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af19a50a26
Better errors when a Copy impl on a Struct is not self-consistent As discovered in a Zulip thread with `@nnethercote` and `@Mark-Simulacrum,` it's not immediately obvious why a field on an ADT doesn't implement `Copy`. This PR attempts to give slightly more detailed information by spinning up a fulfillment context to try to dig down and discover transitive fulfillment errors that cause `is_copy_modulo_regions` to fail on a ADT field. The error message still kinda sucks, but should only show up in the case that an existing error message was totally missing... so I think it's a good compromise for now? |
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| .. | ||
| traits | ||
| autoderef.rs | ||
| infer.rs | ||
| lib.rs | ||
| opaque_types.rs | ||