Обсуждение: BUG #14300: Empty cube representation

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a@ustimen.co writes:
> SELECT CUBE(ARRAY[]::INTEGER[]);
> -- Gives '()'
> SELECT '()'::CUBE;
> -- Gives 'ERROR:  bad cube representation'

Hmm.  There are more ways than that to produce a cube that cube_in won't
take: you can put in an infinity or NaN coordinate via the cube-from-
float-array path too, and cube_out will print them, but cube_in won't
take them.  We fixed something similar with the core geometric types
recently.

            regards, tom lane