diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/librustc_driver/lib.rs | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/librustc_driver/lib.rs b/src/librustc_driver/lib.rs index 0a3ebcb4ca1..da565856a9f 100644 --- a/src/librustc_driver/lib.rs +++ b/src/librustc_driver/lib.rs @@ -94,7 +94,7 @@ use syntax::errors; use syntax::errors::emitter::Emitter; use syntax::diagnostics; use syntax::parse::token; -use syntax::feature_gate::UnstableFeatures; +use syntax::feature_gate::{GatedCfg, UnstableFeatures}; #[cfg(test)] pub mod test; @@ -567,7 +567,16 @@ impl RustcDefaultCalls { PrintRequest::Cfg => { let mut cfg = config::build_configuration(&sess); target_features::add_configuration(&mut cfg, &sess); + + let allow_unstable_cfg = match get_unstable_features_setting() { + UnstableFeatures::Disallow => false, + _ => true, + }; + for cfg in cfg { + if !allow_unstable_cfg && GatedCfg::gate(&*cfg).is_some() { + continue; + } match cfg.node { ast::MetaItemKind::Word(ref word) => println!("{}", word), ast::MetaItemKind::NameValue(ref name, ref value) => { |