C::B reports wxRecursionGuards error when loading a cbp project

[ollydbg]

I just build C::B against wx 3.3.1, and the result C::B report many error messages when I load a project, the message looks like below:

Code

[Window Title]
wxWidgets Debug Alert

[Main Instruction]
A debugging check in this application has failed.

[Content]
..\..\include/wx/recguard.h(36): assert "m_flag > 0" failed in ~wxRecursionGuard(): unbalanced wxRecursionGuards!?

[ ] Don't show this dialog again  [Stop] [Continue]

Any ideas which cause this issue?


EDIT:

Here is the crash report from the RPT file:

Code

codeblocks.exe caused a Breakpoint at location 00007FF94B7822BA in module wxmsw331u_gcc_custom.dll.

AddrPC           Params
00007FF94B7822BA 00000260EFC92E70 0000000000000000 0000000000000000  wxmsw331u_gcc_custom.dll!wxEvtHandler::SearchDynamicEventTable+0x12a
00007FF94B7828FB 0000000000000001 00000260F4764260 0000009E3CBFF750  wxmsw331u_gcc_custom.dll!wxEvtHandler::TryHereOnly+0x2b
00007FF94B782983 00000260F4763FD0 0000009E3CBFF6F0 00000260F4764260  wxmsw331u_gcc_custom.dll!wxEvtHandler::ProcessEventLocally+0x33
00007FF94B782A61 0000000000011A38 0000000000000000 0000000000000000  wxmsw331u_gcc_custom.dll!wxEvtHandler::ProcessEvent+0xc1
00007FF94BA75018 0000009E3CBFF8E0 0000000000000001 00000260F4762440  wxmsw331u_gcc_custom.dll!wxWindowBase::TryAfter+0x58
00007FF94BA557DC 00007FF94C8F48E0 00007FF900000002 00000260F00FF3D0  wxmsw331u_gcc_custom.dll!wxToolBarBase::UpdateWindowUI+0x19c
00007FF94BA68217 0000000000000000 0000000000000000 0000000000000000  wxmsw331u_gcc_custom.dll!wxWindowBase::SendIdleEvents+0x17
00007FF94BA6824F 0000000000000000 0000000000000000 0000000000000000  wxmsw331u_gcc_custom.dll!wxWindowBase::SendIdleEvents+0x4f
00007FF94B969B04 00000260F4810D60 00000260F4810D60 0000000000000000  wxmsw331u_gcc_custom.dll!wxAppBase::ProcessIdle+0xc4
00007FF94B669CB3 0000000000000028 00007FF94C8C4150 0000009E3CBFFB40  wxmsw331u_gcc_custom.dll!wxEventLoopManual::DoRunLoop+0x83
00007FF94B669DC8 00000260EF70B960 00000260F4810D60 0000000000000000  wxmsw331u_gcc_custom.dll!wxEventLoopManual::DoRun+0x38
00007FF94B6698D8 0000000000000048 00007FF9BCFDC9D0 0000009E3CBFFAC0  wxmsw331u_gcc_custom.dll!wxEventLoopBase::Run+0x58
00007FF94B63619F 00000260EF75D0C0 00000260EF7128B0 00007FF94D0D95C8  wxmsw331u_gcc_custom.dll!wxAppConsoleBase::MainLoop+0x7f
00007FF62CCA62CA 00000260EF70B960 0000000000000000 0000000000000000  codeblocks.exe!0x62ca
00007FF94B6A879E FFFFFFFFFFFFFFFF 0000000000000008 0000000000000048  wxmsw331u_gcc_custom.dll!wxInitialize+0x12e
00007FF62CCA2A97 00007FF62CCA0000 0000000000000000 00000260EDC8365C  codeblocks.exe!0x2a97
00007FF62CCA12E9 0000000000000000 0000000000000000 0000000000000000  codeblocks.exe!0x12e9
00007FF62CCA13D6 0000000000000000 0000000000000000 0000000000000000  codeblocks.exe!0x13d6
00007FF9BCFB7374 0000000000000000 0000000000000000 0000000000000000  KERNEL32.DLL!BaseThreadInitThunk+0x14
00007FF9BEBBCC91 0000000000000000 0000000000000000 0000000000000000  ntdll.dll!RtlUserThreadStart+0x21

[stahta01]

I did not see the problem.

Code

Name                    : Code::Blocks
Version                 : svn-r13746
SDK Version             : 2.25.0
Scintilla Version       : 3.7.5
OS                      : Windows 10 (build 19045), 64-bit edition
wxWidgets Library (wxMSW port)
Version 3.3.1 (Unicode: wchar_t, debug level: 1),
compiled at Oct  9 2025 07:51:44

Under MSys2 UCRT64 with Code::Blocks in dark mode and using multilib wxWidgets.
Edit: Code::Blocks built using configure/make build under MSys2 UCRT64

Tim S.

[blauzahn]

It is the Clangd_client that has or triggers this bug at least on Linux. After a while it crashes cb. I have seen it on numerous occasions.

That's why I usually leave it disabled. I enable is only sporadically to use its hints analogue to clang-tidy or IWYU and immediately
disable it thereafter. Please be aware that the IWYU function has many false positives. Those you can silence with // IWYU pragma: keep

[ollydbg]

I'm under Windows 10 64bit system.

I never see this wxRecursionGuards error message before when I used C::B(built with wx 3.2.x) when using clangd-client.

For C::B(built with wx 3.3.x), it is hard to reproduce the error again. 

[blauzahn]

I can reproduce the error with wx 3.3.2 on Linux.

The analysers scan-build or cppcheck show several issues with Clangd_client.