On Mon, 8 May 2017, Juha Manninen via Lazarus wrote:
Can you please create a proper backtrace with gdb using the latest
Lazarus trunk.
It shows also function names and parameter values etc.
I was actually able to reproduce the access violation once but not
more however much I tried.
The stack trace I posted earlier for this issue will have to do.
It's simply *impossible* to debug lazarus using GDB.
I get exceptions from the code tools *ALL THE TIME* because it is timer
triggered. because of this, the working process becomes simply impossible.
And so, every *$รงยง1@#!!! stacktrace looks like this:
#1 0x0000000000c4dcf0 in RAISEEXCEPTIONINSTANCE (this=0x7fffdbad3390,
THEEXCEPTION=0x7fffdb508a40, CLEARNICEPOS=true) at customcodetool.pas:2439
#2 0x0000000000c4dd67 in RAISEEXCEPTIONCLASS (this=0x7fffdbad3390,
ID=20170421200105, AMESSAGE=0x7fffe0128698 'identifier not found: Name',
EXCEPTIONCLASS=0x2225010, CLEARNICEPOS=true) at customcodetool.pas:2450
#3 0x0000000000c47dc0 in RAISEEXCEPTION (this=0x7fffdbad3390,
ID=20170421200105, AMESSAGE=0x7fffe0128698 'identifier not found: Name',
CLEARNICEPOS=true)
at customcodetool.pas:399
#4 0x0000000000c47e62 in RAISEEXCEPTIONFMT (this=0x7fffdbad3390,
ID=20170421200105, AMESSAGE=0x1a6e038 'identifier not found: %s', ARGS=...,
highARGS=0,
CLEARNICEPOS=true) at customcodetool.pas:405
#5 0x0000000000861726 in RAISENOTFOUND (parentfp=0x7fffffffcf50) at
finddeclarationtool.pas:4071
#6 0x000000000086159e in CHECKRESULT (parentfp=0x7fffffffcfe0,
NEWRESULT=false, CALLONIDENTIFIERFOUND=false) at finddeclarationtool.pas:4177
#7 0x000000000085fd3d in FINDIDENTIFIERINCONTEXT (this=0x7fffdbad3390,
PARAMS=0x7fffe927b4e0, IDENTFOUNDRESULT=(unknown: 3685561232))
at finddeclarationtool.pas:4998
#8 0x0000000000867d05 in FINDIDENTIFIERINCONTEXT (this=0x7fffdbad3390,
PARAMS=0x7fffe927b4e0) at finddeclarationtool.pas:7163
#9 0x00000000008595f7 in FINDDECLARATION (this=0x7fffdbad3390, CURSORPOS=...,
SEARCHSMARTFLAGS=4, NEWEXPRTYPE=..., NEWPOS=..., NEWTOPLINE=-610849184)
at finddeclarationtool.pas:2409
#10 0x0000000000859f54 in FINDDECLARATION (this=0x7fffdbad3390, CURSORPOS=...,
SEARCHSMARTFLAGS=4, NEWTOOL=0x7fffdbad3390, NEWNODE=0x7fffdb972e60,
NEWPOS=..., NEWTOPLINE=-610849184) at finddeclarationtool.pas:2468
#11 0x00000000009b6c13 in GETHTMLHINTFOREXPR (this=0x7fffe9787540,
CTEXPRTYPE=..., XYPOS=..., OPTIONS=0, BASEURL=0x1a98e20 'lazdoc://',
HTMLHINT=0x0,
CACHEWASUSED=false) at codehelp.pas:2601
#12 0x00000000009b6267 in GETHTMLHINT (this=0x7fffe9787540,
CODE=0x7fffe82367e0, X=14, Y=1872, OPTIONS=0, BASEURL=0x1a98e20 'lazdoc://',
HTMLHINT=0x0,
PROPDETAILS=0x0, CACHEWASUSED=false) at codehelp.pas:2469
#13 0x00000000004d96a6 in OICHANGEDTIMERTIMER (this=0x7ffff7f99550,
SENDER=0x7fffe80448c0) at main.pp:12191
#14 0x0000000000752b94 in DOONTIMER (this=0x7fffe80448c0) at customtimer.pas:175
#15 0x0000000000752ae5 in TIMER (this=0x7fffe80448c0) at customtimer.pas:150
This error is obviously bogus, since the compiler processes the program fine.
So the original stack trace which I posted should suffice to diagnose the
problem:
ObjectInspectorDlg.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 2 following lines should tell you everything you need, IMHO:
$00000000009FD49D line 1617 of ../designer/menueditor.pp
$0000000000A02673 line 2590 of ../designer/menueditor.pp
The GDB stack trace will give you little more useful information.
Michael.--
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