[luatex] segfault with luatex id 7509

[luigi scarso]

On Mon, Oct 3, 2022 at 6:53 PM Henri Menke via luatex <luatex at tug.org>
wrote:

> On Mon, 2022-10-03 at 18:02 +0200, luigi scarso wrote:
> > On Mon, Oct 3, 2022 at 5:52 PM Werner LEMBERG <wl at gnu.org> wrote:
> >
> > > > > Please unpack the attached tarball and call `./zzz.sh`.  On my
> > > > > openSUSE box using a current SVN version of TeXLive, this
> > > > > crashes
> > > > > with a segfault.
> > > >
> > > > confirmed, I will check it this evening.
> > >
> > > Could you find the cause of the problem?  For backwards
> > > compatibility
> > > I'm interested in a work-around...
> > >
> > >
> > At the moment your code here works as with luajittex
> > and also luatex with the luatex-plain seems to be ok.
> > $> mtxrun --script plain notation.texi
> > (I have to add @bye to the end of notation.texi)
> >
> > Use
> > $> mtxrun --script plain --make
> > to build the luatex-plain format.
> >
>
> I was also able to reproduce the issue only on the first run. When I
> observed the segfault, I wanted to run it again with a debugger
> attached but any subsequent run did not expose the issue.  So my first
> guess is that this has to do with on-the-fly creation of font maps,
> which---once created---are reused and therefore it doesn't fail the
> second time. If I find the time I'll try again in a containerized
> environment where I can easily restart from a clean slate.
>


I can reproduce it on almost every run with gdb, but I always use a -g -O0
binary for testing (i.e. build --debug) .
-- 
luigi
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