News to me and I could not find any trace in the archives.
With z/OS v1.8 and later, r15 behavior has changed for a conditional storage obtain/getmain. For a successful request, the register may contain: 00000010_00000000 IBM has (poorly) documented this behavior at http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/IEA2A980/67.2 .8?SHELF=IEA2BK80&DT=20070514031429&CASE= Which states: When running in an AMODE64 environment, only the low half of GPR15 contains a return code. There is no guarantee for the contents of the high half of GPR15. IOW, do not use LTGR to test for a successful getmain/storage obtain unless preceded by LLGFR. ...chris. bmcsoftware 10431 Morado Circle Austin, Tx. 78759 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html

