From 619ed1540a7704afd08ca91b3a7ddece94ba9720 Mon Sep 17 00:00:00 2001
From: blyxyas <blyxyas@gmail.com>
Date: Mon, 21 Apr 2025 17:36:36 +0200
Subject: [PATCH] Document why CodeStats::type_sizes is public

---
 compiler/rustc_session/src/code_stats.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/compiler/rustc_session/src/code_stats.rs b/compiler/rustc_session/src/code_stats.rs
index 6b18d450e9e5e..80603b4a1567f 100644
--- a/compiler/rustc_session/src/code_stats.rs
+++ b/compiler/rustc_session/src/code_stats.rs
@@ -72,6 +72,8 @@ pub struct TypeSizeInfo {
 
 #[derive(Default)]
 pub struct CodeStats {
+    /// The hash set that actually holds all the type size information.
+    /// The field is public for use in external tools. See #139876.
     pub type_sizes: Lock<FxHashSet<TypeSizeInfo>>,
 }