On Thu, 21 Aug 2025 21:22:13 -0700, Leonard D Woren <ibm-main...@ldworen.net> wrote:
>> Writing and maintaining code requires actual work by a skilled engineer, >> so there is a limit to how big it can be. > >What if you're using one of those bloatware languages that I >previously dissed? How big is the executable for "hello world" in >various languages? Did you know that saving an M$Word file with >contents of only "hello world" is 24K? (At least it was in the >mid-90s when I tried it.) While it's true that I was thinking of assembler and C when I wrote my original comment, in particular 400,000 lines of C code produces a 3 MB executable typically - that is indeed making use of an optimizer - but hand-written assembler can obviously achieve the same thing. While I haven't looked at the assembler produced by other languages, I would assume that they are the same as unoptimized C, or not much worse. I was once involved in a (large) project written in Ada and from memory they managed to get a 16 MiB executable that exceeded some system limitations. The fact that the vendor hadn't seen that before suggests it was rare. So yeah - even if my guess of DB2 being a few MB of actual executable is wrong - I don't think it's going to be wrong by a factor of 100 or anything like that. And even a factor of 100 would be a pretty small proportion of a 4 GiB address space, which is what the original question was about. ie why does anyone need to put their code above 2/4 GiB? Short answer - they don't. But I want to do it anyway, for reasons other than "need". BTW, the z390 suggestion elsewhere in this thread has led to me being able to get my C90-compliant programs built to run on MVS to z/OS on a PC using gccmvs plus z390. ie I am no longer dependent on having an MVS environment to target MVS. That's still 32-bit though (aka 31-bit, aka 24-bit). I'm planning on eliminating use of official MVS assembler macros and replacing them with direct calls to SVCs etc, so that I only need a smattering of assembler that doesn't need macro facilities, so I can use as370 and eliminate the need for z390 too. And then implement another technique to override the SVC so that I can run under z/PDOS-generic (and mfemul as the emulator) so that I can run (certain) perfectly valid z/OS executables on an MSDOS-like system. BFN. Paul. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
