26.01.0 Crashes at Startup on MacOS 26.2 "Tahoe"

[jIyajbe]

I am running MacOS 26.2 "Tahoe". I followed nathanqueijo's fix for the missing File | Save dialog issue. Although the fix works perfectly with wxmaxima 25.04, 26.01.0 has a new, different problem. Although the compile completes successfully, wxmaxima 26.01.0 crashes immediately upon startup. I tested by compiling against the MacOSX15.4.sdk (side note: there is no 15.5 directory on my computer), and also against the MacOSX26.2.sdk. I got the same result in both tests. Here is the top of the crash report:

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Translated Report (Full Report Below)

Process: wxmaxima [35212]
Path: /Applications/wxmaxima.app/Contents/MacOS/wxmaxima
Identifier: net.sf.wxMaxima
Version: 26.01.0 (26.01.0)
Code Type: X86-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition: net.sf.wxMaxima [23171]
User ID: 501

Date/Time: 2026-01-16 13:10:01.8533 +0000
Launch Time: 2026-01-16 13:09:58.8118 +0000
Hardware Model: MacBookPro16,1
OS Version: macOS 26.2 (25C56)
Release Type: User
Bridge OS Version: 10.2 (23P2048)

Crash Reporter Key: B31D8716-F6B3-1745-C8A3-4D1E9C1F045E
Incident Identifier: CDB414F2-9245-490F-8F49-A79511482FFD

Time Awake Since Boot: 640000 seconds

System Integrity Protection: enabled

Triggered by Thread: 0, Dispatch Queue: com.apple.main-thread

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Codes: 0x0000000000000001, 0x0000000000000000

Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11
Terminating Process: exc handler [35212]

VM Region Info: 0 is not in any region. Bytes before following region: 4494815232
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
UNUSED SPACE AT START
--->
__TEXT 10be97000-10c41e000 [ 5660K] r-x/r-x SM=COW /Applications/wxmaxima.app/Contents/MacOS/wxmaxima

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 wxmaxima 0x10be9c6d1 ArtProvider::GetImage(wxWindow*, wxString const&, int, unsigned char const*, unsigned long) + 705 (ArtProvider.cpp:68)
1 wxmaxima 0x10bf85b2d ToolBar::GetEvalBitmap(wxSize) + 93 (ToolBar.cpp:410)
2 wxmaxima 0x10c172d77 wxMaximaFrame::SetupCellMenu() + 567 (wxMaximaFrame.cpp:850)
3 wxmaxima 0x10c167d1c wxMaximaFrame::SetupMenu() + 108 (wxMaximaFrame.cpp:1984)
4 wxmaxima 0x10c161ddb wxMaximaFrame::wxMaximaFrame(wxWindow*, int, wxString const&, wxPoint const&, wxSize const&, long) + 1515 (wxMaximaFrame.cpp:72)
5 wxmaxima 0x10bff582d wxMaxima::wxMaxima(wxWindow*, int, wxString const&, wxString const&, wxString const&, wxPoint, wxSize) + 93 (wxMaxima.cpp:200)
6 wxmaxima 0x10c0fb5a4 wxMaxima::wxMaxima(wxWindow*, int, wxString const&, wxString const&, wxString const&, wxPoint, wxSize) + 84 (wxMaxima.cpp:203)
7 wxmaxima 0x10bfedcb6 MyApp::NewWindow(wxString const&, bool, bool, unsigned char*, unsigned long) + 1974 (main.cpp:535)
8 wxmaxima 0x10bfeb881 MyApp::OnInit() + 13041 (main.cpp:488)
9 libwx_osx_cocoau_core-3.2.0.3.0.dylib 0x10d7582e0 wxApp::CallOnInit() + 160
10 wxmaxima 0x10bfe7f6c CommonMain() + 28 (main.cpp:94)
11 wxmaxima 0x10bfe857e main + 78 (main.cpp:170)
12 dyld 0x7ff80cce9781 start + 3457

Thread 1:

Thread 2:

Thread 3:

Thread 4:

Thread 5:

Thread 6:

Thread 7:: com.apple.NSEventThread
0 libsystem_kernel.dylib 0x7ff80d07cb4e mach_msg2_trap + 10
1 libsystem_kernel.dylib 0x7ff80d08af4c mach_msg2_internal + 83
2 libsystem_kernel.dylib 0x7ff80d083ba3 mach_msg_overwrite + 574
3 libsystem_kernel.dylib 0x7ff80d07ce47 mach_msg + 19
4 CoreFoundation 0x7ff80d15f69f __CFRunLoopServiceMachPort + 145
5 CoreFoundation 0x7ff80d15e186 __CFRunLoopRun + 1354
6 CoreFoundation 0x7ff80d210830 _CFRunLoopRunSpecificWithOptions + 496
7 AppKit 0x7ff811051141 _NSEventThread + 158
8 libsystem_pthread.dylib 0x7ff80d0bfe4d _pthread_start + 115
9 libsystem_pthread.dylib 0x7ff80d0bb857 thread_start + 15

Thread 8:

Thread 9:

Thread 10:

Thread 11:

Thread 12:

Thread 13:

Thread 14:

Thread 15:

Thread 16:

Thread 17:

Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x000000010d398830 rbx: 0x00007f8e6c20e440 rcx: 0x0000000000000000 rdx: 0x0000000000058810
rdi: 0x0000000000000000 rsi: 0x000000010cb86200 rbp: 0x00007ff7b404eba0 rsp: 0x00007ff7b404ea50
r8: 0x0000000000000030 r9: 0xfffffffffffff000 r10: 0x00007f8e6c3a6000 r11: 0x00007f8e6c300000
r12: 0x00007ff84dc12718 r13: 0x00007ff7b4068b18 r14: 0x000000010dcd4fe0 r15: 0x00007ff84dc550a0
rip: 0x000000010be9c6d1 rfl: 0x0000000000010202 cr2: 0x0000000000000000

Logical CPU: 4
Error Code: 0x00000004 (no mapping for user data read)
Trap Number: 14

[daute]

Thanks for your report. Can you check, if the current development version works and the problem is solved now?

And if some icons/images are maybe very large/small now? The code I removed, was supposed to limit a 'scalefactor' only on MacOS, but I assume, that did not work anyways...

Regards, Wolfgang

[jIyajbe]

Will do, sometime tomorrow (Monday). Thanks for working on it quickly!

--Out of curiosity, what part of the crash report (if any) gave you the clue about what the problem might be?

[daute]

That was the line:
0 wxmaxima 0x10be9c6d1 ArtProvider::GetImage(wxWindow*, wxString const&, int, unsigned char const*, unsigned long) + 705 (ArtProvider.cpp:68)

There in line 68 we had some code (int scaleFactor = win->GetContentScaleFactor();) which was only for MacOS (#if defined __WXOSX__) - and maybe(!) that was causing the crash - the variable win is not set (properly) or something else.

Since that code was only for OSX, it is probably not necessary. On other operating systems it works without it.

But it is not easy to debug code for MacOS. We just see the result of the Github CI compile jobs, but if it crashes after a successful compilation or if something is not displayed properly, some menus are not working, ... not.

Best regards, Wolfgang