The lines beginning with * aren't C either <g>. You want void *realp ...
Also, your second and third lines combine pretty well into one. Cpool *p = (Cpool *)((long)realp & -16)); No one ever said system programming in C was pretty. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Steve Smith Sent: Tuesday, July 17, 2018 11:44 AM To: [email protected] Subject: Re: S0C6 in CSRC4RG1 In assembler, STORAGE provides a BNDRY= keyword, which would be fine, but this is a Metal C program. malloc provides no such thing. Don's suggestion is doable, but it's fugly C code, and amounts to doing vascular surgery wearing oven mitts: *void realp = malloc(1408 + 15); long ip = (long)realp & -16; *Cpool p = (*CPool)ip; Yeah, that's clear to anyone. Although I'm sure it could be obfuscated. Note: If you think the 1st & 3rd lines are commented out, this thread is not for you :-) Problems: 1. Undocumented requirement to quad-word align CPOOL anchor and/or extent in 64-bit mode (and actually undocumented alignment requirements for all). 2. Unable to guarantee quad-word alignment with malloc. Ugh. sas On Tue, Jul 17, 2018 at 1:41 PM, Don Poitras <[email protected]> wrote: > Add 15 bytes to whatever length you are asking for and copy the > pointer. 'And' the last nibble to 0. Voila! quad-aligned pointer. :) ---------------------------------------------------------------------- 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
