lyx: fix build

srcpkgs/lyx/patches/0001-Fix-compilation-with-Qt5.8dev.patch

@@ -0,0 +1,33 @@
+From 6d375ddeac49ac8c6340398c9797354edca3f5d1 Mon Sep 17 00:00:00 2001
+From: Guillaume Munch <gm@lyx.org>
+Date: Tue, 20 Dec 2016 00:15:58 +0100
+Subject: [PATCH] Fix compilation with Qt5.8dev
+
+---
+ src/frontends/qt4/GuiViewSource.cpp | 9 ++-------
+ 1 file changed, 2 insertions(+), 7 deletions(-)
+
+diff --git a/src/frontends/qt4/GuiViewSource.cpp b/src/frontends/qt4/GuiViewSource.cpp
+index 9c0ea1d707..fe593875e6 100644
+--- src/frontends/qt4/GuiViewSource.cpp
++++ src/frontends/qt4/GuiViewSource.cpp
+@@ -218,14 +218,9 @@ void ViewSourceWidget::updateView(BufferView const * bv)
+ 	if (changed && !texrow_) {
+ 		// position-to-row is unavailable
+ 		// we jump to the first modification
+-		const QChar * oc = old.constData();
+-		const QChar * nc = qcontent.constData();
++		int length = min(old.length(), qcontent.length());
+ 		int pos = 0;
+-		while (*oc != '\0' && *nc != '\0' && *oc == *nc) {
+-			++oc;
+-			++nc;
+-			++pos;
+-		}
++		for (; pos < length && old.at(pos) == qcontent.at(pos); ++pos) {}
+ 		QTextCursor c = QTextCursor(viewSourceTV->document());
+ 		//get some space below the cursor
+ 		c.setPosition(pos);
+-- 
+2.12.2
+