{"ast_node_type":"variable","tokens":[{"end":46,"kind":"keyword","start":0,"text":"if"}]}
    if let ExternAbi::Cdecl { unwind } = abi {
fn add_abi_diag_help<T: EmissionGuarantee>(abi: ExternAbi, diag: &mut Diag<'_, T>) {
        let c_abi = ExternAbi::C { unwind };