From 5b88af5109405a51b0c6f8237016707604109ca7 Mon Sep 17 00:00:00 2001
From: Grégoire Duchêne <gduchene@awhk.org>
Date: Sat, 3 Dec 2022 11:53:48 +0000
Subject: Add NoCopy to flag types as not to be copied

See https://github.com/golang/go/issues/8005#issuecomment-190753527 for
more details.
---
 util.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'util.go')

diff --git a/util.go b/util.go
index d6f1985..daf2817 100644
--- a/util.go
+++ b/util.go
@@ -10,3 +10,14 @@ func Must[T any](val T, err error) T {
 	}
 	return val
 }
+
+// NoCopy flags a type that embeds it as not to be copied. Go does not
+// prevent values from being copied, but ‘go vet’ will pick it up and
+// signal it, which can then be caught by many CI/CD pipelines.
+//
+// See https://github.com/golang/go/issues/8005#issuecomment-190753527
+// for more details.
+type NoCopy struct{}
+
+func (*NoCopy) Lock()   {}
+func (*NoCopy) Unlock() {}
-- 
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