[Octave-bug-tracker] [bug #65468] fatal: caught signal Trace/BPT trap: 5 -- stopping myself...

[Marius Schamschula]

Follow-up Comment #4, bug #65468 (group octave):

Indeed, the same error occurs when I rebuild 8.4.0 against the current
toolchain.

When using __debug_octave__ I get

marius@Mira ~ % lldb -p 69398
(lldb) process attach --pid 69398
Process 69398 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
    frame #0: 0x000000019ffb61cc libsystem_kernel.dylib`__pselect + 8
libsystem_kernel.dylib`:
->  0x19ffb61cc <+8>:  b.lo   0x19ffb61ec               ; <+40>
    0x19ffb61d0 <+12>: pacibsp 
    0x19ffb61d4 <+16>: stp    x29, x30, [sp, #-0x10]!
    0x19ffb61d8 <+20>: mov    x29, sp
Target 0: (octave-cli-8.4.0) stopped.
Executable module set to "/opt/local/bin/octave-cli-8.4.0".
Architecture set to: arm64-apple-macosx-.
(lldb) catch signal 5
error: 'catch' is not a valid command.
(lldb) continue
Process 69398 resuming
Process 69398 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BREAKPOINT
(code=1, subcode=0x1ab956b24)
    frame #0: 0x00000001ab956b24 libunwind.dylib`_Unwind_GetIP + 244
libunwind.dylib`:
->  0x1ab956b24 <+244>: brk    #0xc471
    0x1ab956b28 <+248>: mov    x0, x16
    0x1ab956b2c <+252>: ldp    x29, x30, [sp, #0x10]
    0x1ab956b30 <+256>: ldp    x20, x19, [sp], #0x20
Target 0: (octave-cli-8.4.0) stopped.


As I had suspected, the issue seems to be libunwind.


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