The code (and error messages) you are showing are from latex not from the
luatex engine.
so should be reported https://github.com/latex3/latex2e/issues not here
If you stress \newinsert that much, as documented in source2e.pdf
(ltplain.dtx)
it will shuffle some float box allocations around but it does look like it
does not
correctly trap the end condition. Other engines (even when they have e-tex
extended
registers) count down from 255 for \newinsert. so get to 0 without any
complication
around legacy use of 255. lualatex is counting down from a few thousand.
In practice latex doesn't use insert much (it only uses two inserts by
default) so apart from
test cases this seems unlikely to ever occur in practice but we should
probably fix.
At least I suspect a fix is needed, I haven't fully traced what your log is
showing yet.
David
On Wed, 5 Apr 2023 at 07:54, Martin Münch <martin.mue...@uni-bonn.de> wrote:
> May the file LuaInsert.tex consist of
>
>
> \documentclass{minimal}
> \makeatletter
> \newcommand{\stressInsert}[1]{%
> \@tempcnta=0\relax%
> \@whilenum\the\@tempcnta<#1\do%
> {\advance\@tempcnta +1\relax%
> \expandafter\newinsert\csname TestInsert\the\@tempcnta\endcsname%
> \message{insert \the\@tempcnta: \the\allocationnumber^^J}%
> }%
> }
> \makeatother
> \stressInsert{70000}
> \begin{document}
> \end{document}
>
>
> then
>
> > lualatex LuaInsert.tex
>
> creates LuaInsert.log, which also contains:
>
> This is LuaHBTeX, Version 1.16.0 (TeX Live 2023) (format=lualatex
> 2023.4.4)
> ...
> \TestInsert1=\insert199
> insert 1: 199
> \TestInsert2=\insert198
> insert 2: 198
> ...
> \TestInsert17=\insert183
> insert 17: 183
> [ *** 1st JUMP HERE *** ]
> \TestInsert18=\insert252
> insert 18: 252
> \TestInsert19=\insert251
> insert 19: 251
> ...
> \TestInsert68=\insert202
> insert 68: 202
> \TestInsert69=\insert201
> insert 69: 201
> [ *** 2nd JUMP HERE *** ]
> \TestInsert70=\insert65534
> insert 70: 65534
> \TestInsert71=\insert65533
> insert 71: 65533
> ...
> \TestInsert65350=\insert254
> insert 65350: 254
> \TestInsert65351=\insert253
> insert 65351: 253
> \TestInsert65352=\insert252 [ *** AGAIN?! ***]
> insert 65352: 252
> \TestInsert65353=\insert251 [ *** AGAIN?! ***]
> insert 65353: 251
> ...
> \TestInsert65368=\insert236 [ *** AGAIN?! ***]
> insert 65368: 236
> \TestInsert65369=\insert235 [ *** AGAIN?! ***]
> insert 65369: 235
> ! No room for a new \count .
> \ch@ck ...\else \errmessage {No room for a new #3}
> \fi
> l.12 \stressInsert{70000}
>
> ? x
>
> So, are \insert252 to \insert235 used twice?!
>
> And Lua does not even stop there because of "No room for a new insert",
> but because there is no room for a new \count! Otherwise more inserts
> would see double use?
> Should after \insert253 (!, not 235) the next \newinsert produce some
> error "No room for a new \insert"?
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> dev-luatex@ntg.nl
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>
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