warning[E0713]: borrow may still be in use when destructor runs
- --> $DIR/issue-45696-scribble-on-boxed-borrow.rs:53:5
+ --> $DIR/issue-45696-scribble-on-boxed-borrow.rs:52:5
|
LL | fn scribbled<'a>(s: Scribble<'a>) -> &'a mut u32 {
| -- lifetime `'a` defined here
|
= warning: this error has been downgraded to a warning for backwards compatibility with previous releases
= warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
+ = note: for more information, try `rustc --explain E0729`
warning[E0713]: borrow may still be in use when destructor runs
- --> $DIR/issue-45696-scribble-on-boxed-borrow.rs:64:5
+ --> $DIR/issue-45696-scribble-on-boxed-borrow.rs:63:5
|
LL | fn boxed_scribbled<'a>(s: Box<Scribble<'a>>) -> &'a mut u32 {
| -- lifetime `'a` defined here
|
= warning: this error has been downgraded to a warning for backwards compatibility with previous releases
= warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
+ = note: for more information, try `rustc --explain E0729`
warning[E0713]: borrow may still be in use when destructor runs
- --> $DIR/issue-45696-scribble-on-boxed-borrow.rs:75:5
+ --> $DIR/issue-45696-scribble-on-boxed-borrow.rs:74:5
|
LL | fn boxed_boxed_scribbled<'a>(s: Box<Box<Scribble<'a>>>) -> &'a mut u32 {
| -- lifetime `'a` defined here
|
= warning: this error has been downgraded to a warning for backwards compatibility with previous releases
= warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
+ = note: for more information, try `rustc --explain E0729`
error: compilation successful
- --> $DIR/issue-45696-scribble-on-boxed-borrow.rs:82:1
+ --> $DIR/issue-45696-scribble-on-boxed-borrow.rs:81:1
|
LL | / fn main() {
-LL | |
LL | | let mut x = 1;
LL | | {
+LL | | let mut long_lived = Scribble(&mut x);
... |
LL | | *boxed_boxed_scribbled(Box::new(Box::new(Scribble(&mut x)))) += 10;
LL | | }