1 error[E0515]: cannot return reference to temporary value
2 --> $DIR/regions-creating-enums.rs:23:16
4 LL | return &Ast::Num((*f)(x));
7 | |temporary value created here
8 | returns a reference to data owned by the current function
10 error[E0515]: cannot return reference to temporary value
11 --> $DIR/regions-creating-enums.rs:28:16
13 LL | return &Ast::Add(m_x, m_y);
16 | |temporary value created here
17 | returns a reference to data owned by the current function
19 error: aborting due to 2 previous errors
21 For more information about this error, try `rustc --explain E0515`.