1// RUN: %clang_dfsan -mllvm -dfsan-fast-16-labels=true %s -o %t && %run %t
2//
3// RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 -mllvm -dfsan-fast-16-labels=true %s -o %t && \
4// RUN: %run %t >%t.out 2>&1
5// RUN: FileCheck %s < %t.out
6//
7// RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 -mllvm -dfsan-fast-16-labels=true -mllvm -dfsan-instrument-with-call-threshold=0 %s -o %t && \
8// RUN: %run %t >%t.out 2>&1
9// RUN: FileCheck %s < %t.out
10//
11// REQUIRES: x86_64-target-arch
12
13#include <sanitizer/dfsan_interface.h>
14
15#include <assert.h>
16#include <pthread.h>
17#include <string.h>
18
19const int kNumThreads = 24;
20int x = 0;
21int __thread y, z;
22
23static void *ThreadFn(void *a) {
24 y = x;
25 assert(dfsan_get_label(y) == 8);
26 memcpy(&z, &y, sizeof(y));
27 if ((int)a == 7)
28 dfsan_print_origin_trace(&z, NULL);
29 return 0;
30}
31
32int main(void) {
33 dfsan_set_label(8, &x, sizeof(x));
34
35 pthread_t t[kNumThreads];
36 for (size_t i = 0; i < kNumThreads; ++i)
37 pthread_create(&t[i], 0, ThreadFn, (void *)i);
38
39 for (size_t i = 0; i < kNumThreads; ++i)
40 pthread_join(t[i], 0);
41
42 return 0;
43}
44
45// CHECK: Taint value 0x8 {{.*}} origin tracking ()
46// CHECK: Origin value: {{.*}}, Taint value was stored to memory at
47// CHECK: #0 {{.*}} in dfs$ThreadFn {{.*}}pthread.c:[[@LINE-21]]
48
49// CHECK: Origin value: {{.*}}, Taint value was stored to memory at
50// CHECK: #0 {{.*}} in dfs$ThreadFn {{.*}}pthread.c:[[@LINE-26]]
51
52// CHECK: Origin value: {{.*}}, Taint value was created at
53// CHECK: #0 {{.*}} in main {{.*}}pthread.c:[[@LINE-20]]
54