diff options
Diffstat (limited to 'compiler/rustc_index_macros/src/lib.rs')
| -rw-r--r-- | compiler/rustc_index_macros/src/lib.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_index_macros/src/lib.rs b/compiler/rustc_index_macros/src/lib.rs index ac374a41eb6..4f973c1f010 100644 --- a/compiler/rustc_index_macros/src/lib.rs +++ b/compiler/rustc_index_macros/src/lib.rs @@ -31,6 +31,9 @@ mod newtype; /// - `#[max = 0xFFFF_FFFD]`: specifies the max value, which allows niche /// optimizations. The default max value is 0xFFFF_FF00. /// - `#[gate_rustc_only]`: makes parts of the generated code nightly-only. +/// +/// `SpecOptionPartialEq` is specialized by this macro, so using it requires enabling +/// `#![feature(min_specialization)]` for the crate. #[proc_macro] #[cfg_attr( feature = "nightly", |