[Vala] [Genie] bug in array construction?

[Denis Kuzmenok <forward_ua ukr net>]

row : string[]
causes error:
mysql.vala.c: In function ‘_main’:
mysql.vala.c:25: error: array size missing in ‘row2’
mysql.vala.c:38: error: incompatible types in assignment

row : string[]?
causes error:
error: syntax error, expected line end or semicolon but got `?'

while Vala works fine with "[]" and "?"
it's a bug or just "features" of Genie?