mirror of https://github.com/rust-lang/rust
111 lines
4.5 KiB
Plaintext
111 lines
4.5 KiB
Plaintext
error[E0106]: missing lifetime specifier
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--> $DIR/lifetime-elision-return-type-requires-explicit-lifetime.rs:2:11
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LL | fn f() -> &isize {
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| ^ expected named lifetime parameter
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= help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
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help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
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LL | fn f() -> &'static isize {
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| +++++++
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help: instead, you are more likely to want to return an owned value
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LL - fn f() -> &isize {
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LL + fn f() -> isize {
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error[E0106]: missing lifetime specifier
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--> $DIR/lifetime-elision-return-type-requires-explicit-lifetime.rs:7:33
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LL | fn g(_x: &isize, _y: &isize) -> &isize {
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| ------ ------ ^ expected named lifetime parameter
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= help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `_x` or `_y`
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help: consider introducing a named lifetime parameter
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LL | fn g<'a>(_x: &'a isize, _y: &'a isize) -> &'a isize {
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| ++++ ++ ++ ++
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error[E0106]: missing lifetime specifier
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--> $DIR/lifetime-elision-return-type-requires-explicit-lifetime.rs:17:19
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LL | fn h(_x: &Foo) -> &isize {
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| ---- ^ expected named lifetime parameter
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= help: this function's return type contains a borrowed value, but the signature does not say which one of `_x`'s 2 lifetimes it is borrowed from
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help: consider introducing a named lifetime parameter
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LL | fn h<'a>(_x: &'a Foo<'a>) -> &'a isize {
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| ++++ ++ ++++ ++
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error[E0106]: missing lifetime specifier
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--> $DIR/lifetime-elision-return-type-requires-explicit-lifetime.rs:21:20
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LL | fn i(_x: isize) -> &isize {
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| ^ expected named lifetime parameter
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= help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
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help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
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LL | fn i(_x: isize) -> &'static isize {
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| +++++++
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help: instead, you are more likely to want to change the argument to be borrowed...
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LL | fn i(_x: &isize) -> &isize {
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| +
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help: ...or alternatively, you might want to return an owned value
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LL - fn i(_x: isize) -> &isize {
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LL + fn i(_x: isize) -> isize {
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error[E0106]: missing lifetime specifier
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--> $DIR/lifetime-elision-return-type-requires-explicit-lifetime.rs:34:24
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LL | fn j(_x: StaticStr) -> &isize {
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| ^ expected named lifetime parameter
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= help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
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help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
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LL | fn j(_x: StaticStr) -> &'static isize {
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| +++++++
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help: instead, you are more likely to want to change the argument to be borrowed...
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LL | fn j(_x: &StaticStr) -> &isize {
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| +
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help: ...or alternatively, you might want to return an owned value
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LL - fn j(_x: StaticStr) -> &isize {
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LL + fn j(_x: StaticStr) -> isize {
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error[E0106]: missing lifetime specifier
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--> $DIR/lifetime-elision-return-type-requires-explicit-lifetime.rs:40:49
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LL | fn k<'a, T: WithLifetime<'a>>(_x: T::Output) -> &isize {
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| ^ expected named lifetime parameter
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= help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
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help: consider using the `'a` lifetime
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LL | fn k<'a, T: WithLifetime<'a>>(_x: T::Output) -> &'a isize {
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| ++
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error[E0106]: missing lifetime specifier
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--> $DIR/lifetime-elision-return-type-requires-explicit-lifetime.rs:45:37
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LL | fn l<'a>(_: &'a str, _: &'a str) -> &str { "" }
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| ------- ------- ^ expected named lifetime parameter
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= help: this function's return type contains a borrowed value with an elided lifetime, but the lifetime cannot be derived from the arguments
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help: consider using the `'a` lifetime
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LL | fn l<'a>(_: &'a str, _: &'a str) -> &'a str { "" }
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| ++
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error: aborting due to 7 previous errors
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For more information about this error, try `rustc --explain E0106`.
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