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32 lines
1.6 KiB
Plaintext
32 lines
1.6 KiB
Plaintext
warning: function cannot return without recursing
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--> $DIR/issue-91949-hangs-on-recursion.rs:23:1
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LL | / fn recurse<T>(elements: T) -> Vec<char>
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LL | | where
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LL | | T: Iterator<Item = ()>,
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| |___________________________^ cannot return without recursing
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LL | {
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LL | recurse(IteratorOfWrapped(elements).map(|t| t.0))
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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[E0275]: overflow evaluating the requirement `<std::iter::Empty<()> as Iterator>::Item == ()`
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= help: consider increasing the recursion limit by adding a `#![recursion_limit = "512"]` attribute to your crate (`issue_91949_hangs_on_recursion`)
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note: required for `IteratorOfWrapped<(), std::iter::Empty<()>>` to implement `Iterator`
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--> $DIR/issue-91949-hangs-on-recursion.rs:16:32
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LL | impl<T, I: Iterator<Item = T>> Iterator for IteratorOfWrapped<T, I> {
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| -------- ^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| unsatisfied trait bound introduced here
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= note: 256 redundant requirements hidden
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= note: required for `IteratorOfWrapped<(), Map<IteratorOfWrapped<(), Map<IteratorOfWrapped<(), Map<..., ...>>, ...>>, ...>>` to implement `Iterator`
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= note: the full type name has been written to '$TEST_BUILD_DIR/traits/issue-91949-hangs-on-recursion/issue-91949-hangs-on-recursion.long-type-hash.txt'
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error: aborting due to previous error; 1 warning emitted
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For more information about this error, try `rustc --explain E0275`.
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