mirror of https://github.com/rust-lang/rust
28 lines
1005 B
Plaintext
28 lines
1005 B
Plaintext
warning: function cannot return without recursing
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--> $DIR/issue-87450.rs:5:1
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LL | fn foo() -> impl Fn() {
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| ^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
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...
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LL | wrap(wrap(wrap(wrap(wrap(wrap(wrap(foo())))))))
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| ----- recursive call site
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= help: a `loop` may express intention better if this is on purpose
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= note: `#[warn(unconditional_recursion)]` on by default
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error[E0720]: cannot resolve opaque type
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--> $DIR/issue-87450.rs:5:13
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LL | fn foo() -> impl Fn() {
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| ^^^^^^^^^ recursive opaque type
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...
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LL | wrap(wrap(wrap(wrap(wrap(wrap(wrap(foo())))))))
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| ----------------------------------------------- returning here with type `impl Fn()`
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...
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LL | fn wrap(f: impl Fn()) -> impl Fn() {
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| --------- returning this opaque type `impl Fn()`
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error: aborting due to 1 previous error; 1 warning emitted
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For more information about this error, try `rustc --explain E0720`.
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