From 1676ee451e455bdeca558790d5b660a9da74f962 Mon Sep 17 00:00:00 2001
From: "Shane F. Carr" <shane@unicode.org>
Date: Thu, 7 Mar 2024 15:19:44 +0100
Subject: [PATCH 1/2] Add PhantomData databake impl

---
 utils/databake/src/primitives.rs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/utils/databake/src/primitives.rs b/utils/databake/src/primitives.rs
index 37a8daeaa16..2373846046b 100644
--- a/utils/databake/src/primitives.rs
+++ b/utils/databake/src/primitives.rs
@@ -2,6 +2,8 @@
 // called LICENSE at the top level of the ICU4X source tree
 // (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
 
+use std::marker::PhantomData;
+
 use super::*;
 
 macro_rules! literal {
@@ -255,3 +257,19 @@ fn tuple() {
         const: (0u8, 0i8)
     );
 }
+
+impl<T> Bake for PhantomData<T> {
+    fn bake(&self, _ctx: &CrateEnv) -> TokenStream {
+        quote! {
+            ::core::marker::PhantomData
+        }
+    }
+}
+
+#[test]
+fn phantom_data() {
+    test_bake!(
+        PhantomData<usize>,
+        const: ::core::marker::PhantomData
+    );
+}

From ae713891c1f756056fd6744e208ced9670c3b50f Mon Sep 17 00:00:00 2001
From: "Shane F. Carr" <shane@unicode.org>
Date: Thu, 7 Mar 2024 15:20:51 +0100
Subject: [PATCH 2/2] Changelog

---
 CHANGELOG.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 53e113224a1..3a48bd3ca56 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -42,6 +42,8 @@
         - Add Keviyah/Four Gates based optimized calculations module for the Hebrew calendar. (https://github.com/unicode-org/icu4x/pull/4504)
         - Expose `Hebrew` as a unit struct, add `Date::try_new_hebrew_date()`, `DateTime::try_new_hebrew_datetime()`. (https://github.com/unicode-org/icu4x/pulls/4532)
         - Deprecate `Hebrew::new_always_precomputing()`, `Date::try_new_hebrew_date_with_calendar()`, `DateTime::try_new_hebrew_datetime_with_calendar()`. The new implementation of the Hebrew calendar is faster and we do not need APIs for precomputation. (https://github.com/unicode-org/icu4x/pulls/4532)
+    - `databake`
+        - Add `impl Bake for PhantomData<T>` (https://github.com/unicode-org/icu4x/pull/4663)
     - `litemap`
         - Add `impl IntoIterator for LiteMap` by splitting `StoreIterableMut` trait (https://github.com/unicode-org/icu4x/pull/4359)
     - `yoke`