From 8e3fe80c062a4b9ca3e73401b54c7dc885896214 Mon Sep 17 00:00:00 2001
From: Ali Mohammad Pur <ali.mpfard@gmail.com>
Date: Tue, 14 Sep 2021 19:44:38 +0430
Subject: [PATCH] LibRegex: Avoid using GenericLexer::consume() when at eof

Fixes #10027.
---
 Userland/Libraries/LibRegex/RegexParser.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibRegex/RegexParser.cpp b/Userland/Libraries/LibRegex/RegexParser.cpp
index 8fa9dd9b18..55f04c1ca1 100644
--- a/Userland/Libraries/LibRegex/RegexParser.cpp
+++ b/Userland/Libraries/LibRegex/RegexParser.cpp
@@ -2229,6 +2229,7 @@ size_t ECMA262Parser::ensure_total_number_of_capturing_parenthesis()
             }
             break;
         case '(':
+            lexer.consume();
             if (lexer.consume_specific('?')) {
                 // non-capturing group '(?:', lookaround '(?<='/'(?<!', or named capture '(?<'
                 if (!lexer.consume_specific('<'))
@@ -2242,8 +2243,10 @@ size_t ECMA262Parser::ensure_total_number_of_capturing_parenthesis()
                 ++count;
             }
             break;
+        default:
+            lexer.consume();
+            break;
         }
-        lexer.consume();
     }
 
     m_total_number_of_capturing_parenthesis = count;