Code running in 5.12, but not in 5.15 or higher

Thomas 63

Hello

I generate code in Qt Creator 4.14.2
My code did run in all older Versions up to 5.12.4
But when I use it in 5.15.2 or 6.0.1, it does compile but crashes with the following message:

---------------------------
Signal erhalten
---------------------------
<p>Der Prozess wurde wegen eines Signals vom Betriebssystem angehalten.<p><table><tr><td>Name des Signals : </td><td>SIGSEGV</td></tr><tr><td>Bedeutung : </td><td>Segmentation fault</td></tr></table>
---------------------------
OK   
---------------------------

It crashes in the line

ui->setupUi(this);

In mainwindow.cpp
What can i do to avoid this?

Thanks,

Thomas

jsulm

@Thomas-63 said in Code running in 5.12, but not in 5.15 or higher:

What can i do to avoid this?

Please post the stack trace after crash.

Also, did you completely rebuild your project after switching to other Qt version?

Thomas 63

Is this the stack trace?

0x4014b0                  48 83 ec 28                    sub    $0x28,%rsp
0x4014b4  <+    4>        48 8b 05 05 af 53 00           mov    0x53af05(%rip),%rax        # 0x93c3c0 <.refptr.mingw_app_type>
0x4014bb  <+   11>        c7 00 01 00 00 00              movl   $0x1,(%rax)
0x4014c1  <+   17>        e8 aa aa 25 00                 callq  0x65bf70 <__security_init_cookie>
0x4014c6  <+   22>        e8 b5 fc ff ff                 callq  0x401180 <__tmainCRTStartup>
0x4014cb  <+   27>        90                             nop
0x4014cc  <+   28>        90                             nop
0x4014cd  <+   29>        48 83 c4 28                    add    $0x28,%rsp
0x4014d1  <+   33>        c3                             retq
0x4014d2  <+   34>        0f 1f 40 00                    nopl   0x0(%rax)
0x4014d6  <+   38>        66 2e 0f 1f 84 00 00 00 00 00  nopw   %cs:0x0(%rax,%rax,1)

or this?

1 QWidget::raise()                            0x3207c70 
2 Ui_MainWindow::setupUi ui_mainwindow.h 2602 0x6e3664  
3 MainWindow::MainWindow mainwindow.cpp  74   0x403f6f  
4 qMain                  main.cpp        8    0x4015ac  
5 WinMain                qtmain_win.cpp  97   0x65d41d  
6 __tmainCRTStartup                           0x4013c7  
7 WinMainCRTStartup                           0x4014cb

Yes. I made a rebuild of the project

Christian Ehrlicher

Simplify your code until it no longer crashes. Doesn't look to hard to track down the issues since it's directly in the ctor. I would guess 'ui' is not initialized but without code it's just a wild guess.

Thomas 63

It is solved - I had to find some updates for external libraries and the problem was gone.

Solved Code running in 5.12, but not in 5.15 or higher