From f7f8dc5fd47bcd79e8e46cd321ad0dec9e0ec5cd Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 30 Jan 2020 11:31:48 +0900
Subject: [PATCH] Unnamed groups are not captured when named groups are used

---
 tool/transform_mjit_header.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/transform_mjit_header.rb b/tool/transform_mjit_header.rb
index 5f89446c81..ed837486a7 100644
--- a/tool/transform_mjit_header.rb
+++ b/tool/transform_mjit_header.rb
@@ -105,7 +105,7 @@ module MJITHeader
     su2_regex = /{([^{}]|#{su1_regex})*}/
     su3_regex = /{([^{}]|#{su2_regex})*}/ # 3 nested structs/unions is probably enough
     reduced_decl.gsub!(su3_regex, '') # remove structs/unions in the header
-    id_seq_regex = /\s*(#{ident_regex}(\s+|\s*[*]+\s*))*/
+    id_seq_regex = /\s*(?:#{ident_regex}(?:\s+|\s*[*]+\s*))*/
     # Process function header:
     match = /\A#{id_seq_regex}(?<name>#{ident_regex})\s*\(/.match(reduced_decl)
     return match[:name] if match