From 5fce0dd787f319d229ecbd679781655549a418f2 Mon Sep 17 00:00:00 2001
From: Joshua Nelson <jyn514@gmail.com>
Date: Tue, 29 Dec 2020 00:31:46 -0500
Subject: [PATCH] Add static assertion for the size of ItemKind

---
 src/librustdoc/clean/types.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs
index fc977704e4496..845efe056b3d6 100644
--- a/src/librustdoc/clean/types.rs
+++ b/src/librustdoc/clean/types.rs
@@ -88,6 +88,10 @@ crate struct Item {
     crate def_id: DefId,
 }
 
+// `Item` is used a lot. Make sure it doesn't unintentionally get bigger.
+#[cfg(target_arch = "x86_64")]
+rustc_data_structures::static_assert_size!(Item, 136);
+
 impl fmt::Debug for Item {
     fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
         let def_id: &dyn fmt::Debug = if self.is_fake() { &"**FAKE**" } else { &self.def_id };