On 2018-12-29 09:17-0000 António Rodrigues Tomé wrote:
Unfortunately I was not able to make qt-example seg fault in my system so could not found out what was the problem.
I could only trigger the segfaults in a busy environment, i.e., the interactive part of comprehensive testing with all sorts of other interactive tests going at the same time. So I am not surprised you found it difficult to reproduce this issue. However, if you try a valgrind run on qt_example, you should find like I did that there is a memory leak associated with win because the combination QApplication a( argc, argv ); PlotWindow * win = new PlotWindow( Argc, Argv ); a.setActiveWindow( win ); win->setVisible( true ); [...] return a.exec(); leaves some memory associated with win undeleted. Note, cleanly deleting win is difficult (or at least I have had no success trying to do that without creating more segfaults) because of win's use by "a" above and the necessity (at least according to Qapplication documentation) that the exec method call be the last thing done in a main routine. Anyhow, if you can find some way to modify the above code so there is no memory leak associated with win, then that might solve the intermittent segfault on exit issue shown by qt_example. Alan __________________________ Alan W. Irwin 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 __________________________ __________________________ Alan W. Irwin 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 __________________________ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
