See <https://sourceforge.net/p/plplot/bugs/158/> for the details of what I know about this memory management bug for -DPLPLOT_USE_QT5=ON so far.
One limitation of my testing is it is for epa_built versions of Qt5 (both 5.3.1 and 5.3.2), and it is conceivable there is some misconfiguration of the Qt5 epa_build (although there were no warnings about that in the build logs.) So to help eliminate that possibility could someone here with access to a Linux installation of Qt5 try (for -DPLPLOT_USE_QT5=ON) running valgrind for both the -dev wxwidgets and qt_example cases to see if you can replicate the memory management issues I am seeing for the epa_built case? For example, from <https://packages.debian.org/search?keywords=qt5&searchon=names&suite=all§ion=all> and <http://packages.ubuntu.com/search?keywords=qt5&searchon=names&suite=all§ion=all> I notice qt5 is in Debian testing (Jessie) and Ubuntu trusty and later, and I assume Qt5 has also made it into the latest Fedora versions as well. So if you have access to one of those Linux distros, I would appreciate some verification of these valgrind issues I see for the epa_built cases. Of course, if we do get that verification, then it is still not clear whether these memory management issues are due to some incompatibility between qt and Qt5 (i.e., the pattern of Qt library calls that work so well in the Qt4 case might not be correct usage in the Qt5 case) or some issue with Qt5 alone. Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); the Time Ephemerides project (timeephem.sf.net); PLplot scientific plotting software package (plplot.sf.net); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
