rust/tests/ui/cycle-trait/cycle-trait-supertrait-indirect.rs

// Test a supertrait cycle where the first trait we find (`A`) is not
// a direct participant in the cycle.

trait A: B {
}

trait B: C {
    //~^ ERROR cycle detected
}

trait C: B { }

fn main() { }
Comprehence cycle detection in `collect`. In some cases, the cycles we report are not necessary cycles, but we'll work on refactoring them over time. This overlaps with the cycle detection that astconv already does: I left that code in because it gives a more targeted error message, though perhaps less helpful in that it doesn't give the full details of the cycle. 2015-02-17 22:11:01 +00:00			// Test a supertrait cycle where the first trait we find (`A`) is not
			`// a direct participant in the cycle.`

			`trait A: B {`
			`}`

Separate supertrait collection from processing a `TraitDef`. This allows us to construct trait-references and do other things without forcing a full evaluation of the supertraits. One downside of this scheme is that we must invoke `ensure_super_predicates` before using any construct that might require knowing about the super-predicates. 2015-02-24 14:24:42 +00:00			`trait B: C {`
Update tests 2018-04-15 21:21:00 +00:00			`//~^ ERROR cycle detected`
Separate supertrait collection from processing a `TraitDef`. This allows us to construct trait-references and do other things without forcing a full evaluation of the supertraits. One downside of this scheme is that we must invoke `ensure_super_predicates` before using any construct that might require knowing about the super-predicates. 2015-02-24 14:24:42 +00:00			`}`
Comprehence cycle detection in `collect`. In some cases, the cycles we report are not necessary cycles, but we'll work on refactoring them over time. This overlaps with the cycle detection that astconv already does: I left that code in because it gives a more targeted error message, though perhaps less helpful in that it doesn't give the full details of the cycle. 2015-02-17 22:11:01 +00:00
			`trait C: B { }`

			`fn main() { }`