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=1 %run %t
5
6 #include <assert.h>
7 #include <stdlib.h>
8
bar(char * p,char * q)9 int bar(char *p, char *q) {
10 return p - q;
11 }
12
13 char global[10000] = {};
14
main()15 int main() {
16 // Heap allocated memory.
17 char *p = (char *)malloc(42);
18 int r = bar(p, p + 20);
19 free(p);
20
21 // Global variable.
22 bar(&global[0], &global[100]);
23 bar(&global[1000], &global[9000]);
24 bar(&global[500], &global[10]);
25 bar(&global[0], &global[10000]);
26
27 // Stack variable.
28 char stack[10000];
29 bar(&stack[0], &stack[100]);
30 bar(&stack[1000], &stack[9000]);
31 bar(&stack[500], &stack[10]);
32
33 return 0;
34 }
35