From 1dfae92eac791f544df425d7fcdf30f169a729c3 Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis@chromium.org>
Date: Mon, 13 Jul 2020 15:20:29 -0400
Subject: [PATCH] LibMarkdown: Reset offset to 0 on each new List line

Found by FuzzMarkdown.
---
 Libraries/LibMarkdown/List.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Libraries/LibMarkdown/List.cpp b/Libraries/LibMarkdown/List.cpp
index 15cd47d80a..52bc2816fe 100644
--- a/Libraries/LibMarkdown/List.cpp
+++ b/Libraries/LibMarkdown/List.cpp
@@ -142,8 +142,10 @@ OwnPtr<List> List::parse(Vector<StringView>::ConstIterator& lines)
         first = false;
         if (!item_builder.is_empty())
             item_builder.append(' ');
+        ASSERT(offset <= line.length());
         item_builder.append(line.substring_view(offset, line.length() - offset));
         ++lines;
+        offset = 0;
     }
 
     if (!flush_item_if_needed() || first)