使用qt显示点云数据，但在我退出时发生了核心转储

Question

我的开发环境是QT 5.14.2、PCL 1.9、VTK 8.2.0。

这是我的初始代码：

// Set up the QVTK window
vtkSmartPointer<vtkGenericOpenGLRenderWindow> renderWindow = vtkSmartPointer<vtkGenericOpenGLRenderWindow>::New();
vtkSmartPointer<vtkRenderer> render = vtkSmartPointer<vtkRenderer>::New ();
viewer.reset (new pcl::visualization::PCLVisualizer (render, renderWindow, "viewer", false));
ui->qvtkWidget->SetRenderWindow (renderWindow);
viewer->setupInteractor (ui->qvtkWidget->GetInteractor (), ui->qvtkWidget->GetRenderWindow ());
ui->qvtkWidget->update ();

当我退出程序时，发生了核心转储，如下所示：

PID: 47999 (design)
UID: 1000 (oyoungy)
GID: 1000 (oyoungy)
Signal: 6 (ABRT)
Timestamp: Thu 2020-04-16 17:00:59 CST (17s ago)
Command Line: /home/oyoungy/Documents/MY_OWN_CODE_FILE/GraduationDesign/build-design-Desktop-Debug/design
Executable: /home/oyoungy/Documents/MY_OWN_CODE_FILE/GraduationDesign/build-design-Desktop-Debug/design
Control Group: /user.slice/user-1000.slice/session-2.scope
Unit: session-2.scope
Slice: user-1000.slice
Session: 2
Owner UID: 1000 (oyoungy)
Boot ID: dca47200b23341b8b325752164aec950
Machine ID: b5d42cab79c04cbc8ebbda6d10f240fc
Hostname: oyoungy-pc
Storage: /var/lib/systemd/coredump/core.design.1000.dca47200b23341b8b325752164aec950.47999.1587027659000000000000.lz4
Message: Process 47999 (design) of user 1000 dumped core.
Stack trace of thread 47999:
#0  0x00007f61303d1ce5 raise (libc.so.6 + 0x3bce5)
#1  0x00007f61303bb857 abort (libc.so.6 + 0x25857)
#2  0x00007f61304152b0 __libc_message (libc.so.6 + 0x7f2b0)
#3  0x00007f613041c74a malloc_printerr (libc.so.6 + 0x8674a)
#4  0x00007f613041e13c _int_free (libc.so.6 + 0x8813c)
#5  0x00007f61303d4b3e __cxa_finalize (libc.so.6 + 0x3eb3e)
#6  0x00007f6147c64298 __do_global_dtors_aux (libvtkCommonSystem-8.2.so.1 + 0x9298)
#7  0x00007f614b7ab42b _dl_fini (ld-linux-x86-64.so.2 + 0x1142b)
#8  0x00007f61303d4537 __run_exit_handlers (libc.so.6 + 0x3e537)
#9  0x00007f61303d46ee exit (libc.so.6 + 0x3e6ee)
#10 0x00007f61303bd02a __libc_start_main (libc.so.6 + 0x2702a)
#11 0x00005593ec3b5eae n/a (/home/oyoungy/Documents/MY_OWN_CODE_FILE/GraduationDesign/build-design-Desktop-Debug/design + 0x27eae)
GNU gdb (GDB) 9.1

我尝试过QVTKWidget、QVTKOpenGLWidget和QVTKOpenGLNativeWidget，但仍然不起作用。如果我对代码ui->qvtkWidget->SetRenderWindow (renderWindow);进行注释，问题就不会发生，但我的pcl数据也无法显示。

Answer 1

Isolved我的问题。事实证明，qmake是问题的根源，当我使用qmake构建我的项目时，核心转储会发生，但当我迁移到cmake时，我的问题不再发生，我很乐意解决它，因为我退出时不需要面对核心转储文件。但我仍然对问题的根源感到困惑，为什么qmake会处理这个问题？这是我的qmake版本：

QMake version 3.1
Using Qt version 5.14.2 in /usr/lib