derek.holloway
7502bf64a4
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52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
// RUN: %clang_dfsan %s -o %t && %run %t
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//
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// RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t && \
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// RUN: %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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//
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// RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 -mllvm -dfsan-instrument-with-call-threshold=0 %s -o %t && \
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// RUN: %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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#include <sanitizer/dfsan_interface.h>
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#include <assert.h>
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#include <pthread.h>
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#include <string.h>
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const int kNumThreads = 24;
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int x = 0;
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int __thread y, z;
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static void *ThreadFn(void *a) {
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y = x;
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assert(dfsan_get_label(y) == 8);
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memcpy(&z, &y, sizeof(y));
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if ((int)a == 7)
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dfsan_print_origin_trace(&z, NULL);
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return 0;
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}
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int main(void) {
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dfsan_set_label(8, &x, sizeof(x));
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pthread_t t[kNumThreads];
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for (size_t i = 0; i < kNumThreads; ++i)
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pthread_create(&t[i], 0, ThreadFn, (void *)i);
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for (size_t i = 0; i < kNumThreads; ++i)
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pthread_join(t[i], 0);
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return 0;
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}
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// CHECK: Taint value 0x8 {{.*}} origin tracking ()
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// CHECK: Origin value: {{.*}}, Taint value was stored to memory at
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// CHECK: #0 {{.*}} in ThreadFn.dfsan {{.*}}pthread.c:[[@LINE-21]]
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// CHECK: Origin value: {{.*}}, Taint value was stored to memory at
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// CHECK: #0 {{.*}} in ThreadFn.dfsan {{.*}}pthread.c:[[@LINE-26]]
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// CHECK: Origin value: {{.*}}, Taint value was created at
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// CHECK: #0 {{.*}} in main {{.*}}pthread.c:[[@LINE-20]]
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