Function rustc_save_analysis::sig::make_assoc_const_signature

pub(in sig) fn make_assoc_const_signature(
    id: HirId, 
    ident: Symbol, 
    ty: &Ty<'_>, 
    default: Option<&Expr<'_>>, 
    scx: &SaveContext<'_>
) -> Result<Signature, &'static str>