Re: [Dev-luatex] segfault on example in manual

On Tue, Apr 2, 2019 at 9:48 PM Reinhard Kotucha wrote:

On 2019-04-02 at 08:50:23 +0200, luigi scarso wrote:

...

On Tue, Apr 2, 2019 at 7:18 AM luigi scarso wrote:

On Tue, Apr 2, 2019 at 12:23 AM Reinhard Kotucha < reinhard.kotucha@web.de> wrote:

Hi, when I run the example on page 261/262 of the LuaTeX Manual and the input file ("foo.pdf" in the example) doesn't exist, I get

Segmentation fault (core dumped)

on x86_64-linux.

This is ok $ luatex --fmt=luatex-plain "test-plain.tex"

Hi Luigi, this works here too. I get:

This is LuaTeX, Version 1.10.0 (TeX Live 2019) restricted system commands enabled. (./testpdfscanner.tex warning (pdfe lib): no valid pdf file 'foo.pdf' ) (see the transcript file for additional information) warning (pdf backend): no pages of output. Transcript written on testpdfscanner.log.

I suppose that texlua crashes when trying to print the warning, see gdb output below. What I don't understand is is why luatex and texlua behave differently here.

because the print of the warning requires a TeX state. texlua has only a Lua state. -- luigi