table.cc sometimes failed when dict.yaml contains only one row

[sih4sing5hong5]

If *.dict.yaml contains only one row, table.cc sometimes failed in some conditions.

Case A - Worked

It rewrote from luna_pinyin.dict.yaml, removed other rows. This configure worked with default luna_pinyin.schema.yaml.

---
name: luna_pinyin
version: "2014.06.13"
sort: by_weight
use_preset_vocabulary: false
...

ㄖ	ri

Case B - Failed

Repeated a charactor from Case A. This configure failed with default luna_pinyin.schema.yaml.

---
name: luna_pinyin
version: "2014.06.13"
sort: by_weight
use_preset_vocabulary: false
...

ㄖㄖ	ri

Log

      E0903 08:52:15.268484     6 table.cc:316] invalid metadata.
      E0903 08:52:15.268558     6 dictionary.cc:263] Error loading table for dictionary 'luna_pinyin'.

Trace

I traced Table::Load() and Table::Save() in table.cc.
But I have no idea about how does table.cc save and load the prism file.
Can you give some clues?
Thank you.

[sih4sing5hong5]

I tried with the deb version of ubuntu18.04. I will try again with newest librime next week.