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

   1 // This is the ASAN test of the same name ported to HWAsan.
   2
   3 // RUN: %clangxx_hwasan -mllvm -hwasan-use-after-scope -O1 %s -o %t && \
   4 // RUN:     not %run %t 2>&1 | FileCheck %s
   5
   6 // REQUIRES: aarch64-target-arch
   7 // REQUIRES: stable-runtime
   8
   9 #include <stdio.h>
  10
  11 struct IntHolder {
  12   explicit IntHolder(int *val = 0) : val_(val) {}
  13   __attribute__((noinline)) ~IntHolder() {
  14     printf("Value: %d\n", *val_); // BOOM
  15     // CHECK: ERROR: HWAddressSanitizer: tag-mismatch
  16     // CHECK:  #0 0x{{.*}} in IntHolder::~IntHolder{{.*}}.cpp:[[@LINE-2]]
  17   }
  18   void set(int *val) { val_ = val; }
  19   int *get() { return val_; }
  20
  21   int *val_;
  22 };
  23
  24 int main(int argc, char *argv[]) {
  25   // It is incorrect to use "x" int IntHolder destructor, because "x" is
  26   // "destroyed" earlier as it's declared later.
  27   IntHolder holder;
  28   int x = argc;
  29   holder.set(&x);
  30   return 0;
  31 }