From f24f7b83986da4934473cd8e51a8695e009f77d3 Mon Sep 17 00:00:00 2001
From: Caolán McNamara <caolanm@redhat.com>
Date: Tue, 12 Jun 2018 13:32:01 +0100
Subject: crashtesting: asserts on empty gifs
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since...

commit d46c32140fdb05758c039dd27552b1788faac104
Date:   Thu Jun 7 12:37:33 2018 +0200

    assert in BitmapInfoAccess if bitmap is empty or we can't read from it

Change-Id: I0861667227b512634bce7381ef77ab99c7c011cf
Reviewed-on: https://gerrit.libreoffice.org/55685
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
---
 vcl/source/filter/igif/gifread.cxx | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/vcl/source/filter/igif/gifread.cxx b/vcl/source/filter/igif/gifread.cxx
index b050769be6ad..0000ef1ce61d 100644
--- a/vcl/source/filter/igif/gifread.cxx
+++ b/vcl/source/filter/igif/gifread.cxx
@@ -198,6 +198,12 @@ void GIFReader::CreateBitmaps(long nWidth, long nHeight, BitmapPalette* pPal,
         return;
     }
 
+    if (!aSize.Width() || !aSize.Height())
+    {
+        bStatus = false;
+        return;
+    }
+
     if (bGCTransparent)
     {
         const Color aWhite(COL_WHITE);
-- 
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