use-after-scope-dtor-order.cpp
745 Bytes
// RUN: %clangxx_asan -O1 -fsanitize-address-use-after-scope %s -o %t && \
// RUN: not %run %t 2>&1 | FileCheck %s
#include <stdio.h>
struct IntHolder {
explicit IntHolder(int *val = 0) : val_(val) { }
__attribute__((noinline)) ~IntHolder() {
printf("Value: %d\n", *val_); // BOOM
// CHECK: ERROR: AddressSanitizer: stack-use-after-scope
// CHECK: #0 0x{{.*}} in IntHolder::~IntHolder{{.*}}.cpp:[[@LINE-2]]
}
void set(int *val) { val_ = val; }
int *get() { return val_; }
int *val_;
};
int main(int argc, char *argv[]) {
// It is incorrect to use "x" int IntHolder destructor, because "x" is
// "destroyed" earlier as it's declared later.
IntHolder holder;
int x = argc;
holder.set(&x);
return 0;
}