1 | // RUN: %clangxx_asan -O0 %s -o %t -mllvm -asan-detect-invalid-pointer-pair |
2 | |
3 | // RUN: %env_asan_opts=detect_invalid_pointer_pairs=2 %run %t |
4 | // RUN: %env_asan_opts=detect_invalid_pointer_pairs=2,detect_stack_use_after_return=0 %run %t |
5 | |
6 | #include <assert.h> |
7 | #include <stdlib.h> |
8 | |
9 | int bar(char *p, char *q) { |
10 | return p - q; |
11 | } |
12 | |
13 | char global[10000] = {}; |
14 | |
15 | int main() { |
16 | // Heap allocated memory. |
17 | char *p = (char *)malloc(size: 42); |
18 | int r = bar(p, q: p + 20); |
19 | free(ptr: p); |
20 | |
21 | // Global variable. |
22 | bar(p: &global[0], q: &global[100]); |
23 | bar(p: &global[1000], q: &global[9000]); |
24 | bar(p: &global[500], q: &global[10]); |
25 | bar(p: &global[0], q: &global[10000]); |
26 | |
27 | // Stack variable. |
28 | char stack[10000]; |
29 | bar(p: &stack[0], q: &stack[100]); |
30 | bar(p: &stack[1000], q: &stack[9000]); |
31 | bar(p: &stack[500], q: &stack[10]); |
32 | |
33 | return 0; |
34 | } |
35 | |