
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| 75 | |
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| 76 | // CHECK: Origin value: {{.*}}, Taint value was created at |
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| 77 | // CHECK: #0 {{.*}} in main {{.*}}origin_ldst.c:[[@LINE-25]] |
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| 78 | |
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