Pandoc 2.0.6+ crashes on Windows 7 when a Lua Filter is used.

[RobertZenz]

Pandoc 2.0.6/2.1+ are crashing on Windows 7 when a Lua Filter is used.

As test case is used the following:

pandoc.exe --from=markdown --to=html --lua-filter=filter.lua test.markdown

test.markdown:

Introduction
============

Test

filter.lua:

return {
    { Link = function(element)
        return element
    end }
}

When invoked with the above command, Pandoc crashes and Windows reports that Pandoc has stopped working. When the Lua filter is ommitted:

pandoc.exe --from=markdown --to=html test.markdown

Pandoc does not crash.

I could reproduce this on another Windows 7 machine, however, it works correctly on Windows 10. Pandoc 2.0.5 does not crash when used with Lua filters. The ZIP packaged version (from the releases page) has been used for all tests.

This has been reported on the mailing list.

[mb21]

Wondering whether this is still the case with pandoc 2.1.1 ?

[robinerd]

I'm having the same issue, running Windows 7 and pandoc 2.1.2

test.lua:

return {
  {
    Str = function (elem)
      if elem.text == "{{helloworld}}" then
        return pandoc.Emph {pandoc.Str "Hello, World"}
      else
        return elem
      end
    end,
  }
}

Running from command line:
C:/Devtools/Pandoc/pandoc.exe -f markdown -t docbook --lua-filter test.lua myfile.md

Please let me know if more info is needed for fault finding.

[RobertZenz]

@mb21 Freshly downloaded 2.1.2 crashes as described above.

[mb21]

Can you post the exact output? and exact windows version?

Maybe you could also try the commands listed in #4283 and see whether they crash (and if so with what output/exit code)?

[robinerd]

Here are some more details.

$ C:/Devtools/Pandoc/pandoc.exe -v
pandoc.exe 2.1.2
Compiled with pandoc-types 1.17.3, texmath 0.10.1.1, skylighting 0.6
Default user data directory: C:\Users\a273094\AppData\Roaming\pandoc
Copyright (C) 2006-2018 John MacFarlane
Web:  http://pandoc.org
This is free software; see the source for copying conditions.
There is no warranty, not even for merchantability or fitness
for a particular purpose.

System Info
OS Name: Microsoft Windows 7 Enterprise
Version: 6.1.7601 Service Pack 1 Build 7601
System Type: x64-based PC
Processor: Intel(R) Core(TM) i7-4810MQ CPU @ 2.80GHz, 2801 Mhz, 4 Core(s), 8 Logical Processor(s)
Installed Physical Memory (RAM): 16,0 GB

Running the same command as before again. It produces no output, and I get a "Pandoc.exe has stopped working" dialogue from windows, almost immediately.

The pandoc -h command produces the help text below and then crashes with the same dialogue.
(see full output on https://pastebin.com/j2YJ7cXg)

[RobertZenz]

There is no output of different, I'm afraid.

pandoc --help

Crashes after printing the complete help text, curiously --version does not.

pandoc --from=lua --to=html test.markdown

Does convert a simple test file (like the one above) just fine (prints the HTML to the stdout). Adding a Lua filter (even an empty Lua file) does crash the command (prints nothing).

Running Pandoc from the Windows CMD simply gives the "has stopped working" dialog, running it from Bash (Git Bash) gives a "Segmentation fault" and exit code 139. I'm not sure what else I can tell you. Windows version is "Windows 7 6.1.7601 Service Pack 1 Build 7601".

[RobertZenz]

@mb21 And yes, this seems related to #4283.

[mb21]

Yeah, maybe let's focus on #4283 first... seems easier to figure out why --help crashes than why --lua-filter crashes – and it might just be for the same reason.

[robinerd]

Compiled pandoc from source on Windows 7, and it resolved also this issue! So I suppose the problem is only related to the distributed exe file. See #4283 for details.

[mb21]

Duplicate of #4283