Comment # 3 on bug 1207732 from Alynx Zhou

(In reply to Alynx Zhou from comment #2)
> > #8  0x000055c0e8aa3ff0 in fread (__stream=0x55c0e91a9b30, __n=4781, __size=4781, __ptr=0x55c0e9ab3c50) at /usr/include/bits/stdio2.h:240
> 
> This looks really wired to me (I mean n=4781 and size=4781), it should not.
> But gnome boxes is written in vala, which is translated into C so those
> should be automatically calculated...

It looks like there are mismatch on Valadoc and translation between vala and C
fread, I'll try to reproduce it with a minimal code piece.