35 lines · cpp
1// RUN: %clangxx_asan -O0 %s -o %t -mllvm -asan-detect-invalid-pointer-pair2 3// RUN: %env_asan_opts=detect_invalid_pointer_pairs=2 %run %t4// RUN: %env_asan_opts=detect_invalid_pointer_pairs=2,detect_stack_use_after_return=0 %run %t5 6#include <assert.h>7#include <stdlib.h>8 9int bar(char *p, char *q) {10 return p - q;11}12 13char global[10000] = {};14 15int 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