1 // RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 -mllvm -dfsan-fast-16-labels=true %s -o %t && \
2 // RUN:     %run %t >%t.out 2>&1
3 // RUN: FileCheck %s --check-prefix=CHECK < %t.out
4 //
5 // 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 && \
6 // RUN:     %run %t >%t.out 2>&1
7 // RUN: FileCheck %s --check-prefix=CHECK < %t.out
8 //
9 // REQUIRES: x86_64-target-arch
10 
11 #include <sanitizer/dfsan_interface.h>
12 
13 #define NOINLINE __attribute__((noinline))
14 
15 NOINLINE int foo(int a, int b) { return a + b; }
16 
17 NOINLINE void bar(int depth, void *addr, int size) {
18   if (depth) {
19     bar(depth - 1, addr, size);
20   } else {
21     dfsan_set_label(1, addr, size);
22   }
23 }
24 
25 NOINLINE void baz(int depth, void *addr, int size) {
26   bar(depth, addr, size);
27 }
28 
29 int main(int argc, char *argv[]) {
30   int a = 10;
31   int b = 20;
32   baz(8, &a, sizeof(a));
33   int c = foo(a, b);
34   dfsan_print_origin_trace(&c, NULL);
35 }
36 
37 // CHECK: Taint value 0x1 {{.*}} origin tracking ()
38 // CHECK: Origin value: {{.*}}, Taint value was stored to memory at
39 // CHECK: #0 {{.*}} in main {{.*}}origin_stack_trace.c:[[@LINE-6]]
40 
41 // CHECK: Origin value: {{.*}}, Taint value was created at
42 // CHECK: #0 {{.*}} in dfs$bar {{.*}}origin_stack_trace.c:[[@LINE-21]]
43 // CHECK-COUNT-8: #{{[0-9]+}} {{.*}} in dfs$bar {{.*}}origin_stack_trace.c:[[@LINE-24]]
44 // CHECK: #9 {{.*}} in dfs$baz {{.*}}origin_stack_trace.c:[[@LINE-18]]
45