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I have at least one compiler that produces a subscript-out-of-range error if A has dimension (1:10), A(:J) is used as an actual argument, J <= 0, and run-time subscript checking is on. I think this should be legal. On page 66 of the Fortran 90 standard, the paragraph immediately before 6.2.2.3.2 begins: "Note that a subscript in a subscript triplet need not be within the declared bounds for that dimension if all values used in selecting the array elements are within the declared bounds." Is this normative text? It's the "Note that" part that makes me uncertain. Best regards, Van Snyder %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%