| 1 | // Check that the stack trace debugging API works and returns correct |
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| 2 | // malloc and free stacks. |
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| 3 | // RUN: %clangxx_asan -O0 %if MSVC %{ /wd4477 %} %s -o %t && not %run %t 2>&1 | FileCheck %s |
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| 4 | |
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| 5 | // FIXME: Figure out why allocation/free stack traces may be too short on ARM. |
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| 6 | // REQUIRES: stable-runtime |
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| 7 | |
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| 8 | #if _WIN64 |
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| 9 | #define PTR "%llx" |
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| 10 | #else |
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| 11 | #define PTR "%lx" |
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| 12 | #endif |
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| 13 | |
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| 14 | #include <sanitizer/asan_interface.h> |
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| 15 | #include <stdio.h> |
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| 16 | #include <stdlib.h> |
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| 17 | |
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| 18 | char *mem; |
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| 19 | void func1() { |
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| 20 | mem = (char *)malloc(size: 10); |
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| 21 | } |
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| 22 | |
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| 23 | void func2() { |
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| 24 | free(ptr: mem); |
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| 25 | } |
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| 26 | |
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| 27 | int main() { |
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| 28 | // Disable stderr buffering. Needed on Windows. |
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| 29 | setvbuf(stderr, NULL, _IONBF, n: 0); |
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| 30 | |
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| 31 | func1(); |
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| 32 | func2(); |
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| 33 | |
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| 34 | void *trace[100]; |
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| 35 | size_t num_frames = 100; |
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| 36 | int thread_id; |
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| 37 | num_frames = __asan_get_alloc_stack(addr: mem, trace, size: num_frames, thread_id: &thread_id); |
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| 38 | |
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| 39 | fprintf(stderr, format: "alloc stack retval %s\n" , (num_frames > 0 && num_frames < 10) |
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| 40 | ? "ok" : "" ); |
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| 41 | // CHECK: alloc stack retval ok |
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| 42 | fprintf(stderr, format: "thread id = %d\n" , thread_id); |
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| 43 | // CHECK: thread id = 0 |
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| 44 | fprintf(stderr, format: "0x" PTR "\n" , trace[0]); |
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| 45 | // CHECK: 0x{{0*}}[[ALLOC_FRAME_0:[0-9a-f]+]] |
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| 46 | fprintf(stderr, format: "0x" PTR "\n" , trace[1]); |
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| 47 | // CHECK: 0x{{0*}}[[ALLOC_FRAME_1:[0-9a-f]+]] |
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| 48 | |
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| 49 | num_frames = 100; |
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| 50 | num_frames = __asan_get_free_stack(addr: mem, trace, size: num_frames, thread_id: &thread_id); |
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| 51 | |
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| 52 | fprintf(stderr, format: "free stack retval %s\n" , (num_frames > 0 && num_frames < 10) |
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| 53 | ? "ok" : "" ); |
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| 54 | // CHECK: free stack retval ok |
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| 55 | fprintf(stderr, format: "thread id = %d\n" , thread_id); |
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| 56 | // CHECK: thread id = 0 |
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| 57 | fprintf(stderr, format: "0x" PTR "\n" , trace[0]); |
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| 58 | // CHECK: 0x{{0*}}[[FREE_FRAME_0:[0-9a-f]+]] |
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| 59 | fprintf(stderr, format: "0x" PTR "\n" , trace[1]); |
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| 60 | // CHECK: 0x{{0*}}[[FREE_FRAME_1:[0-9a-f]+]] |
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| 61 | |
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| 62 | mem[0] = 'A'; // BOOM |
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| 63 | |
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| 64 | // CHECK: ERROR: AddressSanitizer: heap-use-after-free |
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| 65 | // CHECK: WRITE of size 1 at 0x{{.*}} |
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| 66 | // CHECK: freed by thread T0 here: |
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| 67 | // CHECK: #0 0x{{0*}}[[FREE_FRAME_0]] |
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| 68 | // CHECK: #1 0x{{0*}}[[FREE_FRAME_1]] |
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| 69 | // CHECK: previously allocated by thread T0 here: |
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| 70 | // CHECK: #0 0x{{0*}}[[ALLOC_FRAME_0]] |
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| 71 | // CHECK: #1 0x{{0*}}[[ALLOC_FRAME_1]] |
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| 72 | |
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| 73 | return 0; |
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| 74 | } |
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| 75 | |
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