Function rustc::ty::wf::object_region_bounds

pub fn object_region_bounds<'a, 'gcx, 'tcx>(tcx: TyCtxt<'a, 'gcx, 'tcx>, principal: &PolyTraitRef<'tcx>, others: BuiltinBounds) -> Vec<Region>

Unstable (rustc_private)

Given an object type like SomeTrait+Send, computes the lifetime bounds that must hold on the elided self type. These are derived from the declarations of SomeTrait, Send, and friends -- if they declare trait SomeTrait : 'static, for example, then 'static would appear in the list. The hard work is done by ty::required_region_bounds, see that for more information.