emit_unstable_in_stable_exposed_error

rustc_const_eval::check_consts::check

Function emit_unstable_in_stable_exposed_error 

Source 
fn emit_unstable_in_stable_exposed_error(
    ccx: &ConstCx<'_, '_>,
    span: Span,
    gate: Symbol,
    is_function_call: bool,
) -> ErrorGuaranteed