Hi,
I still have the problem mentioned in the attached mail from a few days
ago.
I've found out, that this behaviour is linked to QML's FileDialog that I
use in this way:
FileDialog{
//MessageDialog{
id:csvFileDialog
//fileMode:FileDialog.SaveFile
folder:(myFolder)
onAccepted:{
appController.importCSVAction(myFilename)//for testing, normally
csvFileDialog.fileUrl
csvFileDialog.close()
}
}
The crash (stacktrace: see below) comes a few seconds after accepting
the FileDialog. It is - contrary to my last mail - also responsible for
crashes without running with Debugger.
Those non-debug crashes appear later when I rush through the following
UI pages (no crashes when I give the interface some time to rest!),
quite some time after the FileDialog has been closed, so I had put the
blame on my code.
Error messages before (when opening the FileDialog) are galore and
diverse (see attached email) . Common is the term "onecore", there is
"library not registered", "out of memory" (rubbish!), "can't find the
specified file" and such.
When I Change it to "MessageDialog" (and comment out the folder
property) everything runs like a charm and my code is working, too. No
crashes, no matter how much load pressure I apply to the program.
Interesting side note: my FilderDialog doesn't know the
"fileMode:"property!
I am importing the modules below, the problem appears with Dialogs 1.2
as well as 1.1 (using the OLDDIALOGS qualifier).
Seems like a Qt bug because of changes in Win10 - is that correct?
Anyone any ideas?
Sebastian
importQtQuick2.7
importQtQuick.Controls1.4asQQC14
importQtQuick.Controls2.1
importde.herrdiel.classintouch.classintouch22.0
importQtQuick.Window2.2
importQtQuick.Layouts1.3
importQtQuick.Dialogs1.2
importQtQuick.Dialogs1.1asOLDDIALOGS
The stacktrace:
1 WTF::OSAllocator::reserveUncommitted OSAllocatorWin.cpp
48 0x2e904ec2
2 WTF::PageReservation::reserve PageReservation.h 107
0x2e882a7e
3 QV4::MemorySegment::MemorySegment qv4mm.cpp 123
0x2e882a7e
4 QV4::ChunkAllocator::allocate qv4mm.cpp 257
0x2e882a7e
5 QV4::BlockAllocator::allocate qv4mm.cpp 695
0x2e882e2d
6 QV4::MemoryManager::allocData qv4mm.cpp 920
0x2e8862d6
7 QV4::MemoryManager::allocManaged<QV4::CallContext>
qv4mm_p.h 223 0x2e916f93
8 QV4::ExecutionContext::newCallContext qv4context.cpp
69 0x2e916f93
9 QV4::ExecutionContext::call qv4context.cpp 269
0x2e91ac5b
10 QV4::ScriptFunction::call qv4functionobject.cpp 411 0x2e94512c
11 QV4::Object::call qv4object_p.h 445 0x2e9a9bf7
12 QV4::Runtime::method_callProperty qv4runtime.cpp 1104
0x2e9a9bf7
13 QV4::Moth::VME::run qv4vme_moth.cpp 600 0x2e99cb6b
14 QV4::Moth::VME::exec qv4vme_moth.cpp 976 0x2e99f630
15 QV4::ExecutionContext::call qv4context.cpp 274
0x2e91af16
16 QQmlJavaScriptExpression::evaluate qqmljavascriptexpression.cpp 225
0x2ea2535e
17 QQmlNonbindingBinding::doUpdate qqmlbinding.cpp 207
0x2eab6c70
18 QQmlBinding::update qqmlbinding.cpp 168 0x2ea2fc5f
19 QQmlBinding::expressionChanged qqmlbinding.cpp 484
0x2ea2fe05
20 QQmlJavaScriptExpressionGuard_callback qqmljavascriptexpression.cpp
490 0x2ea24e67
Crashes with the CRASH(); function/macro here:
void*OSAllocator::reserveUncommitted(size_tbytes,Usage,boolwritable,boolexecutable)
{
void*result=VirtualAlloc(0,bytes,MEM_RESERVE,protection(writable,executable));
if(!result)
CRASH();
returnresult;
}
* Qt 5.10.0 MinGW / 32bit Debug
* Windows Version 10.0.16299 Build 16299, 64 bit
* Qt Creator 4.2.1,
* Three Monitors.
--
http://www.classintouch.de - Tablet-Software für Lehrer
--- Begin Message ---
Hi,
I am experiencing problems while debugging my QML-based app. All the
following error messages do **not** appear when I just run (Ctrl+r),
they only do so in debug mode (F5).
[Symptom A]
When the Program window comes to front, I get:
onecore\com\combase\inc\comcataloghelpers.hpp(67)\combase.dll!746B8550:
(caller: 746B82E0) ReturnHr(1) tid(43f4) 80004002 Schnittstelle nicht
unterstützt
("No such interface supported") and
mincore\com\oleaut32\dispatch\ups.cpp(2125)\OLEAUT32.dll!73CA234F:
(caller: 73CA1EF1) ReturnHr(1) tid(2b70) 8002801D Bibliothek nicht
registriert.
("Library not registered", same again for ReturnHr(2)).
[Symptom B]
Also, interestingly, I can not see svg images when debugging. Fine when
just running.
[Symptom C]
Opening a FileDialog from QtQuick.Dialogs1.2 in debug mode, I get the
loads of errors (again: works in run mode) - and afterwards many crashes
that I cannot yet understand.
First is
onecoreuap\shell\windows.storage\regfldr.cpp(1239)\windows.storage.dll!74A1A719:
(caller: 74A186F0) ReturnHr(1) tid(2b70) 80004001 Nicht implementiert
("Not implemented"), then several of these:
onecoreuap\shell\windows.storage\kfapi\folderpathidlistcache.cpp(208)\windows.storage.dll!74A5B07C:
(caller: 74A5A36C) LogHr(1) tid(97c) 80070002 Das System kann die
angegebene Datei nicht finden.
("The system cannot find the file specified") After this, a specified
drive can't be found (multiple times),
onecoreuap\shell\lib\bindctx.cpp(128)\SHELL32.dll!757F0C37: (caller:
757EB0F0) ReturnHr(1) tid(97c) 80070057 Falscher Parameter.
("Wrong parameter") and
shell\comdlg32\fileopensave.cpp(14268)\comdlg32.dll!752CE4A3: (caller:
752D97BC) ReturnHr(1) tid(97c) 80004005 Unbekannter Fehler
CallContext:[\PickerModalLoop]
onecoreuap\shell\windows.storage\regfldr.cpp(1239)\windows.storage.dll!74A1A719:
(caller: 74A186F0) ReturnHr(29) tid(97c) 80004001 Nicht implementiert
("Unknown Error" and "Not implemented")
Are these symtoms related?
Is all this related to https://bugreports.qt.io/browse/QTBUG-63789?
Are there any solutions, workarounds or even ideas on how to get
debugging to work properly again?
Best regards,
Sebastian
P.S.:
* Qt 5.10.0 MinGW / 32bit Debug
* Windows Version 10.0.16299 Build 16299, 64 bit
* Qt Creator 4.2.1,
* Three Monitors.
--
http://www.classintouch.de - Tablet-Software für Lehrer
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