PureBasic Forums - English

Posted: **Mon Jul 21, 2025 10:47 am**

So it took me a while to switch to C backend because the debugger seems to quit unexpectedly most of the time when the program crashes. For instance:

Code: Select all

DeclareModule bar
  Declare ShowFoo()
EndDeclareModule

Module bar
  Global NewList *foo()
  
  Procedure ShowFoo()
    FirstElement(*foo())
    Debug *foo()
  EndProcedure
EndModule

OpenWindow(0, 0, 0, 1920, 1080, "", #PB_Window_BorderLess)

Repeat
  bar::ShowFoo()  
Until WaitWindowEvent() = #PB_Event_CloseWindow

This crashes in a correct way, ie. line 11 is highlighted and the compiler tells me that the list doesn't have a current element. Fine. However, I have basically the same code architecture in my game (of course a lot more complex), and every time, the debugger quits unexpectedly and doesn't catch the error (same error as in this example – and it does catch the error with ASM backend).

I'd like to know if other people experience the same thing? I've tried with / without optimised code, it doesn't change anything.

Posted: **Mon Jul 21, 2025 10:48 pm**

PB Help FirstElement ...

Returns the address of the data in the first list element if successful and zero if there if there are no elements in the list.

Code: Select all

Module bar
  Global NewList *foo()
  
  Procedure ShowFoo()
    If FirstElement(*foo())
      Debug *foo()
    EndIf
    
  EndProcedure
EndModule

Posted: **Tue Jul 22, 2025 6:58 am**

@mk-soft

It was not the point to find a fix for the code

Posted: **Tue Jul 22, 2025 9:42 am**

Yes I notice that the debugger crashes out mostly with threaded code bugs.
Could it be an issue caused at linking by LTO?

Posted: **Wed Jul 23, 2025 8:44 am**

For information, I do not use threads.

PureBasic Forums - English

Debugger quitting unexpectedly with C backend?

Debugger quitting unexpectedly with C backend?

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