From 02df9bbdbdb0a46b86b34d0cf236b599311c0ecb Mon Sep 17 00:00:00 2001
From: Michael Pratt <mpratt@google.com>
Date: Thu, 21 Nov 2024 09:51:44 -0500
Subject: [PATCH] reflect: set swissmap GroupSize

This was missed in CL 627716.

For #54766.

Change-Id: Ib987efa8abe6e89367e2e1b71a33b64ac6b01b1f
Reviewed-on: https://go-review.googlesource.com/c/go/+/630279
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
---
 src/reflect/map_swiss.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/reflect/map_swiss.go b/src/reflect/map_swiss.go
index a278f81e815aa..7098e21291291 100644
--- a/src/reflect/map_swiss.go
+++ b/src/reflect/map_swiss.go
@@ -71,6 +71,7 @@ func MapOf(key, elem Type) Type {
 	mt.Hasher = func(p unsafe.Pointer, seed uintptr) uintptr {
 		return typehash(ktyp, p, seed)
 	}
+	mt.GroupSize = mt.Group.Size()
 	mt.SlotSize = slot.Size()
 	mt.ElemOff = slot.Field(1).Offset
 	mt.Flags = 0