Add safe_suggestion attribute

1 files changed, 9 insertions, 0 deletions

diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index 77c53542dcb..dbb31b0e56c 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -304,6 +304,7 @@ declare_features! (
     // Allows using `Self` and associated types in struct expressions and patterns.
     (active, more_struct_aliases, "1.14.0", Some(37544)),
 
+
     // Allows #[link(..., cfg(..))]
     (active, link_cfg, "1.14.0", Some(37406)),
 
@@ -314,6 +315,9 @@ declare_features! (
 
     // Allows #[target_feature(...)]
     (active, target_feature, "1.15.0", None),
+
+    // Allow safe suggestions for potential type conversions.
+    (active, safe_suggestion, "1.0.0", Some(37384)),
 );
 
 declare_features! (
@@ -648,6 +652,11 @@ pub const BUILTIN_ATTRIBUTES: &'static [(&'static str, AttributeType, AttributeG
                                                    "internal implementation detail",
                                                    cfg_fn!(rustc_attrs))),
 
+    ("safe_suggestion", Whitelisted, Gated("safe_suggestion",
+                                           "the `#[safe_suggestion]` attribute \
+                                            is an experimental feature",
+                                           cfg_fn!(safe_suggestion))),
+
     // FIXME: #14408 whitelist docs since rustdoc looks at them
     ("doc", Whitelisted, Ungated),