ebook-viewer crashes when building calibre on Windows

[Jasonz]

After setting the environment variable CALIBRE_DEVELOP_FROM for building calibre on Windows, ebook-viewer crashes on starting.

[Jasonz]

$ calibre-debug -w
QPA platform: windows
devicePixelRatio: 1.25
logicalDpi: 96.0 x 96.0
physicalDpi: 113.41395348837209 x 113.12164948453608
ApplicationPaletteChange event ignored
Using calibre Qt style: True
ApplicationPaletteChange event received
qt.webenginecontext:

GL Type: desktop
Surface Type: OpenGL
Surface Profile: CompatibilityProfile
Surface Version: 4.6
QSG RHI Backend: OpenGL
Using Supported QSG Backend: yes
Using Software Dynamic GL: no
Using Multithreaded OpenGL: yes

Init Parameters:
* application-name calibre
* browser-subprocess-path B:\Programs\Calibre Portable\Calibre\app\bin\QtWebEngineProcess.exe
* create-default-gl-context
* disable-es3-gl-context
* disable-features ConsolidatedMovementXY,InstalledApp,BackgroundFetc h,WebOTP,WebPayments,WebUSB,PictureInPicture
* disable-speech-api
* enable-features NetworkServiceInProcess,TracingServiceInProcess
* enable-threaded-compositing
* in-process-gpu
* use-gl desktop

[9140:2012:0927/133225.982:ERROR:tcp_socket_win.cc(354)] bind() returned an error: ͨ��ÿ���׽�
�ֵ�ַ(Э��/�����ַ/�˿�)ֻ����ʹ��һ�Ρ� (0x2740)
[9140:2012:0927/133225.993:ERROR:devtools_http_handler.cc(298)] Cannot start http server for devtools.
Compiling viewer code...

[kovidgoyal]

Something is preventing Qt webengine from opening a socket for its developer tools. Try disabling your antivirus/add an exception for QtWebEngineProcess.exe to it

[Jasonz]

[9140:2012:0927/133225.982:ERROR:tcp_socket_win.cc(354)] bind() returned an error: ͨ��ÿ���׽�
�ֵ�ַ(Э��/�����ַ/�˿�)ֻ����ʹ��һ�Ρ� (0x2740)
[9140:2012:0927/133225.993:ERROR:devtools_http_handler.cc(298)] Cannot start http server for devtools.

This is resolved after QTWEBENGINE_REMOTE_DEBUGGING is removed. But ebook-viewer still crashes:

QPA platform: windows
devicePixelRatio: 1.25
logicalDpi: 96.0 x 96.0
physicalDpi: 113.41395348837209 x 113.12164948453608
ApplicationPaletteChange event ignored
Using calibre Qt style: True
ApplicationPaletteChange event received
qt.webenginecontext:

GL Type: desktop
Surface Type: OpenGL
Surface Profile: CompatibilityProfile
Surface Version: 4.6
QSG RHI Backend: OpenGL
Using Supported QSG Backend: yes
Using Software Dynamic GL: no
Using Multithreaded OpenGL: yes

Init Parameters:
* application-name calibre
* browser-subprocess-path B:\Programs\Calibre Portable\Calibre\app\bin\QtWebEngineProcess.exe
* create-default-gl-context
* disable-es3-gl-context
* disable-features ConsolidatedMovementXY,InstalledApp,BackgroundFetc h,WebOTP,WebPayments,WebUSB,PictureInPicture
* disable-speech-api
* enable-features NetworkServiceInProcess,TracingServiceInProcess
* enable-threaded-compositing
* in-process-gpu
* use-gl desktop

Compiling viewer code...

[Jasonz]

Event Viewer

- System
- Provider
[ Name] Application Error
[ Guid] {a0e9b465-b939-57d7-b27d-95d8e925ff57}
EventID 1000
Version 0
Level 2
Task 100
Opcode 0
Keywords 0x8000000000000000
- TimeCreated
[ SystemTime] 2022-09-27T07:02:36.1991422Z
EventRecordID 52233
Correlation
- Execution
[ ProcessID] 23100
[ ThreadID] 9764
Channel Application
Computer
- Security
[ UserID]

- EventData

AppName calibre-debug.exe
AppVersion 6.5.0.0
AppTimeStamp 6323d9ec
ModuleName Qt6WebEngineCore.dll
ModuleVersion 6.3.1.0
ModuleTimeStamp 62b5ee1e
ExceptionCode c0000005
FaultingOffset 00000000002189ae
ProcessId 0x2b14
ProcessCreationTime 0x1d8d23f163d86c0
AppPath B:\Programs\Calibre Portable\Calibre\calibre-debug.exe
ModulePath B:\Programs\Calibre Portable\Calibre\app\bin\Qt6WebEngineCore.dll
IntegratorReportId e09395c5-3718-45e7-be26-da322e07768f
PackageFullName
PackageRelativeAppId

[kovidgoyal]

webengine is used to compile the rapydscript code, presumably something on your machine is interfering with it. Usual suspects are antivirus/firewall/etc. etc.

[Jasonz]

I have exited all antivirus/firewall softwares，but still crash.
Crash occurs at calibre/gui2/viewer/main.py
def run_gui(app, opts, args, internal_book_data, listener=None):
...
app.exec()
qapplication exec() crashes

[Jasonz]

I tried it on a clean Win11/Win10 VM, and the ebook-viewer still crashed after setting CALIBRE_DEVELOP_FROM and turning off Windows Security Center, but it worked fine on Ubuntu VM, it was weird.