Remove the double auto-ref on arrays/strings as receivers #19761
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| ty::ty_str | ty::ty_vec(_, None) => self.pick_autorefrefd_method(step), | ||
| _ => None | ||
| Some(result) => Some(result), | ||
| None => None |
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This entire match is a noop, i.e. the pick_step method should just return self.pick_autorefd_method(step) (maybe in the None branch in the match above it?).
Part of rust-lang#18469 [breaking-change] A receiver will only ever get a single auto-reference. Previously arrays and strings would get two, e.g., [T] would be auto-ref'ed to &&[T]. This is usually apparent when a trait is implemented for `&[T]` and has a method takes self by reference. The usual solution is to implement the trait for `[T]` (the DST form).
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Part of #18469 [breaking-change] A receiver will only ever get a single auto-reference. Previously arrays and strings would get two, e.g., [T] would be auto-ref'ed to &&[T]. This is usually apparent when a trait is implemented for `&[T]` and has a method takes self by reference. The usual solution is to implement the trait for `[T]` (the DST form). r? @nikomatsakis (or anyone else, really)
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Part of #18469
[breaking-change]
A receiver will only ever get a single auto-reference. Previously arrays and strings would get two, e.g., [T] would be auto-ref'ed to &&[T]. This is usually apparent when a trait is implemented for
&[T]and has a method takes self by reference. The usual solution is to implement the trait for[T](the DST form).r? @nikomatsakis (or anyone else, really)