rustc_mir_build::thir::pattern::check_match

Function report_adt_defined_here

Source 
fn report_adt_defined_here<'tcx>(
    tcx: TyCtxt<'tcx>,
    ty: Ty<'tcx>,
    witnesses: &[WitnessPat<'_, 'tcx>],
    point_at_non_local_ty: bool,
) -> Option<AdtDefinedHere<'tcx>>