| 1 | // Test that disabling/enabling tagging does not trigger false reports on |
|---|
| 2 | // allocations happened in a different state. |
|---|
| 3 | |
|---|
| 4 | // RUN: %clang_hwasan -O1 %s -o %t && %run %t 2>&1 |
|---|
| 5 | |
|---|
| 6 | #include <assert.h> |
|---|
| 7 | #include <sanitizer/hwasan_interface.h> |
|---|
| 8 | #include <stdlib.h> |
|---|
| 9 | |
|---|
| 10 | enum { |
|---|
| 11 | COUNT = 5, |
|---|
| 12 | SZ = 10, |
|---|
| 13 | }; |
|---|
| 14 | void *x[COUNT]; |
|---|
| 15 | |
|---|
| 16 | int main() { |
|---|
| 17 | __hwasan_enable_allocator_tagging(); |
|---|
| 18 | for (unsigned i = 0; i < COUNT; ++i) { |
|---|
| 19 | x[i] = malloc(size: SZ); |
|---|
| 20 | assert(__hwasan_test_shadow(x[i], SZ) == -1); |
|---|
| 21 | } |
|---|
| 22 | for (unsigned i = 0; i < COUNT; ++i) |
|---|
| 23 | free(ptr: x[i]); |
|---|
| 24 | |
|---|
| 25 | __hwasan_disable_allocator_tagging(); |
|---|
| 26 | for (unsigned i = 0; i < COUNT; ++i) { |
|---|
| 27 | x[i] = malloc(size: SZ); |
|---|
| 28 | assert(__hwasan_tag_pointer(x[i], 0) == x[i]); |
|---|
| 29 | assert(__hwasan_test_shadow(x[i], SZ) == -1); |
|---|
| 30 | } |
|---|
| 31 | for (unsigned i = 0; i < COUNT; ++i) |
|---|
| 32 | free(ptr: x[i]); |
|---|
| 33 | |
|---|
| 34 | __hwasan_enable_allocator_tagging(); |
|---|
| 35 | for (unsigned i = 0; i < COUNT; ++i) { |
|---|
| 36 | x[i] = malloc(size: SZ); |
|---|
| 37 | assert(__hwasan_test_shadow(x[i], SZ) == -1); |
|---|
| 38 | } |
|---|
| 39 | for (unsigned i = 0; i < COUNT; ++i) |
|---|
| 40 | free(ptr: x[i]); |
|---|
| 41 | return 0; |
|---|
| 42 | } |
|---|
| 43 | |
|---|
