From 45f5b3b79c3ae97bda9f0a876ee29c23b38e83dd Mon Sep 17 00:00:00 2001
From: Mark Karpeles <magicaltux@gmail.com>
Date: Sun, 13 Jun 2021 22:35:47 +0900
Subject: [PATCH] fix https://github.com/wkhtmltopdf/wkhtmltopdf/issues/3119 by
 ensuring /dev/stdout is writable prior to using it directly

---
 src/lib/pdfconverter.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib/pdfconverter.cc b/src/lib/pdfconverter.cc
index b0e668339..6c30b896a 100644
--- a/src/lib/pdfconverter.cc
+++ b/src/lib/pdfconverter.cc
@@ -24,6 +24,7 @@
 #include <QDateTime>
 #include <QDir>
 #include <QFile>
+#include <QFileInfo>
 #include <QPair>
 #include <QPrintEngine>
 #include <QTimer>
@@ -344,7 +345,7 @@ void PdfConverterPrivate::pagesLoaded(bool ok) {
 	lout = settings.out;
 	if (settings.out == "-") {
 #ifndef Q_OS_WIN32
-		 if (QFile::exists("/dev/stdout"))
+		 if ((QFile::exists("/dev/stdout")) && (QFileInfo("/dev/stdout").isWritable()))
 			 lout = "/dev/stdout";
 		 else
 #endif