{"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"#[cfg(not(feature"}]}
#[cfg(not(feature = "rustc"))]
use crate::{MatchArm, PatCx, PrivateUninhabitedField, checks};
pub fn ensure_sufficient_stack<R>(f: impl FnOnce() -> R) -> R {