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|
error: a dangling pointer will be produced because the temporary `String` will be dropped
--> $DIR/allow.rs:9:28
|
LL | dbg!(String::new().as_ptr());
| ------------- ^^^^^^ this pointer will immediately be invalid
| |
| this `String` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
|
= note: pointers do not have a lifetime; when calling `as_ptr` the `String` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
= help: you must make sure that the variable you bind the `String` to lives at least as long as the pointer returned by the call to `as_ptr`
= help: in particular, if this pointer is returned from the current function, binding the `String` inside the function will not suffice
= help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
note: the lint level is defined here
--> $DIR/allow.rs:7:12
|
LL | #[deny(dangling_pointers_from_temporaries)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
warning: a dangling pointer will be produced because the temporary `String` will be dropped
--> $DIR/allow.rs:20:28
|
LL | dbg!(String::new().as_ptr());
| ------------- ^^^^^^ this pointer will immediately be invalid
| |
| this `String` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
|
= note: pointers do not have a lifetime; when calling `as_ptr` the `String` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
= help: you must make sure that the variable you bind the `String` to lives at least as long as the pointer returned by the call to `as_ptr`
= help: in particular, if this pointer is returned from the current function, binding the `String` inside the function will not suffice
= help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
note: the lint level is defined here
--> $DIR/allow.rs:18:12
|
LL | #[warn(dangling_pointers_from_temporaries)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 1 previous error; 1 warning emitted
|
