33 lines
837 B
Rust
33 lines
837 B
Rust
// rust-lang/rust#83309: The compiler tries to suggest potential
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// methods that return `&mut` items. However, when it doesn't
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// find such methods, it still tries to add suggestions
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// which then fails an assertion later because there was
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// no suggestions to make.
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fn main() {
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for v in Query.iter_mut() {
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//~^ NOTE this iterator yields `&` references
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*v -= 1;
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//~^ ERROR cannot assign to `*v` which is behind a `&` reference
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//~| NOTE `v` is a `&` reference, so the data it refers to cannot be written
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}
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}
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pub struct Query;
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pub struct QueryIter<'a>(&'a i32);
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impl Query {
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pub fn iter_mut<'a>(&'a mut self) -> QueryIter<'a> {
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todo!();
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}
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}
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impl<'a> Iterator for QueryIter<'a> {
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type Item = &'a i32;
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fn next(&mut self) -> Option<Self::Item> {
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todo!();
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}
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}
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