| // RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t && \ |
| // RUN: %run %t 2>&1 | FileCheck %s |
| |
| #include <assert.h> |
| #include <sanitizer/dfsan_interface.h> |
| #include <stdio.h> |
| |
| __attribute__((noinline)) uint64_t foo(uint64_t a, uint64_t b) { return a + b; } |
| |
| int main(int argc, char *argv[]) { |
| uint64_t a = 10; |
| uint64_t b = 20; |
| dfsan_set_label(8, &a, sizeof(a)); |
| uint64_t c = foo(a, b); |
| |
| dfsan_origin c_orig = dfsan_get_origin(c); |
| fprintf(stderr, "c_orig 0x%x\n", c_orig); |
| // CHECK: c_orig 0x[[#%x,C_ORIG:]] |
| assert(c_orig != 0); |
| dfsan_print_origin_id_trace(c_orig); |
| // CHECK: Origin value: 0x[[#%x,C_ORIG]], Taint value was created at |
| |
| uint64_t d[4] = {1, 2, 3, c}; |
| dfsan_origin d_orig = dfsan_read_origin_of_first_taint(d, sizeof(d)); |
| fprintf(stderr, "d_orig 0x%x\n", d_orig); |
| // CHECK: d_orig 0x[[#%x,D_ORIG:]] |
| assert(d_orig != 0); |
| dfsan_print_origin_id_trace(d_orig); |
| // CHECK: Origin value: 0x[[#%x,D_ORIG]], Taint value was stored to memory at |
| // CHECK: Origin value: 0x[[#%x,C_ORIG]], Taint value was created at |
| return 0; |
| } |