Function rustc_mir_build::thir::pattern::check_match::adt_defined_here

fn adt_defined_here<'p, 'tcx>(
    cx: &MatchCheckCtxt<'p, 'tcx>, 
    err: &mut DiagnosticBuilder<'_>, 
    ty: Ty<'tcx>, 
    witnesses: &[DeconstructedPat<'p, 'tcx>]
)

Point at the definition of non-covered enum variants.