error[E0080]: memory access failed: ALLOC0 has been freed, so this pointer is dangling
  --> $DIR/dealloc_intrinsic_duplicate.rs:9:5
   |
LL |     intrinsics::const_deallocate(ptr, 4, 4);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `_X` failed here

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0080`.