I'm not sure what you're asking. If the source length is zero then there is no storage access for the source.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר ________________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Mark Henderson <[email protected]> Sent: Tuesday, June 30, 2026 12:49 PM To: [email protected] <[email protected]> Subject: Zero-address-detection External Message: Use Caution I stumbled upon this in Ch 4 of POPS in connection with some strange results I experienced when trying to do a MVCL from a dataspace whose origin was zero. The doc is far from clear and, frankly, looks incomplete so I'm wondering whether the subject is better described elsewhere. Note, I understand I can change the dataspace origin but that's not the essence of the question. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
