This backports a patch from Qt 5.6 that fixed a SIGFPE when using Xvfb.
I've tested this with an updated ruby-capybara-webkit running using Xvfb
and confirmed that it fixes the issue.
OK?
Thanks,
Jeremy
Index: Makefile
===================================================================
RCS file: /cvs/ports/x11/qt5/Makefile,v
retrieving revision 1.52
diff -u -p -r1.52 Makefile
--- Makefile 6 Sep 2016 09:00:19 -0000 1.52
+++ Makefile 20 Sep 2016 22:40:04 -0000
@@ -19,7 +19,7 @@ COMMENT-sqlite2 = SQLite 2.x plugin for
COMMENT-tds = TDS plugin for Qt5
PKGNAME-main = qt5-${VERSION}
-REVISION-main = 1
+REVISION-main = 2
PKGNAME-examples = qt5-examples-${VERSION}
REVISION-examples = 0
PKGNAME-html = qt5-html-${VERSION}
Index: patches/patch-qtbase_src_plugins_platforms_xcb_qxcbscreen_cpp
===================================================================
RCS file: patches/patch-qtbase_src_plugins_platforms_xcb_qxcbscreen_cpp
diff -N patches/patch-qtbase_src_plugins_platforms_xcb_qxcbscreen_cpp
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-qtbase_src_plugins_platforms_xcb_qxcbscreen_cpp 20 Sep
2016 22:51:57 -0000
@@ -0,0 +1,17 @@
+$OpenBSD$
+
+Fix SIGFPE when using Xvfb, backported from Qt 5.6
+(https://codereview.qt-project.org/#/c/140411/).
+
+--- qtbase/src/plugins/platforms/xcb/qxcbscreen.cpp.ports.orig Tue Sep 20
15:49:42 2016
++++ qtbase/src/plugins/platforms/xcb/qxcbscreen.cpp Tue Sep 20 15:50:09 2016
+@@ -544,7 +544,8 @@ void QXcbScreen::updateRefreshRate(xcb_randr_mode_t mo
+ for (; modesIter.rem; xcb_randr_mode_info_next(&modesIter)) {
+ xcb_randr_mode_info_t *modeInfo = modesIter.data;
+ if (modeInfo->id == mode) {
+- m_refreshRate = modeInfo->dot_clock / (modeInfo->htotal *
modeInfo->vtotal);
++ const uint32_t dotCount = modeInfo->htotal * modeInfo->vtotal;
++ m_refreshRate = (dotCount != 0) ? modeInfo->dot_clock /
dotCount : 0;
+ m_mode = mode;
+ break;
+ }
