New comment by Tomab89 on void-packages repository

https://github.com/void-linux/void-packages/issues/14276#issuecomment-529191170

Comment:
I finally got some time to investigate further. It seems it must be a problem upstream. I tested this on the Solus distribution as well, with same results. They also have similar package versions as here in Void, GCC 9, Qt Creator 4.9.2.