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code::blocks hangs at startup
stahta01:
--- Quote from: Miguel Gimenez on September 25, 2025, 12:05:48 pm ---wxSmith is the only plugin still using PNG, every other plugins are now using SVG. Maybe glycin has problems loading these PNG, but booting in safe mode should work.
--- End quote ---
Thank you for that info; I have been having issues building/runtime with wxWidgets 3.3.x and the wxSmith plugin under MSys2 MINGW64 and now I have a possible cause to look into. wxWidgets 3.2.8 was working okay.
Edit: The issue is only seen when three things is true: wxWidgets 3.3.x, MINGW64, and wxSmith plugin is built; UCRT64 and MINGW32 do not have the problem for example. I can now see if an wxWidgets sample has the problem that uses PNG images.
Tim S.
ollydbg:
I don't see the hang issue when I build the C::B under the msys2/mingw64, but I see a crash when C::B load a wxWidgets project, and after I try to open a wxs wxsmith file.
See the call stack here:
--- Code: ---[debug]> frame 4
[debug]#4 0x00007ff8ad97d270 in wxPGProperty::GetValueAsString (this=0x11daa950, flags=0) at F:\code\wxWidgets-3.3.1\include\wx\propgrid\property.h:1427
[debug]F:\code\wxWidgets-3.3.1\include\wx\propgrid\property.h:1427:53089:beg:0x7ff8ad97d270
[debug]>>>>>>cb_gdb:
#4 0x00007ff8ad97d270 in wxPGProperty::GetValueAsString (this=0x11daa950, flags=0) at F:\code\wxWidgets-3.3.1\include\wx\propgrid\property.h:1427
F:\code\wxWidgets-3.3.1\include\wx\propgrid\property.h:1427:53089:beg:0x7ff8ad97d270
At F:\code\wxWidgets-3.3.1\include\wx\propgrid\property.h:1427
[debug]> show language
[debug]The current source language is "auto; currently c++".
[debug]>>>>>>cb_gdb:
[debug]> bt 30
[debug]#0 0x00007ff8d4ca71b1 in wxDefaultAssertHandler(wxString const&, int, wxString const&, wxString const&, wxString const&) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#1 0x00007ff8d4ca49ec in wxOnAssert(char const*, int, char const*, char const*, wxString const&) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#2 0x00007ff8d534b68e in wxPGProperty::ValueToStringWithCheck(wxVariant&, wxPGPropValFormatFlags) const () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#3 0x00007ff8d534f73e in wxPGProperty::GetValueAsString(wxPGPropValFormatFlags) const () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#4 0x00007ff8ad97d270 in wxPGProperty::GetValueAsString (this=0x11daa950, flags=0) at F:\code\wxWidgets-3.3.1\include\wx\propgrid\property.h:1427
[debug]#5 0x00007ff8d534c06e in wxPGProperty::GetValueAsStringWithCheck(wxPGPropValFormatFlags) const () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#6 0x00007ff8d53521ca in wxPGProperty::GetDisplayInfo(unsigned int, int, int, wxString*, wxPGCell*) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#7 0x00007ff8d53545b2 in wxPGDefaultRenderer::Render(wxDC&, wxRect const&, wxPropertyGrid const*, wxPGProperty*, int, int, int) const () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#8 0x00007ff8d535de13 in wxPropertyGrid::DoDrawItems(wxDC&, wxRect const*) const () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#9 0x00007ff8d535efae in wxPropertyGrid::DrawItems(wxDC&, unsigned int, unsigned int, wxRect const*) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#10 0x00007ff8d536bf78 in wxPropertyGrid::OnPaint(wxPaintEvent&) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#11 0x00007ff8d4ca3467 in wxAppConsoleBase::CallEventHandler(wxEvtHandler*, wxEventFunctor&, wxEvent&) const () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#12 0x00007ff8d4deff55 in wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#13 0x00007ff8d4df28b3 in wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#14 0x00007ff8d4df2916 in wxEvtHandler::TryHereOnly(wxEvent&) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#15 0x00007ff8d4df2983 in wxEvtHandler::ProcessEventLocally(wxEvent&) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#16 0x00007ff8d4df2a61 in wxEvtHandler::ProcessEvent(wxEvent&) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#17 0x00007ff8d512453f in wxScrollHelperEvtHandler::ProcessEvent(wxEvent&) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#18 0x00007ff8d4df0262 in wxEvtHandler::SafelyProcessEvent(wxEvent&) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#19 0x00007ff8d4ed7dbb in wxWindow::HandlePaint() () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#20 0x00007ff8d4eda158 in wxWindow::MSWHandleMessage(long long*, unsigned int, unsigned long long, long long) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#21 0x00007ff8d4ec573c in wxWindow::MSWWindowProc(unsigned int, unsigned long long, long long) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#22 0x00007ff8d58f03ac in wxScrolled<wxControl>::MSWWindowProc(unsigned int, unsigned long long, long long) () from F:\code\wxWidgets-3.3.1\lib\gcc_dll\wxmsw331u_gcc_custom.dll
[debug]#23 0x00007ff963c1ef5c in USER32!CallWindowProcW () from C:\WINDOWS\System32\user32.dll
[debug]#24 0x00007ff963c1e8cc in USER32!DispatchMessageW () from C:\WINDOWS\System32\user32.dll
[debug]#25 0x00007ff963c310c3 in USER32!SendMessageTimeoutW () from C:\WINDOWS\System32\user32.dll
[debug]#26 0x00007ff9657f1374 in ntdll!KiUserCallbackDispatcher () from C:\WINDOWS\SYSTEM32\ntdll.dll
[debug]#27 0x00007ff9634a2be4 in win32u!NtUserRealInternalGetMessage () from C:\WINDOWS\System32\win32u.dll
[debug]#28 0x00007ff934b9d559 in GetMessageExA () from C:\WINDOWS\SYSTEM32\duser.dll
[debug]#29 0x00007ff934b9d348 in GetMessageExA () from C:\WINDOWS\SYSTEM32\duser.dll
[debug](More stack frames follow...)
--- End code ---
Strange that it does not contains function calls from C::B's source code, maybe, "More stack frames follow...)
EDIT:
In the crash, I see that:
--- Code: --- virtual wxString GetValueAsString(int flags) const
{
m_oldGetValueAsString = true;
return GetValueAsString(static_cast<wxPGPropValFormatFlags>(flags));
}
--- End code ---
the flags is 0.
blauzahn:
When analyzing cb trunk with scan-build the list of issues contains several with wxSmith, e.g. "Dereference of null pointer".
https://clang.llvm.org/docs/analyzer/user-docs/CommandLineUsage.html
Btw: Today, glycin got two updates on Arch Linux. Starting cb with wxSmith zip-files installed still hangs.
cet_ivan:
I encountered the same problem yesterday, on Arch with most packages up to date, but with an old version of KDE.
My current workaround is to install gdk-pixbuf2 version 2.42.12-2, instead of the latest version, 2.44.2-1. The latest version introduced glycin as a dependency.
Since glycin performs some kind of sandboxing for image loading/decoding and that involves starting additional processes and interprocess communication, there seems to be a bug with IPC which causes the hang.
This is not a permanent solution and I am not sure whether this can cause problems for other applications using gdk-pixbuf2, but the two versions seem binary compatible, and so far all the apps which require gdk-pixbuf2 seem to work properly. Another way might be to rebuild the latest gdk-pixbuf2 without glycin as its dependency (i.e. create a custom PKGBUILD), but I haven't tried that.
JorgenBest:
on 30/9/25 gdk-pixbuf2 upgraded in Arch Linux to 2.44.3-1, but CodeBlocks still hangs on wxSmith plugin
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