From e91dcdb0de259c63dd5b6bd51d2447a10061ee4f Mon Sep 17 00:00:00 2001
From: Michal Maciola <71131832+mmaciola@users.noreply.github.com>
Date: Thu, 9 Sep 2021 10:45:58 +0200
Subject: [PATCH] wasm: validate empty data (#790)

---
 src/wasm/thorvgwasm.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/wasm/thorvgwasm.cpp b/src/wasm/thorvgwasm.cpp
index d6cf0966..947a0fa7 100644
--- a/src/wasm/thorvgwasm.cpp
+++ b/src/wasm/thorvgwasm.cpp
@@ -47,7 +47,12 @@ public:
         mErrorMsg = "None";
 
         if (!mSwCanvas) {
-            mErrorMsg = "Canvas is NULL";
+             mErrorMsg = "Canvas is NULL";
+             return false;
+        }
+
+        if (data.empty()) {
+            mErrorMsg = "Data is empty";
             return false;
         }