| 1 | // RUN: %clangxx_hwasan -DSIZE=16 -O0 %s -o %t && %run %t 2>&1 | FileCheck %s |
|---|
| 2 | |
|---|
| 3 | #include <assert.h> |
|---|
| 4 | #include <stdlib.h> |
|---|
| 5 | #include <sys/mman.h> |
|---|
| 6 | #include <sanitizer/hwasan_interface.h> |
|---|
| 7 | |
|---|
| 8 | int main() { |
|---|
| 9 | char *alloc = (char *)malloc(size: 4096); |
|---|
| 10 | |
|---|
| 11 | // Simulate short granule tags. |
|---|
| 12 | alloc[15] = 0x00; |
|---|
| 13 | alloc[31] = 0xbb; |
|---|
| 14 | alloc[47] = 0xcc; |
|---|
| 15 | alloc[63] = 0xdd; |
|---|
| 16 | alloc[79] = 0xee; |
|---|
| 17 | alloc[95] = 0xff; |
|---|
| 18 | |
|---|
| 19 | char *p = alloc; |
|---|
| 20 | |
|---|
| 21 | // Write tags to shadow. |
|---|
| 22 | __hwasan_tag_memory(p, tag: 1, size: 32); |
|---|
| 23 | __hwasan_tag_memory(p: p + 32, tag: 16, size: 16); |
|---|
| 24 | __hwasan_tag_memory(p: p + 48, tag: 0, size: 32); |
|---|
| 25 | __hwasan_tag_memory(p: p + 80, tag: 4, size: 16); |
|---|
| 26 | |
|---|
| 27 | char *q = (char *)__hwasan_tag_pointer(p, tag: 7); |
|---|
| 28 | __hwasan_print_shadow(x: q + 5, size: 89 - 5); |
|---|
| 29 | // CHECK: HWASan shadow map for {{.*}}5 .. {{.*}}9 (pointer tag 7) |
|---|
| 30 | // CHECK-NEXT: {{.*}}0: 01(00) |
|---|
| 31 | // CHECK-NEXT: {{.*}}0: 01(bb) |
|---|
| 32 | // CHECK-NEXT: {{.*}}0: 10 |
|---|
| 33 | // CHECK-NEXT: {{.*}}0: 00 |
|---|
| 34 | // CHECK-NEXT: {{.*}}0: 00 |
|---|
| 35 | // CHECK-NEXT: {{.*}}0: 04(ff) |
|---|
| 36 | |
|---|
| 37 | free(ptr: alloc); |
|---|
| 38 | } |
|---|
| 39 | |
|---|
