{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"//"}]}
        // pointless, since that would require allocating more memory than these short strings.
        // This can fail if rustc runs out of memory right here. Trying to emit an error would be
        let file_ptr = ecx.allocate_bytes_dedup(filename_with_nul.as_bytes()).unwrap();