Check scaled dimensions for 0

Resolves: #1785416

poppler-0.73.0-check-scaled-size.patch

@@ -0,0 +1,34 @@
+From e0b8a980b71c29afdedaf37148c507947e83ce44 Mon Sep 17 00:00:00 2001
+From: Marek Kasik <mkasik@redhat.com>
+Date: Fri, 20 Sep 2019 16:33:04 +0200
+Subject: [PATCH] CairoOutputDev: Check scaled dimensions for 0
+
+Check scaledWidth and scaledHeight for 0 at RescaleDrawImage::getSourceImage()
+as is done on other places. Set the dimension to 1 if it is 0.
+
+Fixes issue #737
+---
+ poppler/CairoOutputDev.cc | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/poppler/CairoOutputDev.cc b/poppler/CairoOutputDev.cc
+index 68927636..12f312c6 100644
+--- a/poppler/CairoOutputDev.cc
++++ b/poppler/CairoOutputDev.cc
+@@ -3134,6 +3134,13 @@ public:
+ 	  scaledWidth = MAX_PRINT_IMAGE_SIZE * (double)width/height;
+ 	}
+ 	needsCustomDownscaling = true;
++
++        if (scaledWidth == 0) {
++          scaledWidth = 1;
++        }
++        if (scaledHeight == 0) {
++          scaledHeight = 1;
++        }
+       } else {
+ 	needsCustomDownscaling = false;
+       }
+-- 
+2.21.0
+

poppler.spec

@@ -4,7 +4,7 @@
 Summary: PDF rendering library
 Name:    poppler
 Version: 0.73.0
-Release: 14%{?dist}
+Release: 15%{?dist}
 License: (GPLv2 or GPLv3) and GPLv2+ and LGPLv2+ and MIT
 URL:     http://poppler.freedesktop.org/
 Source0: http://poppler.freedesktop.org/poppler-%{version}.tar.xz
@@ -56,6 +56,9 @@ Patch18: poppler-0.73.0-PSOutputDev-buffer-read.patch
 # https://bugzilla.redhat.com/show_bug.cgi?id=1732340
 Patch19: poppler-0.73.0-JPXStream-length.patch
 
+# https://bugzilla.redhat.com/show_bug.cgi?id=1785416
+Patch20: poppler-0.73.0-check-scaled-size.patch
+
 BuildRequires: cmake
 BuildRequires: gcc-c++
 BuildRequires: gettext-devel
@@ -286,6 +289,10 @@ test "$(pkg-config --modversion poppler-splash)" = "%{version}"
 %{_mandir}/man1/*
 
 %changelog
+* Fri Dec 20 2019 Marek Kasik <mkasik@redhat.com> - 0.73.0-15
+- Check scaled dimensions for 0
+- Resolves: #1785416
+
 * Wed Jul 24 2019 Marek Kasik <mkasik@redhat.com> - 0.73.0-14
 - Ignore dict Length if it is broken
 - Resolves: #1732342