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