From a107072a19e778bf5e7a5eecac62846f1ca4e4c6 Mon Sep 17 00:00:00 2001
From: Cory Benfield <lukasa@apple.com>
Date: Mon, 23 Oct 2023 19:00:13 +0100
Subject: [PATCH] Mark retroactive conformances appropriately. (#2569)

Motivation:

In nightly Swift, we now need to mark retroactive conformances when
they are intentional. These conformances are safe for us, so we can
safely suppress the warnings.

Modifications:

- Mark NIOFoundationCompat retroactive conformances.

Result:

Nightly builds work again
---
 .../NIOFoundationCompat/ByteBuffer-foundation.swift  | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/Sources/NIOFoundationCompat/ByteBuffer-foundation.swift b/Sources/NIOFoundationCompat/ByteBuffer-foundation.swift
index 271707ad83..fd6362bf7f 100644
--- a/Sources/NIOFoundationCompat/ByteBuffer-foundation.swift
+++ b/Sources/NIOFoundationCompat/ByteBuffer-foundation.swift
@@ -375,9 +375,17 @@ extension ByteBufferAllocator {
 }
 
 // MARK: - Conformances
+#if compiler(>=5.11)
+extension ByteBufferView: @retroactive ContiguousBytes {}
+extension ByteBufferView: @retroactive DataProtocol {}
+extension ByteBufferView: @retroactive MutableDataProtocol {}
+#else
 extension ByteBufferView: ContiguousBytes {}
+extension ByteBufferView: DataProtocol {}
+extension ByteBufferView: MutableDataProtocol {}
+#endif
 
-extension ByteBufferView: DataProtocol {
+extension ByteBufferView {
     public typealias Regions = CollectionOfOne<ByteBufferView>
 
     public var regions: CollectionOfOne<ByteBufferView> {
@@ -385,8 +393,6 @@ extension ByteBufferView: DataProtocol {
     }
 }
 
-extension ByteBufferView: MutableDataProtocol {}
-
 // MARK: - Data
 extension Data {