From 7d6635b4724e59086695239e771cdbc4543ec688 Mon Sep 17 00:00:00 2001
From: David Anson <david@dlaa.me>
Date: Sun, 6 Jan 2019 22:07:10 -0800
Subject: [PATCH] Fix possible null-dereference if RegExp does not match in
 MD038.

---
 lib/md038.js                      | 2 +-
 test/backslashes-and-backticks.md | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 test/backslashes-and-backticks.md

diff --git a/lib/md038.js b/lib/md038.js
index 25314197..3019a600 100644
--- a/lib/md038.js
+++ b/lib/md038.js
@@ -19,7 +19,7 @@ module.exports = {
           inlineCodeSpansRe.lastIndex = 0;
         }
         const match = inlineCodeSpansRe.exec(parent.content);
-        const content = match[3];
+        const content = (match || [])[3];
         const leftError = /^\s([^`]|$)/.test(content);
         const rightError = /[^`]\s$/.test(content);
         if (leftError || rightError) {
diff --git a/test/backslashes-and-backticks.md b/test/backslashes-and-backticks.md
new file mode 100644
index 00000000..6a213d1a
--- /dev/null
+++ b/test/backslashes-and-backticks.md
@@ -0,0 +1,4 @@
+# Heading
+
+\\`\\
+\\`\\