A sequence-directive with an empty
association-name-list is treated as if it contained the
names of all implicitly mapped objects and COMMON blocks in
the scoping unit that cannot otherwise be determined to be
sequential or nonsequential by their language context.
A sequential object may not be explicitly mapped.
No explicit mapping may be given for a component of a derived
type having the Fortran SEQUENCE attribute. Note that this
rule is applicable only under the approved extensions since
components of derived types cannot be explicitly mapped in HPF.
If a COMMON block is nonsequential, then all of the
following must hold:
Every occurrence of the COMMON block has exactly the
same number of components with each corresponding component having
a storage sequence of exactly the same size;
If a component is a nonsequential variable in any
occurrence of the COMMON block, then it must be
nonsequential with identical type, shape, and mapping attributes
in every occurrence of the COMMON block; and
Every occurrence of the COMMON block must be