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rust/tests/ui/mir/drop-elaboration-after-borrowck-error.stderr

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Note the type when unable to drop values in compile time
2022-09-23 14:22:36 +00:00
error[E0493]: destructor of `String` cannot be evaluated at compile-time
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
--> $DIR/drop-elaboration-after-borrowck-error.rs:7:5
|
LL | a[0] = String::new();
| ^^^^
| |
Note the type when unable to drop values in compile time
2022-09-23 14:22:36 +00:00
| the destructor for this type cannot be evaluated in statics
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
| value is dropped here
Note the type when unable to drop values in compile time
2022-09-23 14:22:36 +00:00
error[E0493]: destructor of `[String; 1]` cannot be evaluated at compile-time
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
--> $DIR/drop-elaboration-after-borrowck-error.rs:5:9
|
LL | let a: [String; 1];
Note the type when unable to drop values in compile time
2022-09-23 14:22:36 +00:00
| ^ the destructor for this type cannot be evaluated in statics
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
...
LL | };
| - value is dropped here
Tweak wording and spans
2022-06-21 22:54:17 +00:00
error[E0381]: used binding `a` isn't initialized
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
--> $DIR/drop-elaboration-after-borrowck-error.rs:7:5
|
On partial uninit error point at where we need init When a binding is declared without a value, borrowck verifies that all codepaths have *one* assignment to them to initialize them fully. If there are any cases where a condition can be met that leaves the binding uninitialized or we attempt to initialize a field of an unitialized binding, we emit E0381. We now look at all the statements that initialize the binding, and use them to explore branching code paths that *don't* and point at them. If we find *no* potential places where an assignment to the binding might be missing, we display the spans of all the existing initializers to provide some context.
2022-06-21 18:57:45 +00:00
LL | let a: [String; 1];
Tweak wording and spans
2022-06-21 22:54:17 +00:00
| - binding declared here but left uninitialized
On partial uninit error point at where we need init When a binding is declared without a value, borrowck verifies that all codepaths have *one* assignment to them to initialize them fully. If there are any cases where a condition can be met that leaves the binding uninitialized or we attempt to initialize a field of an unitialized binding, we emit E0381. We now look at all the statements that initialize the binding, and use them to explore branching code paths that *don't* and point at them. If we find *no* potential places where an assignment to the binding might be missing, we display the spans of all the existing initializers to provide some context.
2022-06-21 18:57:45 +00:00
LL |
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
LL | a[0] = String::new();
On partial uninit error point at where we need init When a binding is declared without a value, borrowck verifies that all codepaths have *one* assignment to them to initialize them fully. If there are any cases where a condition can be met that leaves the binding uninitialized or we attempt to initialize a field of an unitialized binding, we emit E0381. We now look at all the statements that initialize the binding, and use them to explore branching code paths that *don't* and point at them. If we find *no* potential places where an assignment to the binding might be missing, we display the spans of all the existing initializers to provide some context.
2022-06-21 18:57:45 +00:00
| ^^^^ `a` used here but it isn't initialized
fix #102087, Suggest Default::default() when binding isn't initialized
2022-09-23 07:28:48 +00:00
|
help: consider assigning a value
|
LL | let a: [String; 1] = todo!();
| +++++++++
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
Note the type when unable to drop values in compile time
2022-09-23 14:22:36 +00:00
error[E0493]: destructor of `T` cannot be evaluated at compile-time
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
--> $DIR/drop-elaboration-after-borrowck-error.rs:18:9
|
LL | self.0[0] = other;
| ^^^^^^^^^
| |
Note the type when unable to drop values in compile time
2022-09-23 14:22:36 +00:00
| the destructor for this type cannot be evaluated in constant functions
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
| value is dropped here
Note the type when unable to drop values in compile time
2022-09-23 14:22:36 +00:00
error[E0493]: destructor of `B<T>` cannot be evaluated at compile-time
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
--> $DIR/drop-elaboration-after-borrowck-error.rs:16:13
|
LL | let _this = self;
Note the type when unable to drop values in compile time
2022-09-23 14:22:36 +00:00
| ^^^^^ the destructor for this type cannot be evaluated in constant functions
Delay remaining `span_bug`s in drop elaboration This follows changes from #67967 and converts remaining `span_bug`s into delayed bugs, since for const items drop elaboration might be executed on a MIR which failed borrowck.
2021-12-22 00:00:00 +00:00
...
LL | }
| - value is dropped here
error[E0382]: use of moved value: `self.0`
--> $DIR/drop-elaboration-after-borrowck-error.rs:18:9
|
LL | pub const fn f(mut self, other: T) -> Self {
| -------- move occurs because `self` has type `B<T>`, which does not implement the `Copy` trait
LL | let _this = self;
| ---- value moved here
LL |
LL | self.0[0] = other;
| ^^^^^^^^^ value used here after move
error: aborting due to 6 previous errors
Some errors have detailed explanations: E0381, E0382, E0493.
For more information about an error, try `rustc --explain E0381`.
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