compiler-rt/test/asan/TestCases/use-after-scope-dtor-order.cpp

   1 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
   2
   3 #include <stdio.h>
   4
   5 struct IntHolder {
   6   explicit IntHolder(int *val = 0) : val_(val) { }
   7   __attribute__((noinline)) ~IntHolder() {
   8     printf("Value: %d\n", *val_);  // BOOM
   9     // CHECK: ERROR: AddressSanitizer: stack-use-after-scope
  10     // CHECK:  #0 0x{{.*}} in IntHolder::~IntHolder{{.*}}.cpp:[[@LINE-2]]
  11   }
  12   void set(int *val) { val_ = val; }
  13   int *get() { return val_; }
  14
  15   int *val_;
  16 };
  17
  18 int main(int argc, char *argv[]) {
  19   // It is incorrect to use "x" int IntHolder destructor, because "x" is
  20   // "destroyed" earlier as it's declared later.
  21   IntHolder holder;
  22   int x = argc;
  23   holder.set(&x);
  24   return 0;
  25 }