Strange Bug: Restoring minimized Progs closes them
lazarus / 64-FPC development

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Pascal · 2017-03-24 12:46

I have a strange bug with lazarus trunk (54473) and FPC trunk (35650).
The IDE and other programs close when they are restored from minimized
state.
WM_SHOWWINDOW also does WM_CLOSE.
When switching back to FPC 3.0.2 everything is okay again.

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Pascal · 2017-03-24 12:57

This is the stack trace at OnClose:

Code: Text  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i #0
TFORM1__FORMCLOSE(0x28402c8, CAFREE, <error reading variable>) at
unit1.pas:33#1 TCUSTOMFORM__DOCLOSE(CAFREE, <error reading variable>)
at .\include\customform.inc:966#2 TCUSTOMFORM__CLOSE(<error reading
variable>) at .\include\customform.inc:2212#3
TCUSTOMFORM__WMCLOSEQUERY({MSG = 66622, WPARAM = 0, LPARAM = 0, RESULT
= 0, WPARAMLO = 0, WPARAMHI = 0, WPARAMFILLER = {}, LPARAMLO = 0,
LPARAMHI = 0, LPARAMFILLER = {}, RESULTLO = 0, RESULTHI = 0,
RESULTFILLER = {}}, <error reading variable>) at
.\include\customform.inc:2292#4 SYSTEM$_$TOBJECT_$__$$_DISPATCH$formal
at :0#5 VMT_$FORMS_$$_TCUSTOMFORM at :0#6 ?? at :0#7
TWINCONTROL__WNDPROC({MSG = 66622, WPARAM = 0, LPARAM = 0, RESULT = 0,
WPARAMLO = 0, WPARAMHI = 0, WPARAMFILLER = {}, LPARAMLO = 0, LPARAMHI
= 0, LPARAMFILLER = {}, RESULTLO = 0, RESULTHI = 0, RESULTFILLER =
{}}, <error reading variable>) at .\include\wincontrol.inc:5395#8
TCUSTOMFORM__WNDPROC({MSG = 66622, WPARAM = 0, LPARAM = 0, RESULT = 0,
WPARAMLO = 0, WPARAMHI = 0, WPARAMFILLER = {}, LPARAMLO = 0, LPARAMHI
= 0, LPARAMFILLER = {}, RESULTLO = 0, RESULTHI = 0, RESULTFILLER =
{}}, <error reading variable>) at .\include\customform.inc:1474#9
DELIVERMESSAGE(0x28402c8, <error reading variable: Attempt to
dereference a generic pointer.>) at lclmessageglue.pas:112#10
TWINDOWPROCHELPER__DOWINDOWPROC(<error reading variable>) at
.\win32\win32callback.inc:2499#11 WINDOWPROC(4918112, 16, 0, 0) at
.\win32\win32callback.inc:2672#12 CUSTOMFORMWNDPROC(4918112, 16, 0, 0)
at .\win32\win32wsforms.pp:386#13 USER32!SetManipulationInputTarget at
:0#14 USER32!DispatchMessageW at :0#15 USER32!EndTask at :0#16
ADJUSTFORMBOUNDS(0x27dd360, <error reading variable: Cannot access
memory at address 0x60f1db5b>) at .\win32\win32wsforms.pp:305#17
USER32!SendMessageA at :0#18 TWINDOWPROCHELPER__DOWINDOWPROC(<error
reading variable>) at .\win32\win32callback.inc:2023#19
WINDOWPROC(3213574, 19, 0, 0) at .\win32\win32callback.inc:2672#20
USER32!SetManipulationInputTarget at :0#21 USER32!DispatchMessageW at
:0#22 USER32!DispatchMessageW at :0#23
USER32!MsgWaitForMultipleObjectsEx at :0#24
ntdll!KiUserCallbackDispatcher at :0#25 ?? at :0#26 USER32!SetRect at
:0#27 UxTheme!OpenThemeData at :0#28 UxTheme!GetThemeBool at :0#29
USER32!DispatchMessageW at :0#30
TWINDOWPROCHELPER__DOSYSCMDRESTORE(<error reading variable>) at
.\win32\win32callback.inc:1007#31
TWINDOWPROCHELPER__HANDLESYSCOMMAND(<error reading variable>) at
.\win32\win32callback.inc:1043#32
TWINDOWPROCHELPER__DOWINDOWPROC(<error reading variable>) at
.\win32\win32callback.inc:2318#33 WINDOWPROC(3213574, 274, 61728, 0)
at .\win32\win32callback.inc:2672#34 USER32!SetManipulationInputTarget
at :0#35 USER32!DispatchMessageW at :0#36 USER32!DispatchMessageW at
:0#37 USER32!DispatchMessageW at :0#38
TWIN32WIDGETSET__APPPROCESSMESSAGES(<error reading variable>) at
.\win32\win32object.inc:407#39 TAPPLICATION__HANDLEMESSAGE(<error
reading variable>) at .\include\application.inc:1286#40
TAPPLICATION__RUNLOOP(<error reading variable>) at
.\include\application.inc:1424#41 TWIDGETSET__APPRUN(0x422f80
<TAPPLICATION__RUNLOOP>, <error reading variable>) at
.\include\interfacebase.inc:54#42 TAPPLICATION__RUN(<error reading
