| 1 | // RUN: %clang_dfsan %s -o %t && %run %t |
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| 2 | // |
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| 3 | // RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t && \ |
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| 4 | // RUN: %run %t >%t.out 2>&1 |
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| 5 | // RUN: FileCheck %s < %t.out |
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| 6 | // |
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| 7 | // RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 -mllvm -dfsan-instrument-with-call-threshold=0 %s -o %t && \ |
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| 8 | // RUN: %run %t >%t.out 2>&1 |
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| 9 | // RUN: FileCheck %s < %t.out |
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| 10 | |
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| 11 | #include <sanitizer/dfsan_interface.h> |
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| 12 | |
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| 13 | #include <assert.h> |
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| 14 | #include <pthread.h> |
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| 15 | #include <string.h> |
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| 16 | |
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| 17 | const int kNumThreads = 24; |
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| 18 | int x = 0; |
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| 19 | int __thread y, z; |
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| 20 | |
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| 21 | static void *ThreadFn(void *a) { |
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| 22 | y = x; |
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| 23 | assert(dfsan_get_label(y) == 8); |
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| 24 | memcpy(dest: &z, src: &y, n: sizeof(y)); |
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| 25 | if ((int)a == 7) |
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| 26 | dfsan_print_origin_trace(addr: &z, NULL); |
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| 27 | return 0; |
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| 28 | } |
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| 29 | |
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| 30 | int main(void) { |
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| 31 | dfsan_set_label(label: 8, addr: &x, size: sizeof(x)); |
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| 32 | |
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| 33 | pthread_t t[kNumThreads]; |
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| 34 | for (size_t i = 0; i < kNumThreads; ++i) |
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| 35 | pthread_create(newthread: &t[i], attr: 0, start_routine: ThreadFn, arg: (void *)i); |
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| 36 | |
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| 37 | for (size_t i = 0; i < kNumThreads; ++i) |
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| 38 | pthread_join(th: t[i], thread_return: 0); |
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| 39 | |
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| 40 | return 0; |
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| 41 | } |
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| 42 | |
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| 43 | // CHECK: Taint value 0x8 {{.*}} origin tracking () |
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| 44 | // CHECK: Origin value: {{.*}}, Taint value was stored to memory at |
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| 45 | // CHECK: #0 {{.*}} in ThreadFn.dfsan {{.*}}pthread.c:[[@LINE-21]] |
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| 46 | |
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| 47 | // CHECK: Origin value: {{.*}}, Taint value was stored to memory at |
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| 48 | // CHECK: #0 {{.*}} in ThreadFn.dfsan {{.*}}pthread.c:[[@LINE-26]] |
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| 49 | |
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| 50 | // CHECK: Origin value: {{.*}}, Taint value was created at |
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| 51 | // CHECK: #0 {{.*}} in main {{.*}}pthread.c:[[@LINE-20]] |
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| 52 | |
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