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Make impl-trait-ref associated types work in methods

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This commit is contained in:
Ariel Ben-Yehuda 2015-06-14 02:27:18 +03:00 • committed by Ariel Ben-Yehuda
parent 1af72660a7
commit 6cdccc5a78
4 changed files with 86 additions and 29 deletions
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4
src/librustc/middle/traits/project.rs
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@ -389,15 +389,19 @@ fn opt_normalize_projection_type<'a,'b,'tcx>(
}
}
Ok(ProjectedTy::NoProgress(projected_ty)) => {
debug!("normalize_projection_type: projected_ty={} no progress",
projected_ty.repr(selcx.tcx()));
Some(Normalized {
value: projected_ty,
obligations: vec!()
})
}
Err(ProjectionTyError::TooManyCandidates) => {
debug!("normalize_projection_type: too many candidates");
None
}
Err(ProjectionTyError::TraitSelectionError(_)) => {
debug!("normalize_projection_type: ERROR");
// if we got an error processing the `T as Trait` part,
// just return `ty::err` but add the obligation `T :
// Trait`, which when processed will cause the error to be