[Info-vax] Text processing examples with Fortran requested

glen herrmannsfeldt gah at ugcs.caltech.edu
Wed Nov 18 20:40:53 EST 2009


Bob Koehler <koehler at eisner.nospam.encompasserve.org> wrote:

(snip, I wrote) 
>> COMMON block names and subroutine/function names are both
>> external names.  An initialized COMMON looks the same to the
>> linker as does a subroutine or functions (SD in the object module).
 
>   That's system specific.  And true on the IBM 360 I used, but not
>   on VMS.

Yes that was a S/360 (and successor) comment.  I presume VMS
object files don't have SD either.  SD is Section Definition,
indicating the name of a CSECT (control section).  Uninitialized
COMMON is CM, where initialized COMMON is SD.  There are also
ones for ENTRY points and for external references.

-- glen
 



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