pgmodeler-cli 0.9.4-alpha export to file encounters segmentation fault

[garetht]

Bug description
When attempting to use the --export-to-file command in pgloader-cli, a segmentation fault is encountered. This happens on 0.9.4-alpha and not 0.9.3.

How to reproduce
Please, if the bug can be reproduceable describe the steps in full details. If possible provide a sample model and/or a SQL dump for test purposes.

1. Create a directory with a models folder containing plain.dbm, which was made by creating a new empty project and saving it immediately.

<?xml version="1.0" encoding="UTF-8"?>
<!--
CAUTION: Do not modify this file unless you know what you are doing.
         Unexpected results may occur if the code is changed deliberately.
-->
<dbmodel pgmodeler-ver="0.9.4-alpha" use-changelog="false" last-position="0,0" last-zoom="1" max-obj-count="4"
	 default-schema="public" default-owner="postgres"
	 layers="Default layer"
	 active-layers="0"
	 layer-name-colors="#000000"
	 layer-rect-colors="#b4b4b4"
	 show-layer-names="false" show-layer-rects="false">
<database name="new_database" is-template="false" allow-conns="true">
</database>

<schema name="public" layers="0" fill-color="#e1e1e1" sql-disabled="true">
</schema>

</dbmodel>

2 Run docker run -v $(pwd)/models:/models -it --entrypoint /bin/bash apazga/docker-pgmodeler:0.9.4-alpha.
3. From within the Docker container, run pgmodeler-cli -platform offscreen --export-to-file --input /models/plain.dbm --output plain.sql

The following output is produced:

pgModeler 0.9.4-alpha command line interface.
Starting model export...
Loading input file: /models/plain.dbm
Segmentation fault

Expected behavior
The file should be exported to SQL.

Note that this does not occur in pgmodeler 0.9.3 with a similar empty file:

plain93.dbm

<?xml version="1.0" encoding="UTF-8"?>
<!--
CAUTION: Do not modify this file unless you know what you are doing.
         Unexpected results may occur if the code is changed deliberately.
-->
<dbmodel pgmodeler-ver="0.9.3" use-changelog="false" last-position="0,0" last-zoom="1" max-obj-count="4"
	 default-schema="public" default-owner="postgres">
<database name="new_database" is-template="false" allow-conns="true">
</database>

<schema name="public" layer="0" fill-color="#e1e1e1" sql-disabled="true">
</schema>

After running docker run -v $(pwd)/models:/models -it --entrypoint /bin/bash apazga/docker-pgmodeler:0.9.3:

root@7f42a820c9c0:/usr/local/src# pgmodeler-cli -platform offscreen --export-to-file --input /models/plain93.dbm --output plain.sql

pgModeler 0.9.3 command line interface.
Starting model export...
Loading input file: /models/plain93.dbm
Export to SQL script file: /usr/local/src/plain.sql
Generating SQL code for PostgreSQL `'
[31%] Generating SQL code: `new_database' (Database)
[100%] Output SQL file `/usr/local/src/plain.sql' successfully written.
Export successfully ended!

Screenshots
If applicable, add screenshots to help explain your problem.

Info about your desktop

• OS: Debian GNU/Linux (on Docker)
• Version: 9 (stretch)
• Window manager: XQuartz
• pgModeler version: 0.9.4-alpha
• Qt version:

Stacktrace / Debug info
No stacktrace was produced.

Additional info

1. This was found to persist even when a display was provided.
2. Exporting to PNG works fine in both versions.
3. The GUI for 0.9.4-alpha and other features used works well from within that Docker container.

[rkhaotix]

Hi @garetht

Maybe you've stumbled in a bug that I've already fixed in 0.9.4-alpha1 :)

I didn't test using docker but the result is supposed to be the same (since you have it working for 0.9.3 but not for 0.9.4-alpha). Anyway, I was able to run the command on 0.9.4-beta without any crash:

pgModeler command line interface.
Version 0.9.4-beta - 20210913.44c4bfffa Qt 5.15.1
PostgreSQL Database Modeler Project - pgmodeler.io
Copyright 2006-2021 Raphael Araújo e Silva <raphael@pgmodeler.io>

Starting model export...
Loading input file: /home/raphael/dbm_models/plain.dbm
Export to SQL script file: /home/raphael/pgmodeler/build/bin/plain.sql
Generating SQL code for PostgreSQL `13.0'
[31%] Generating SQL code: `new_database' (Banco de Dados)
[100%] SQL file `/home/raphael/pgmodeler/build/bin/plain.sql' successfully written.
Export successfully ended!