Function rustc_hir_analysis::check::wfcheck::test_region_obligations   
source ยท fn test_region_obligations<'tcx>(
    tcx: TyCtxt<'tcx>,
    id: LocalDefId,
    param_env: ParamEnv<'tcx>,
    wf_tys: &FxIndexSet<Ty<'tcx>>,
    add_constraints: impl FnOnce(&InferCtxt<'tcx>),
) -> boolExpand description
Given a known param_env and a set of well formed types, set up an
InferCtxt, call the passed function (to e.g. set up region constraints
to be tested), then resolve region and return errors