Repeatable crash on MacOS Tahoe #3
Description
As demonstrated during the workshop I was experiencing a crash with the externals including in the repo. Max 9.1.2 on MacOS Tahoe 26.2
A reliable way to reproduce the crash for me was to open spt-Overview.maxpat, click to open the "Rhythm Makers" patch and then enable the audio engine. (log attached below)
Recompiling the externals on my machine seems to have eradicated the crashes successfully
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Translated Report (Full Report Below)
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Process: Max [7598]
Path: /Applications/Max.app/Contents/MacOS/Max
Identifier: com.cycling74.Max
Version: 9.1.2 (07b9c4cbe57) (9.1.2)
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition: com.cycling74.Max [36439]
User ID: 501
Date/Time: 2026-01-19 17:35:22.0350 +0000
Launch Time: 2026-01-19 17:34:57.9583 +0000
Hardware Model: Mac14,3
OS Version: macOS 26.2 (25C56)
Release Type: User
[...]
System Integrity Protection: enabled
Triggered by Thread: 0 JUCE Message Thread, Dispatch Queue: com.apple.main-thread
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x000000018a8d6b5c
Termination Reason: Namespace SIGNAL, Code 5, Trace/BPT trap: 5
Terminating Process: exc handler [7598]
Application Specific Information:
BUG IN CLIENT OF LIBMALLOC: memory corruption of free block
Abort Cause 34977272320
Thread 0 Crashed:: JUCE Message Thread Dispatch queue: com.apple.main-thread
0 libsystem_malloc.dylib 0x18a8d6b5c _xzm_xzone_malloc_freelist_outlined + 864
1 Max 0x104a156d0 atomarray_realloc_nolock + 304
2 Max 0x104a1478c atomarray_clone_to_existing + 276
3 Max 0x104a13bc0 atomarray_clone + 104
4 Max 0x104a610d8 dictionary_clone_cb_imp + 324
5 Max 0x104a61194 dictionary_clone_cb + 16
6 Max 0x104a53bac linklist_funall_imp + 376
7 Max 0x104a5db7c dictionary_clone_to_existing + 288
8 Max 0x104a5d33c dictionary_clone + 56
9 Max 0x104a610d8 dictionary_clone_cb_imp + 324
10 Max 0x104a61194 dictionary_clone_cb + 16
11 Max 0x104a53bac linklist_funall_imp + 376
12 Max 0x104a5db7c dictionary_clone_to_existing + 288
13 Max 0x104a5d33c dictionary_clone + 56
14 Max 0x104a610d8 dictionary_clone_cb_imp + 324
15 Max 0x104a61194 dictionary_clone_cb + 16
16 Max 0x104a53bac linklist_funall_imp + 376
17 Max 0x104a5db7c dictionary_clone_to_existing + 288
18 Max 0x104a5d33c dictionary_clone + 56
19 Max 0x104971ca0 packages_cloneinfo + 56
20 Max 0x104971acc tutorials_enumerate + 76
21 Max 0x104922588 jmenu_enumerate + 792
22 Max 0x104a53bac linklist_funall_imp + 376
23 Max 0x1049230dc jmenu_command_invalidate + 256
24 Max 0x10496f31c max_updatecommand + 124
25 Max 0x104922db8 jmenu_updatecommand + 524
26 Max 0x104a53bac linklist_funall_imp + 376
27 Max 0x10496c654 interface_setmenus_forwindow + 508
28 Max 0x10496ce64 max_updatemenu + 104
29 Max 0x104788668 MaxMenuModel::getMenuForIndex(int, juce::String const&) + 108
30 Max 0x104f2f914 juce::JuceMainMenuHandler::menuBarItemsChanged(juce::MenuBarModel*) + 408
31 Max 0x104ee8b28 juce::MenuBarModel::handleAsyncUpdate() + 320
32 Max 0x104788544 MaxMenuModel::handleAsyncUpdate() + 48
33 Max 0x104e19d74 juce::AsyncUpdater::AsyncUpdaterMessage::messageCallback() + 92
34 Max 0x104e1b92c juce::MessageQueue::runLoopCallback() + 352
35 CoreFoundation 0x18ab509f8 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
36 CoreFoundation 0x18ab5098c __CFRunLoopDoSource0 + 172
37 CoreFoundation 0x18ab506f8 __CFRunLoopDoSources0 + 232
38 CoreFoundation 0x18ab4f388 __CFRunLoopRun + 820
39 CoreFoundation 0x18ac09e34 _CFRunLoopRunSpecificWithOptions + 532
40 HIToolbox 0x19763f790 RunCurrentEventLoopInMode + 316
41 HIToolbox 0x197642ab8 ReceiveNextEventCommon + 488
42 HIToolbox 0x1977ccb64 _BlockUntilNextEventMatchingListInMode + 48
43 AppKit 0x18f468b5c _DPSBlockUntilNextEventMatchingListInMode + 236
44 AppKit 0x18ef62e48 _DPSNextEvent + 588
45 AppKit 0x18fa2dd0c -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 688
46 AppKit 0x18fa2da18 -[NSApplication(NSEventRouting) nextEventMatchingMask:untilDate:inMode:dequeue:] + 72
47 AppKit 0x18ef5b780 -[NSApplication run] + 368
48 Max 0x104e153a8 juce::JUCEApplicationBase::main() + 212
49 Max 0x104e152b4 juce::JUCEApplicationBase::main(int, char const**) + 88
50 dyld 0x18a6e9d54 start + 7184