test_expr14 (built-in functions)

int(5.1)=5 abs(-2)=2 abs(-2.0)=2 defined(0)=1 length(1)=1 length('abc')=3 length('ab\'c')=4 hex(123)=291 oct(123)=83 allowed by current rules - but should not crash int()=0 oct()=0 hex()=0