Support frozen abi for Cow with workaround

solana-labs · Jan 11, 2023 · 28a0c38 · 28a0c38
1 parent 50269f6
commit 28a0c38
Showing 1 changed file with 6 additions and 5 deletions.
diff --git a/frozen-abi/src/abi_example.rs b/frozen-abi/src/abi_example.rs
@@ -390,11 +390,12 @@ impl<T: std::cmp::Ord + AbiExample, S: AbiExample> AbiExample for BTreeMap<T, S>
     }
 }
 
-// impl<'a, T: AbiExample> AbiExample for std::borrow::Cow<'a, T> {
-//     fn example() -> Self {
-//         Self::Owned(T::example())
-//     }
-// }
+// + Clone is needed to work around this rustc bug: https://github.com/rust-lang/rust/issues/106710
+impl<T: AbiExample + Clone> AbiExample for std::borrow::Cow<'_, T> {
+    fn example() -> Self {
+        Self::Owned(T::example())
+    }
+}
 
 impl<T: AbiExample> AbiExample for Vec<T> {
     fn example() -> Self {