Hmmm. I shared David's impression but http://publibfp.dhe.ibm.com/epubs/pdf/i1357010.pdf lists LE as a "Target System Mandatory Operational Requisite."
Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Linda Chui Sent: Thursday, April 29, 2021 12:11 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Meta languages [was: RE: Assembler Language Programming for IBM System z Servers] On Thu, 8 Apr 2021 18:27:06 +0800, David Crayford <dcrayf...@gmail.com> wrote: >On 6/04/2021 9:53 pm, Charles Mills wrote: >>> You don't use templates >> I certainly do use templates. Not sure how you get "don't use templates" >> from what I wrote. Heck, I *over* used templates in the first large C++ >> project I ever did, and boy, does that make a mess! Now I think I am down to >> a happy medium. I don't see them as "competitive" (in a design sense) with >> macros. > >Overusing as in template meta-programming? >https://en.wikipedia.org/wiki/Template_metaprogramming > >The XL C++ compiler is withering on the vine. The word is that IBM don't >the resources to keep it up to date with the current standards so the >xlclang++ port of clang using the existing Toby back-end is the way to >go. If you use PDS data sets for your source your SOL as it's z/OS UNIX >only and only produces 64-bit modules. > >But what I find exciting is that IBM have stated their intentions to >fully port LLVM/clang/libc[++] to z/OS without a reliance on LE so >supervisor state programming in C++ will be a reality without the >nightmare of LE ESPIE/ESTAE condition handlers. > >https://lists.llvm.org/pipermail/llvm-dev/2020-June/142174.html > > >> Charles >> >> >> -----Original Message----- >> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On >> Behalf Of David Crayford >> Sent: Tuesday, April 6, 2021 5:15 AM >> To: IBM-MAIN@LISTSERV.UA.EDU >> Subject: Re: Meta languages [was: RE: Assembler Language Programming for IBM >> System z Servers] >> >> On 6/04/2021 1:23 am, Charles Mills wrote: >>>> But IMHO none easy to learn or use. >>> I am generally not a fan of meta languages at all. I think writing programs >>> is hard enough, without having to write two effective programs: one that >>> runs at compile time and one that runs at run time. >>> >>> In my C++, which is now my primary language, I eschew the use of C macros >>> as much as reasonably possible. Reasonableness is a key here. For a few >>> things, macros make sense. >> That's interesting. You don't use templates which are one the most >> powerful features of C++? >> Well, I didn't see a reference to LE in our statement of direction at https://community.ibm.com/community/user/ibmz-and-linuxone/blogs/robert-barrington1/2020/08/04/ibm-cc-and-fortran-compilers-to-adopt-llvm I believe the compiler will require LE for the foreseeable future, though if you want to request an LE free mode, I’m sure you can put in a request for it at the RFE site https://www.ibm.com/developerworks/rfe/ Hope this helps. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
