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-rw-r--r--compiler/rustc_error_codes/src/error_codes/E0732.md4
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0732.md b/compiler/rustc_error_codes/src/error_codes/E0732.md
index 9536fdbf0df..7347e6654c5 100644
--- a/compiler/rustc_error_codes/src/error_codes/E0732.md
+++ b/compiler/rustc_error_codes/src/error_codes/E0732.md
@@ -3,6 +3,8 @@ An `enum` with a discriminant must specify a `#[repr(inttype)]`.
 Erroneous code example:
 
 ```compile_fail,E0732
+#![feature(arbitrary_enum_discriminant)]
+
 enum Enum { // error!
     Unit = 1,
     Tuple() = 2,
@@ -18,6 +20,8 @@ is a well-defined way to extract a variant's discriminant from a value;
 for instance:
 
 ```
+#![feature(arbitrary_enum_discriminant)]
+
 #[repr(u8)]
 enum Enum {
     Unit = 3,