variable>) at .\include\application.inc:1412#43 main at
C:\Users\RIEKEN~1\AppData\Local\Temp\X-Lazarus\project1.lpr:19 
OnClose is fired a second time:
Code: Text  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i #0
TFORM1__FORMCLOSE(0x28402c8, CAFREE, <error reading variable>) at
unit1.pas:33#1 TCUSTOMFORM__DOCLOSE(CAFREE, <error reading variable>)
at .\include\customform.inc:966#2 TCUSTOMFORM__CLOSE(<error reading
variable>) at .\include\customform.inc:2212#3
TCUSTOMFORM__WMCLOSEQUERY({MSG = 66622, WPARAM = 0, LPARAM = 0, RESULT
= 0, WPARAMLO = 0, WPARAMHI = 0, WPARAMFILLER = {}, LPARAMLO = 0,
LPARAMHI = 0, LPARAMFILLER = {}, RESULTLO = 0, RESULTHI = 0,
RESULTFILLER = {}}, <error reading variable>) at
.\include\customform.inc:2292#4 SYSTEM$_$TOBJECT_$__$$_DISPATCH$formal
at :0#5 VMT_$FORMS_$$_TCUSTOMFORM at :0#6 ?? at :0#7
TWINCONTROL__WNDPROC({MSG = 66622, WPARAM = 0, LPARAM = 0, RESULT = 0,
WPARAMLO = 0, WPARAMHI = 0, WPARAMFILLER = {}, LPARAMLO = 0, LPARAMHI
= 0, LPARAMFILLER = {}, RESULTLO = 0, RESULTHI = 0, RESULTFILLER =
{}}, <error reading variable>) at .\include\wincontrol.inc:5395#8
TCUSTOMFORM__WNDPROC({MSG = 66622, WPARAM = 0, LPARAM = 0, RESULT = 0,
WPARAMLO = 0, WPARAMHI = 0, WPARAMFILLER = {}, LPARAMLO = 0, LPARAMHI
= 0, LPARAMFILLER = {}, RESULTLO = 0, RESULTHI = 0, RESULTFILLER =
{}}, <error reading variable>) at .\include\customform.inc:1474#9
DELIVERMESSAGE(0x28402c8, <error reading variable: Attempt to
dereference a generic pointer.>) at lclmessageglue.pas:112#10
TWINDOWPROCHELPER__DOWINDOWPROC(<error reading variable>) at
.\win32\win32callback.inc:2499#11 WINDOWPROC(4918112, 16, 0, 0) at
.\win32\win32callback.inc:2672#12 CUSTOMFORMWNDPROC(4918112, 16, 0, 0)
at .\win32\win32wsforms.pp:386#13 USER32!SetManipulationInputTarget at
:0#14 USER32!DispatchMessageW at :0#15 USER32!EndTask at :0#16
ADJUSTFORMBOUNDS(0x27dd480, <error reading variable: Cannot access
memory at address 0x60f1d8db>) at .\win32\win32wsforms.pp:305#17
USER32!SendMessageA at :0#18 TWINDOWPROCHELPER__DOWINDOWPROC(<error
reading variable>) at .\win32\win32callback.inc:2023#19
WINDOWPROC(3213574, 19, 0, 0) at .\win32\win32callback.inc:2672#20
USER32!SetManipulationInputTarget at :0#21 USER32!DispatchMessageW at
:0#22 USER32!DispatchMessageW at :0#23
USER32!MsgWaitForMultipleObjectsEx at :0#24
ntdll!KiUserCallbackDispatcher at :0#25 ?? at :0#26
TWINDOWPROCHELPER__DOWINDOWPROC(<error reading variable>) at
.\win32\win32callback.inc:2308#27 WINDOWPROC(4918112, 24, 1, 0) at
.\win32\win32callback.inc:2672#28 CUSTOMFORMWNDPROC(4918112, 24, 1, 0)
at .\win32\win32wsforms.pp:386#29 USER32!SetManipulationInputTarget at
:0#30 USER32!DispatchMessageW at :0#31 USER32!DispatchMessageW at
:0#32 USER32!MsgWaitForMultipleObjectsEx at :0#33
ntdll!KiUserCallbackDispatcher at :0#34 ?? at :0#35
TWINDOWPROCHELPER__HANDLESYSCOMMAND(<error reading variable>) at
.\win32\win32callback.inc:1043#36
TWINDOWPROCHELPER__DOWINDOWPROC(<error reading variable>) at
.\win32\win32callback.inc:2318#37 WINDOWPROC(3213574, 274, 61728, 0)
at .\win32\win32callback.inc:2672#38 USER32!SetManipulationInputTarget
at :0#39 USER32!DispatchMessageW at :0#40 USER32!DispatchMessageW at
:0#41 USER32!DispatchMessageW at :0#42
TWIN32WIDGETSET__APPPROCESSMESSAGES(<error reading variable>) at
.\win32\win32object.inc:407#43 TAPPLICATION__HANDLEMESSAGE(<error
reading variable>) at .\include\application.inc:1286#44
TAPPLICATION__RUNLOOP(<error reading variable>) at
.\include\application.inc:1424#45 TWIDGETSET__APPRUN(0x422f80
<TAPPLICATION__RUNLOOP>, <error reading variable>) at
.\include\interfacebase.inc:54#46 TAPPLICATION__RUN(<error reading
variable>) at .\include\application.inc:1412#47 main at
C:\Users\RIEKEN~1\AppData\Local\Temp\X-Lazarus\project1.lpr:19

