+CHECK_EXPR_EVAL([negative checks],
+ [[$nonexistent], [error], [error: DEBUG EVALUATE: Unknown system variable $nonexistent.]],
+ [[RANGE(1, 2)], [error], [error: DEBUG EVALUATE: RANGE(number, number, number[, number, number]...) must have an odd number of arguments.]],
+ [[CONCAT.1('a', 'b')], [error], [error: DEBUG EVALUATE: CONCAT(string[, string]...) function cannot accept suffix .1 to specify the minimum number of valid arguments.]],
+ [[foobar(x)], [error], [error: DEBUG EVALUATE: No function or vector named foobar.]],
+ [[CONCAT.1('a' b)], [error], [error: DEBUG EVALUATE: Syntax error at `b': expecting `,' or `)'.]],
+ [[NCDF.CHISQ(1, 2, 3)], [error], [error: DEBUG EVALUATE: NCDF.CHISQ(number, number, number) is not available in this version of PSPP.]])
+