From 88cbf3012898e1c42041eefa0ea4bba0d81942e9 Mon Sep 17 00:00:00 2001
From: Catherine <whitequark@whitequark.org>
Date: Thu, 31 Aug 2023 19:19:38 +0000
Subject: [PATCH] lib.wiring: use `is` for type comparison in `Component`.

This avoids running custom `__eq__` implementations, which could
cause issues such as #882.
---
 amaranth/lib/wiring.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/amaranth/lib/wiring.py b/amaranth/lib/wiring.py
index 67e480f..cc1977b 100644
--- a/amaranth/lib/wiring.py
+++ b/amaranth/lib/wiring.py
@@ -760,7 +760,7 @@ class Component(Elaboratable):
             for name, annot in getattr(base, "__annotations__", {}).items():
                 if name.startswith("_"):
                     continue
-                if (annot in (Value, Signal, Const) or
+                if (annot is Value or annot is Signal or annot is Const or
                         (isinstance(annot, type) and issubclass(annot, ValueCastable)) or
                         isinstance(annot, Signature)):
                     if isinstance(annot, type):