Array Bound Violations

Attempting to operate past the end of an array is a common error:

• subscript references must lie within the declared bounds,
• compilers rarely check by default,
• can use switch for example, -CB on the EPC compiler, -C on the NAg compiler,
• checking is expensive, use sparingly.

The following example demonstrates a possible bound violation (if M ):

    REAL, DIMENSION(50) :: A
     ...
    DO I=1,M
      A(I) = A(I-1) + 1.0 ! refs A(0)
    END DO

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