From 6c9ff26eaac38fd61876d9b0882fbbfaf4e38a7c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaakko=20Kera=CC=88nen?= <jaakko.keranen@iki.fi>
Date: Wed, 22 Jan 2020 06:20:43 +0200
Subject: [PATCH] Fixed|libgui: Recognizing TGA image data

Zero-area images are invalid.
---
 doomsday/sdk/libgui/src/graphics/image.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doomsday/sdk/libgui/src/graphics/image.cpp b/doomsday/sdk/libgui/src/graphics/image.cpp
index 877cbcfca9..3eec4c3117 100644
--- a/doomsday/sdk/libgui/src/graphics/image.cpp
+++ b/doomsday/sdk/libgui/src/graphics/image.cpp
@@ -239,6 +239,10 @@ static bool recognize(Block const &data)
     {
         Header header;
         Reader(data) >> header;
+        if (header.size.x == 0 || header.size.y == 0)
+        {
+            return false;
+        }
         if (header.imageType == Header::ColorMapped && header.colorMapType == Header::ColorMap256 &&
             header.depth == 8)
         {