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

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

Point at the definition of non-covered enum variants.