| // 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: DFSAN_OPTIONS=origin_history_size=2 %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s --check-prefix=CHECK2 < %t.out |
| // |
| // RUN: DFSAN_OPTIONS=origin_history_size=0 %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s --check-prefix=CHECK0 < %t.out |
| // |
| // REQUIRES: x86_64-target-arch |
| |
| #include <sanitizer/dfsan_interface.h> |
| |
| #include <stdio.h> |
| |
| __attribute__((noinline)) int foo(int a, int b) { return a + b; } |
| |
| int main(int argc, char *argv[]) { |
| int a = 10; |
| dfsan_set_label(8, &a, sizeof(a)); |
| int c = 0; |
| for (int i = 0; i < 17; ++i) { |
| c = foo(a, c); |
| printf("%lx", (unsigned long)&c); |
| } |
| dfsan_print_origin_trace(&c, NULL); |
| } |
| |
| // CHECK: Taint value 0x8 {{.*}} origin tracking () |
| // CHECK-COUNT 14: Origin value: {{.*}}, Taint value was stored to memory at |
| // CHECK: Origin value: {{.*}}, Taint value was created at |
| |
| // CHECK2: Taint value 0x8 {{.*}} origin tracking () |
| // CHECK2: Origin value: {{.*}}, Taint value was stored to memory at |
| // CHECK2: Origin value: {{.*}}, Taint value was created at |
| |
| // CHECK0: Taint value 0x8 {{.*}} origin tracking () |
| // CHECK0-COUNT 16: Origin value: {{.*}}, Taint value was stored to memory at |
| // CHECK0: Origin value: {{.*}}, Taint value was created at |
