31 lines · cpp
1// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s2 3// Windows does not have execinfo.h. For now, be conservative and4// restrict the test to glibc.5// REQUIRES: glibc-2.276 7// Test the backtrace() interceptor.8 9#include <assert.h>10#include <execinfo.h>11#include <math.h>12#include <stdio.h>13#include <stdlib.h>14 15#define MAX_BT 10016 17int main() {18 void **buffer = (void **)malloc(sizeof(void *) * MAX_BT);19 assert(buffer != NULL);20 free(buffer);21 22 // Deliberate use-after-free of 'buffer'. We expect ASan to23 // catch this, without triggering internal sanitizer errors.24 int numEntries = backtrace(buffer, MAX_BT);25 printf("backtrace returned %d entries\n", numEntries);26 27 // CHECK: use-after-free28 // CHECK: SUMMARY29 return 0;30}31