Description:
This crash occurs in v6.0.3.2, but also occurred in version 5 (can't determine which version as no longer installed).

My host OS is Mint 19 (based on Ubuntu 18.04 LTS).

I thought this issue was where the filename had an extra dot and nothing else, but it doesn't appear to be so. I think it only occurs if you import a CSV file with an extra dot in the filename (see attached file #1), then create a chart with default settings (no customisations), and save to a file with the same name but the extension ods (see attached file).

I suppose this could be a file save issue as well, but I can't diagnose any further on my own.

Steps to Reproduce:
1. Open the attached CSV file.
2. Create a chart with standard options (click through and hit finish).
3. Save the file as ODS with the same name, except for the file extension.
4. Attempt to open the ODS file after closing Libreoffice.

Actual Results:
This occurs both on my desktop with a modern Intel i5-4440, and my laptop with an AMD E1-1200 APU (6 years old). In both cases, there is a massive hang with high CPU load (up to a few minutes on the laptop) before I am informed that

"This file contains links to other files.
Should they be updated?"

If I click yes, I get the error

"The following external file could not be loaded. Data linked from this file did not get updated.

sump:M0-2018-07-26 07:55:20.047821"

And the chart is missing.

If I click no, nothing happens and the chart is missing.

Expected Results:
The file and chart both load quickly as normal.


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
On the desktop:

Version: 6.0.3.2
Build ID: 1:6.0.3-0ubuntu1
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3; 
Locale: en-GB (en_GB.UTF-8); Calc: group

I believe OpenGL (hardware acceleration?) is enabled, but the option name has changed, so I am unsure.