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5fae665924
```
error[E0283]: type annotations needed
--> $DIR/into-inference-needs-type.rs:12:10
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LL | .into()?;
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= note: cannot satisfy `_: From<...>`
= note: required for `FilterMap<...>` to implement `Into<_>`
help: try using a fully qualified path to specify the expected types
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LL ~ let list = <FilterMap<Map<std::slice::Iter<'_, &str>, _>, _> as Into<T>>::into(vec
LL | .iter()
LL | .map(|s| s.strip_prefix("t"))
LL ~ .filter_map(Option::Some))?;
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```
Fix #122569.
23 lines
402 B
Rust
23 lines
402 B
Rust
//@ check-fail
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//@ known-bug: #103705
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// The output of this currently suggests writing a closure in the qualified path.
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trait MyTrait<T> {
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fn lol<F:FnOnce()>(&self, f:F) -> u16;
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}
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struct Qqq;
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impl MyTrait<u32> for Qqq{
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fn lol<F:FnOnce()>(&self, _f:F) -> u16 { 5 }
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}
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impl MyTrait<u64> for Qqq{
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fn lol<F:FnOnce()>(&self, _f:F) -> u16 { 6 }
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}
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fn main() {
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let q = Qqq;
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q.lol(||());
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}
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