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Cyrax · 2017-03-24 16:08

I can't reproduce your problem. Both 32- and 64-bit Lazarus behaves
normally when restoring from minimized state.

Do you have anchordocking package installed into your IDE?

Windows Server 2008 R2 SP1.

FPC trunk r35650, build with these options : Quoteclean
all
install
OPT=-gw2 -godwarfsets -godwarfmethodclassprefix -gl -O- -Xs- -Si- -vbq
-dTEST_WIN32_SEH
COMPILER_OPTIONS=-gw2 -godwarfsets -godwarfmethodclassprefix -gl -O-
-Xs- -Si- -vbq -dTEST_WIN32_SEH
OS_TARGET=win32
CPU_TARGET=i386
REVSTR=35650
UPXPROG=echo
IDE=1
NOWPOCYCLE=1
INSTALL_PREFIX=j:\free_pascal_and_lazarus_new4\fpc\i386\win32\binary\3
.1.1\fpc_trunk\trunk
LOCAL_FPMAKE_OPT=--verbose
ALLTARGET=all

Lazarus trunk r54471, build with these options: Quoteclean all
"OPT=-gw2 -godwarfsets -godwarfmethodclassprefix -gl -gh -O- -Si- -vb
-dHEAPTRC_WINDOW -dDBG_WITH_DEBUGGER_DEBUG" UPXPROG=echo
USESVN2REVISIONINC=0

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Pascal · 2017-03-27 07:53

Yes anchordocking is installed. But also simple App quits on restoring
from minimized state.
I will try a clean checkout later.

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Pascal · 2017-03-27 08:01

See http://bugs.freepascal.org/view.php?id=31589