On Sun, 7 May 2017, Michael Van Canneyt wrote:
On Sun, 7 May 2017, Mattias Gaertner via Lazarus wrote:
On Sat, 6 May 2017 21:26:38 +0200 (CEST)
Michael Van Canneyt via Lazarus <lazarus@lists.lazarus-ide.org> wrote:
[...]
I have not exactly been able to reproduce reliably, but the following just
triggered
it:
- Start IDE
- Open project
- Select a popup menu (there are several)
- Double click to edit
- Select menu item 1
- Immediatly select menu item 2.
-> crash.
But also simply selecting something in the menu editor, and going to the
object
inspector can crash it.
As a result I find myself saving all files before entering the menu
editor.
Not exactly ideal, to say the least.
Anyone else experiencing this ?
Latest Lazarus from SVN. GTK2, linux 64-bit.
It does not crash here. So it needs something more to trigger the bug.
Maybe the FPC Version?
3.0.2
Stacktrace?
I will try to get one.
Here it is.
When It happened, I had just selected a menu item, and wanted to change it's
name in the object inspector (I think I was typing the first characters of
the new name, not 100% sure on that).
TObjectInspectorDlg.FillPersistentComboBox: Updating ComboBox with components
TObjectInspectorDlg.FillPersistentComboBox: Updating ComboBox with components
TObjectInspectorDlg.FillPersistentComboBox: Updating ComboBox with components
TObjectInspectorDlg.FillPersistentComboBox: Updating ComboBox with components
TObjectInspectorDlg.FillPersistentComboBox: Updating ComboBox with components
Hint: (lazarus) TMainIDE.DesignerRenameComponent Old=MenuItem37:TMenuItem
New=MIResize Owner=FPReportDesignerForm:TFPReportDesignerForm
WARNING: TShadowItem.Destroy with LCLRefCount>0. Hint: Maybe the component is
processing an event?
TApplication.HandleException Access violation
Stack trace:
$0000000000000000
$00000000009FD49D line 1617 of ../designer/menueditor.pp
$0000000000A02673 line 2590 of ../designer/menueditor.pp
$00000000005B29F8 line 2242 of include/control.inc
$00000000005B2E61 line 2375 of include/control.inc
$0000000000436562 line 602 of ../inc/objpas.inc
$00000000005B28FD line 2202 of include/control.inc
$00000000005A580C line 5396 of include/wincontrol.inc
$00000000007722AC line 112 of lclmessageglue.pas
$000000000066C191 line 3702 of gtk2/gtk2proc.inc
$000000000067AEC6 line 2137 of gtk2/gtk2callback.inc
$000000000067A5C8 line 1899 of gtk2/gtk2callback.inc
$00007F04FDB6EAFC
The WARNING is a bit frightening...
Looking at the stack trace, it looks like FShadowMenu in line 2590 of menueditor is Nil.
Which seems to correspond with the warning ?
After clicking Abort, I get then 2 more AVs:
[TJITComponentList.DestroyJITComponent] ERROR destroying component Error:
Access violation
Stack trace:
$00000000004E2AD4 line 790 of mainbase.pas
$00000000004CD54F line 8978 of main.pp
$000000000090B365 line 6331 of propedits.pp
$00000000009D95C3 line 3008 of ../designer/designer.pp
$00000000009D9DEB line 3165 of ../designer/designer.pp
$000000000048529F line 288 of include/customform.inc
$000000000053492E line 481 of ../objpas/classes/compon.inc
$00000000006A4C15 line 131 of lclclasses.pp
$00000000005B9D59 line 4991 of include/control.inc
$00000000005A81B8 line 6601 of include/wincontrol.inc
$00000000005BC54F line 54 of include/customcontrol.inc
$000000000048394F line 316 of include/scrollingwincontrol.inc
$0000000000484FF1 line 212 of include/customform.inc
$0000000000435E81 line 288 of ../inc/objpas.inc
$00000000009BE1AE line 777 of ../designer/jitforms.pp
$00000000009BDEDB line 728 of ../designer/jitforms.pp
$0000000000435E81 line 288 of ../inc/objpas.inc
TCustomFormEditor.JITListException List.CurReadStreamClass=nil nil
TApplication.HandleException: there was another exception during showing the
first exception
Stack trace:
$0000000000690829 line 768 of laz_avl_tree.pp
$00000000009E6B69 line 2086 of customformeditor.pp
$00000000009E0CC1 line 815 of customformeditor.pp
$00000000009E0C87 line 806 of customformeditor.pp
$0000000000481346 line 2108 of forms.pp
$00000000009D9575 line 2995 of ../designer/designer.pp
$00000000009D9DEB line 3165 of ../designer/designer.pp
$000000000048529F line 288 of include/customform.inc
$000000000053492E line 481 of ../objpas/classes/compon.inc
$000000000090D446 line 7112 of propedits.pp
$0000000000435E81 line 288 of ../inc/objpas.inc
$000000000049C913 line 870 of lclproc.pas
$00000000004AD6C1 line 1662 of main.pp
$0000000000435E81 line 288 of ../inc/objpas.inc
$0000000000493A01 line 1093 of include/application.inc
$0000000000480986 line 1904 of forms.pp
$000000000043B623 line 972 of ../inc/system.inc
lazarus.pp - unhandled exception
And I need to kill lazarus with a -KILL signal.
Luckily I saved my form just before it happened :)
Michael.
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