Hello,

and thank you for an awesome software and all the work you put into it over the years!

Here is a bug report about the latest version:

Version:

• qdirstat 1.8
• qt5-base 5.15.2

Observed behavior:

• Sparse files are detected correctly when scanning filesystem from GUI
• Apparent and allocated sparse file sizes seem to be written correctly to .qdirstat.cache.gz file generated from GUI
• GUI displays incorrect Allocated size when reading cache file generated by itself

Reproducer:

• generate sparse file

dd if=/dev/zero of=sparse count=1 seek=100 bs=1M

• generate cache file of the directory either in GUI or using

qdirstat-cache-writer .

• load the cache file into the GUI

• Screenshot of "live scan" - sizes are okay:
  

• Screenshot of cache read - allocated size is incorrect:
  

• cache file to reproduce the problem:
  .qdirstat.cache.gz

Please let me know what other information you need.