1 // RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t && \
2 // RUN: %run %t 2>&1 | FileCheck %s
3 //
4 // REQUIRES: x86_64-target-arch
5
6 #include <assert.h>
7 #include <sanitizer/dfsan_interface.h>
8 #include <stdio.h>
9
foo(uint64_t a,uint64_t b)10 __attribute__((noinline)) uint64_t foo(uint64_t a, uint64_t b) { return a + b; }
11
main(int argc,char * argv[])12 int main(int argc, char *argv[]) {
13 uint64_t a = 10;
14 uint64_t b = 20;
15 dfsan_set_label(8, &a, sizeof(a));
16 uint64_t c = foo(a, b);
17
18 dfsan_origin c_orig = dfsan_get_origin(c);
19 fprintf(stderr, "c_orig 0x%x\n", c_orig);
20 // CHECK: c_orig 0x[[#%x,C_ORIG:]]
21 assert(c_orig != 0);
22 dfsan_print_origin_id_trace(c_orig);
23 // CHECK: Origin value: 0x[[#%x,C_ORIG]], Taint value was created at
24
25 uint64_t d[4] = {1, 2, 3, c};
26 dfsan_origin d_orig = dfsan_read_origin_of_first_taint(d, sizeof(d));
27 fprintf(stderr, "d_orig 0x%x\n", d_orig);
28 // CHECK: d_orig 0x[[#%x,D_ORIG:]]
29 assert(d_orig != 0);
30 dfsan_print_origin_id_trace(d_orig);
31 // CHECK: Origin value: 0x[[#%x,D_ORIG]], Taint value was stored to memory at
32 // CHECK: Origin value: 0x[[#%x,C_ORIG]], Taint value was created at
33 return 0;
34 }
35