Stephen Hines | 6d18623 | 2014-11-26 17:56:19 -0800 | [diff] [blame] | 1 | // Check that the stack trace debugging API works and returns correct |
| 2 | // malloc and free stacks. |
| 3 | // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s |
| 4 | |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 5 | // FIXME: Figure out why allocation/free stack traces may be too short on ARM. |
| 6 | // REQUIRES: stable-runtime |
| 7 | |
Stephen Hines | 6d18623 | 2014-11-26 17:56:19 -0800 | [diff] [blame] | 8 | #include <sanitizer/asan_interface.h> |
| 9 | #include <stdio.h> |
| 10 | #include <stdlib.h> |
| 11 | |
| 12 | char *mem; |
| 13 | void func1() { |
| 14 | mem = (char *)malloc(10); |
| 15 | } |
| 16 | |
| 17 | void func2() { |
| 18 | free(mem); |
| 19 | } |
| 20 | |
| 21 | int main() { |
Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 22 | // Disable stderr buffering. Needed on Windows. |
| 23 | setvbuf(stderr, NULL, _IONBF, 0); |
| 24 | |
Stephen Hines | 6d18623 | 2014-11-26 17:56:19 -0800 | [diff] [blame] | 25 | func1(); |
| 26 | func2(); |
| 27 | |
| 28 | void *trace[100]; |
| 29 | size_t num_frames = 100; |
| 30 | int thread_id; |
| 31 | num_frames = __asan_get_alloc_stack(mem, trace, num_frames, &thread_id); |
| 32 | |
| 33 | fprintf(stderr, "alloc stack retval %s\n", (num_frames > 0 && num_frames < 10) |
| 34 | ? "ok" : ""); |
| 35 | // CHECK: alloc stack retval ok |
| 36 | fprintf(stderr, "thread id = %d\n", thread_id); |
| 37 | // CHECK: thread id = 0 |
| 38 | fprintf(stderr, "0x%lx\n", trace[0]); |
| 39 | // CHECK: [[ALLOC_FRAME_0:0x[0-9a-f]+]] |
| 40 | fprintf(stderr, "0x%lx\n", trace[1]); |
| 41 | // CHECK: [[ALLOC_FRAME_1:0x[0-9a-f]+]] |
| 42 | |
| 43 | num_frames = 100; |
| 44 | num_frames = __asan_get_free_stack(mem, trace, num_frames, &thread_id); |
| 45 | |
| 46 | fprintf(stderr, "free stack retval %s\n", (num_frames > 0 && num_frames < 10) |
| 47 | ? "ok" : ""); |
| 48 | // CHECK: free stack retval ok |
| 49 | fprintf(stderr, "thread id = %d\n", thread_id); |
| 50 | // CHECK: thread id = 0 |
| 51 | fprintf(stderr, "0x%lx\n", trace[0]); |
| 52 | // CHECK: [[FREE_FRAME_0:0x[0-9a-f]+]] |
| 53 | fprintf(stderr, "0x%lx\n", trace[1]); |
| 54 | // CHECK: [[FREE_FRAME_1:0x[0-9a-f]+]] |
| 55 | |
| 56 | mem[0] = 'A'; // BOOM |
| 57 | |
| 58 | // CHECK: ERROR: AddressSanitizer: heap-use-after-free |
| 59 | // CHECK: WRITE of size 1 at 0x{{.*}} |
| 60 | // CHECK: freed by thread T0 here: |
| 61 | // CHECK: #0 [[FREE_FRAME_0]] |
| 62 | // CHECK: #1 [[FREE_FRAME_1]] |
| 63 | // CHECK: previously allocated by thread T0 here: |
| 64 | // CHECK: #0 [[ALLOC_FRAME_0]] |
| 65 | // CHECK: #1 [[ALLOC_FRAME_1]] |
| 66 | |
| 67 | return 0; |
| 68 | } |