Allow refrence cycles in constants

language design
1

Constants cannot be dropped or modified and therefore allowing refrence cycles should be fine, but code like this fails to compile with the error "cycle used when processing main::CONST". If there is a problem with this proposal I think the error message and error index should be clarified to explain it better.

struct Struct(&'static Self);
const CONST: Struct = Struct(&CONST);
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2

Think of const values more like a kind of macro that gets inlined wherever the name is mentioned -- then it makes more sense that a cycle like this is not permitted. A static will work for this case.

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3

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