https://git.ruby-lang.org/ruby.git/commit/?id=73bcd26354

From 73bcd263546750eb4cc6a4533104d6b205cd9ad0 Mon Sep 17 00:00:00 2001
From: Alan Wu <XrXr@u...>
Date: Tue, 16 Feb 2021 16:36:52 -0500
Subject: Fix build on MSVC

Use compiler protable way of delcaring function as maybe unused.
---
 ujit_codegen.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ujit_codegen.c b/ujit_codegen.c
index 26aa4ffcf0..6ab1ee1c9b 100644
--- a/ujit_codegen.c
+++ b/ujit_codegen.c
@@ -27,7 +27,8 @@ static codeblock_t outline_block; https://github.com/ruby/ruby/blob/trunk/ujit_codegen.c#L27
 codeblock_t* ocb = NULL;
 
 // Print the current source location for debugging purposes
-static void __attribute__((unused))
+RBIMPL_ATTR_MAYBE_UNUSED()
+static void
 jit_print_loc(jitstate_t* jit, const char* msg)
 {
     char *ptr;
-- 
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