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rust/tests/ui/liveness/liveness-upvars.stderr

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liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
warning: value assigned to `last` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:10:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | last = Some(s);
| ^^^^
|
bless ui tests
2022-09-18 15:55:36 +00:00
= help: maybe it is overwritten before being read?
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
note: the lint level is defined here
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:4:9
liveness: Warn about unused captured variables
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|
LL | #![warn(unused)]
| ^^^^^^
= note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
warning: unused variable: `last`
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:10:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | last = Some(s);
| ^^^^
|
= help: did you mean to capture by reference instead?
bless ui tests
2022-09-18 15:55:36 +00:00
= note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
warning: unused variable: `sum`
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:22:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | sum += x;
| ^^^
|
= help: did you mean to capture by reference instead?
warning: value captured by `c` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:32:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | c = 1;
| ^
|
= help: did you mean to capture by reference instead?
warning: value captured by `c` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:36:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | c = 1;
| ^
|
= help: did you mean to capture by reference instead?
warning: unused variable: `c`
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:42:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | c += 1;
| ^
|
= help: did you mean to capture by reference instead?
warning: value assigned to `c` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:45:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | c += 1;
| ^
|
= help: maybe it is overwritten before being read?
warning: unused variable: `c`
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:45:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | c += 1;
| ^
|
= help: did you mean to capture by reference instead?
warning: value assigned to `c` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:58:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | c += 1;
| ^
|
= help: maybe it is overwritten before being read?
warning: value assigned to `c` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:64:9
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | c += 1;
| ^
|
= help: maybe it is overwritten before being read?
warning: value assigned to `d` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:73:13
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | d = Some("d1");
| ^
|
= help: maybe it is overwritten before being read?
warning: value assigned to `e` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:77:13
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | e = Some("e1");
| ^
|
= help: maybe it is overwritten before being read?
warning: value assigned to `e` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:79:13
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | e = Some("e2");
| ^
|
= help: maybe it is overwritten before being read?
warning: unused variable: `e`
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:77:13
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | e = Some("e1");
| ^
|
= help: did you mean to capture by reference instead?
warning: value assigned to `v` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:87:13
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | v = T::default();
| ^
|
= help: maybe it is overwritten before being read?
warning: value assigned to `z` is never read
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:99:17
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | z = T::default();
| ^
|
= help: maybe it is overwritten before being read?
warning: unused variable: `z`
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
--> $DIR/liveness-upvars.rs:99:17
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
|
LL | z = T::default();
| ^
|
= help: did you mean to capture by reference instead?
Improve liveness analysis for generators Liveness analysis for generators assumes that execution always continues normally after a yield point, not accounting for the fact that generator could be dropped before completion. If generators captures any variables by reference, those variables could be used within a generator, or when the generator completes, but also after each yield point in the case the generator is dropped. Account for the case when generator is dropped after yielding, but before running to the completion. This effectively considers all variables captured by reference to be used after a yield point.
2021-04-19 00:00:00 +00:00
warning: value assigned to `state` is never read
--> $DIR/liveness-upvars.rs:125:9
|
LL | state = 4;
| ^^^^^
|
= help: maybe it is overwritten before being read?
warning: value assigned to `state` is never read
--> $DIR/liveness-upvars.rs:128:9
|
LL | state = 5;
| ^^^^^
|
= help: maybe it is overwritten before being read?
warning: unused variable: `state`
--> $DIR/liveness-upvars.rs:125:9
|
LL | state = 4;
| ^^^^^
|
= help: did you mean to capture by reference instead?
warning: value assigned to `s` is never read
--> $DIR/liveness-upvars.rs:137:9
|
LL | s = 1;
| ^
|
= help: maybe it is overwritten before being read?
warning: value assigned to `s` is never read
--> $DIR/liveness-upvars.rs:139:9
|
LL | s = yield ();
| ^
|
= help: maybe it is overwritten before being read?
warning: 22 warnings emitted
liveness: Warn about unused captured variables
2020-05-22 00:00:00 +00:00
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