From b5301ca597879c37fc0da38c26f2a39cc2f44214 Mon Sep 17 00:00:00 2001
From: Hakan Ensari <hakanensari@gmail.com>
Date: Thu, 19 Mar 2026 21:42:13 +0000
Subject: [PATCH] Fix RBS syntax error

The newly-released RBS 4.0 rejects void in union types at the parser
level. The (Integer | void) return type on Readable#rewind now causes a
hard parse error.

Change to `void`, consistent with CompositeIO#rewind and the YARD
@return annotation.
---
 sig/http.rbs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sig/http.rbs b/sig/http.rbs
index 1cd30e70..00286ad5 100644
--- a/sig/http.rbs
+++ b/sig/http.rbs
@@ -1272,7 +1272,7 @@ module HTTP
       def size: () -> Integer
 
       # Rewinds the IO to the beginning
-      def rewind: () -> (Integer | void)
+      def rewind: () -> void
     end
 
     class Part