From ad8284bac680c191f66c2b5b053ba0e73c45072d Mon Sep 17 00:00:00 2001
From: Tucker Polomik <tuckerpo@buffalo.edu>
Date: Sun, 4 Oct 2020 15:35:11 -0700
Subject: [PATCH] AK: check fractional string has_value() in JsonParser

Resolves #3670
---
 AK/JsonParser.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/AK/JsonParser.cpp b/AK/JsonParser.cpp
index 2e177ee7f7..8ba3987873 100644
--- a/AK/JsonParser.cpp
+++ b/AK/JsonParser.cpp
@@ -212,7 +212,10 @@ Optional<JsonValue> JsonParser::parse_number()
             whole = number.value();
         }
 
-        int fraction = fraction_string.to_uint().value();
+        auto fraction_string_uint = fraction_string.to_uint();
+        if (!fraction_string_uint.has_value())
+            return {};
+        int fraction = fraction_string_uint.value();
         fraction *= (whole < 0) ? -1 : 1;
 
         auto divider = 1;