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Next: Generalized Data References Up: High Performance Fortran Journal Previous: Nested WHERE statements

ALLOCATE in FORALL

Proposal: ALLOCATE, DEALLOCATE, and NULLIFY statements may appear in the body of a FORALL.

Rationale: These are just another kind of assignment. They may have a kind of side effect (storage management), but it is a benign side effect (even milder than random number generation).

Example: TYPE SCREEN INTEGER, POINTER :: P(:,:) END TYPE SCREEN TYPE(SCREEN) :: S(N) INTEGER IERR(N) ... ! Lots of arrays with different aspect ratios FORALL (J=1:N) ALLOCATE(S(J) IF(ANY(IERR)) GO TO 99999