Hi Hans,
Someone posted on the tlbuild mailing list that LuaMetaTeX segfaults
whenever making the ConTeXt format on OpenBSD. I'm all out of ideas for
how to fix this, so hopefully you have some suggestions? The original
thread started at
https://tug.org/pipermail/tlbuild/2025q1/005651.html
Thanks,
-- Max
-------- Forwarded Message --------
From: Robert Alessi <ale...@robertalessi.net>
To: Max Chernoff <t...@maxchernoff.ca>
Cc: tlbu...@tug.org
Subject: Re: [tlbuild] TL25 rebuild please
Date: 2025-03-06 12:15:08 AM
> Hi Max,
>
> On Wed, Mar 05, 2025 at 01:00:57AM -0700, Max Chernoff wrote:
> > folder, you can build a debug version with:
> >
> > $ export CFLAGS='-ggdb3 -O0' CXXFLAGS='-ggdb3 -O0' LDFLAGS='-ggdb3'
> > $ sed -i '/-O3/d' CMakeLists.txt
> > $ sed -i 's/"-s"/""/' CMakeLists.txt
> > $ sed -i '/STRIP/d' cmake/luametatex.cmake
> > $ mkdir debug/ && cd debug/
> > $ cmake -DCMAKE_BUILD_TYPE=Debug -DLMT_PERMIT_LUA_LIBRARIES=yes ..
>
> At this point I got this CMake warning:
>
> CMake Warning:
> Manually-specified variables were not used by the project:
>
> LMT_PERMIT_LUA_LIBRARIES
>
> > $ cmake --build . --parallel 16
>
> Then the build process succeeded.
>
> >
> > The command to manually build a format is
> >
> > $ luametatex --ini --lua=$(kpsewhich luat-cod.lmt) $(kpsewhich
> > cont-en.mkxl)
> >
> > Since you compiled with clang, I guess you'll probably use lldb, but
> > with GDB and an intentionally-broken binary, this is what I get:
> >
> > $ gdb --args luametatex --ini --lua=$(kpsewhich luat-cod.lmt)
> > $(kpsewhich cont-en.mkxl)
>
> Then I copied luametatex to my TL bin dir and I ran:
>
> $ lldb --arch x86_64 -- luametatex --ini --lua=$(kpsewhich luat-cod.lmt)
> $(kpsewhich cont-en.mkxl)
>
> Here is what I got:
>
> (lldb) target create --arch=x86_64 "luametatex"
> Current executable set to '/usr/local/texlive/2025/bin/custom/luametatex'
> (x86_64).
> (lldb) settings set -- target.run-args "--ini"
> "--lua=/usr/local/texlive/2025/texmf-dist/tex/context/base/mkxl/luat-cod.lmt"
> "/usr/local/texlive/2025/texmf-dist/tex/context/base/mkxl/cont-en.mkxl"
> (lldb) r
> Process 28175 launched: '/usr/local/texlive/2025/bin/custom/luametatex'
> (x86_64)
> This is LuaMetaTeX, Version 2.11.07 initex
> (/usr/local/texlive/2025/texmf-dist/tex/context/base/mkxl/cont-en.mkxl(context.mkxl(syst-ini.mkxl)(norm-ctx.mkxl)(syst-pln.mkxl)(luat-cod.mkxl<+
> /usr/local/texlive/2025/texmf-dist/tex/context/base/mkxl
> [...]
> open source > level 1, order 35, name 'core-ini.mkxl'
> loading > ConTeXt Core Macros / Additional Initialization
> close source > level 1, order 35, name 'core-ini.mkxl'
> open source > level 1, order 36, name 'core-env.mkxl'
> loading > ConTeXt Core Macros / Environments
> Process 28175 stopped
> * thread #1, stop reason = signal SIGSEGV
> frame #0: 0x000009667aa8c9d8 luametatex`texlib_aux_checked_register
> [inlined] texlib_aux_valid_register_index(L=0x000009691de9f708, slot=1,
> cmd=<unavailable>, base=<unavailable>, max=65535, constant_cmd=<unavailable>)
> at lmttexlib.c:1277:74
> 1274 }
> 1275 if (index >= 0 && index <= max) {
> 1276 return index;
> -> 1277 } else if (index < (eqtb_size + lmt_hash_state.hash_data.ptr + 1)
> && eq_type(index) == constant_cmd) {
>
> ^
> 1278 return index;
> 1279 } else {
> 1280 return -1;
> (lldb) q
> Quitting LLDB will kill one or more processes. Do you really want to proceed:
> [Y/n] Y
>
> Thanks again,
>
> -- Robert
>
> >
> > Thanks,
> > -- Max
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