diff options
| -rw-r--r-- | src/librustc/front/feature_gate.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/librustc/front/feature_gate.rs b/src/librustc/front/feature_gate.rs index 0f8307b87e5..000dea12b07 100644 --- a/src/librustc/front/feature_gate.rs +++ b/src/librustc/front/feature_gate.rs @@ -35,6 +35,7 @@ static KNOWN_FEATURES: &'static [(&'static str, Status)] = &[ ("struct_variant", Active), ("once_fns", Active), ("asm", Active), + ("managed_boxes", Active), // These are used to test this portion of the compiler, they don't actually // mean anything @@ -137,6 +138,15 @@ impl Visitor<()> for Context { experimental and likely to be removed"); }, + // NOTE: enable after snapshot + ast::ty_box(_) if false => { + self.gate_feature("managed_boxes", t.span, "The managed box syntax may be replaced \ + by a library type, and a garbage \ + collector is not yet implemented. \ + Consider using the `std::rc` module \ + as it performs much better as a \ + reference counting implementation."); + } _ => {} } |