From 3006466a391e4ad3b5c17073249ecffd8fb938fb Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Tue, 8 Oct 2019 14:49:23 +0200
Subject: [PATCH] fix build failure with std::isdigit on Windows

---
 src/Gui/ViewProviderLink.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Gui/ViewProviderLink.cpp b/src/Gui/ViewProviderLink.cpp
index c5f3208a31..97fe58a5ad 100644
--- a/src/Gui/ViewProviderLink.cpp
+++ b/src/Gui/ViewProviderLink.cpp
@@ -41,6 +41,7 @@
 # include <Inventor/nodes/SoCube.h>
 # include <Inventor/sensors/SoNodeSensor.h>
 #endif
+#include <cctype>
 #include <atomic>
 #include <QApplication>
 #include <QFileInfo>