use run_make_support::{fs as rfs, rustdoc}; use std::iter; use std::path::Path; fn generate_a_lot_of_cfgs(path: &Path) { let content = iter::repeat("--cfg=a\n").take(100_000).collect::(); rfs::write(path, content.as_bytes()); } fn main() { let arg_file = Path::new("args"); generate_a_lot_of_cfgs(&arg_file); rustdoc().input("foo.rs").arg_file(&arg_file).arg("--test").run(); }