From 7c0c713a102ee86ee32af115acba63a5c3b3a657 Mon Sep 17 00:00:00 2001
From: Jonas Schievink <jonasschievink@gmail.com>
Date: Mon, 5 Apr 2021 03:50:10 +0200
Subject: Intern `GenericParams`

Also share the same instance between `ItemTree` and `generic_params`
query.
---
 lib/arena/src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/arena/src')

diff --git a/lib/arena/src/lib.rs b/lib/arena/src/lib.rs
index bce15c867..1720537cb 100644
--- a/lib/arena/src/lib.rs
+++ b/lib/arena/src/lib.rs
@@ -90,7 +90,7 @@ impl<T> Idx<T> {
 }
 
 /// Yet another index-based arena.
-#[derive(Clone, PartialEq, Eq)]
+#[derive(Clone, PartialEq, Eq, Hash)]
 pub struct Arena<T> {
     data: Vec<T>,
 }
-- 
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