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Groups > comp.lang.c > #70211

Re: lalloc() -- local stack allocation

Subject Re: lalloc() -- local stack allocation
Newsgroups comp.lang.c
References (10 earlier) <056ee69d-70f7-407a-bbb5-d0c769ca6f4f@googlegroups.com> <msqph5$63o$1@speranza.aioe.org> <81921284-17d1-450c-82f0-7bf86ad7953d@googlegroups.com> <ZDeIx.65656$EX5.43433@fx05.iad> <c4354dcf-ea2d-4fa2-b3b7-a03043002785@googlegroups.com>
From Richard Damon <Richard@Damon-Family.org>
Message-ID <kMsIx.50797$fJ3.6607@fx16.iad> (permalink)
Organization Forte - www.forteinc.com
Date 2015-09-11 00:29 -0400

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On 9/10/15 8:55 AM, Rick C. Hodgin wrote:
> On Thursday, September 10, 2015 at 8:24:38 AM UTC-4, Richard Damon wrote:
>> Note, that when ptr goes out of scope, so does the int buff, and you
>> should release its stack space, but you have 'trapped' it with the
>> lalloc allocation? (This isn't insolvable, but it doesn't sound like you
>> have given this any thought).
>
> In RDC, int buff[] and float buff[] are static. They exist on the
> stack always, regardless of scope. And, since they exist outside
> of each other's scope, they will be partially/fully overlapped.
>
> Best regards,
> Rick C. Hodgin
>

Do you do the same for struct type variables on the stack? Even just an 
ordinary int would show the problem, just maybe you can try to brush it 
under the rug for being small.

One BIG issue with making arrays automatically static is now no 
recursive or reenterent function can use an array on the stack!

You also have likely greatly increased the memory requirement for some 
programs, as EVERY array used within every function needs to be 
statically allocated, not just those currently being executed.

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lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-12 02:23 -0700
  Re: lalloc() -- local stack allocation Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-07-12 11:48 +0200
    Re: lalloc() -- local stack allocation Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-07-12 11:48 +0200
  Re: lalloc() -- local stack allocation Philipp Klaus Krause <pkk@spth.de> - 2015-07-12 13:33 +0200
  Re: lalloc() -- local stack allocation Robert Wessel <robertwessel2@yahoo.com> - 2015-07-12 06:54 -0500
  Re: lalloc() -- local stack allocation Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-12 06:17 -0700
    Re: lalloc() -- local stack allocation Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-07-12 16:47 +0200
      Re: lalloc() -- local stack allocation Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-12 11:12 -0700
      Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-08 11:53 -0700
        Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-08 12:16 -0700
          Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-08 15:46 -0700
            Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-08 16:12 -0700
              Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-09 06:53 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-09 16:06 -0700
                Re: lalloc() -- local stack allocation "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-09-09 16:17 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-09 16:26 -0700
                Re: lalloc() -- local stack allocation "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-09-09 19:22 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-09 19:55 -0700
                Re: lalloc() -- local stack allocation "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-09-09 20:46 -0700
                Re: lalloc() -- local stack allocation "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-09-09 20:50 -0700
                Re: lalloc() -- local stack allocation "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-09-11 23:59 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-12 06:22 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-09 21:10 -0700
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-10 07:08 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-10 08:17 -0700
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-10 08:54 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-10 09:19 -0700
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-10 16:55 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-10 18:41 -0700
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-11 09:04 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 10:17 -0700
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-11 11:34 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 11:47 -0700
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-11 13:44 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 17:52 -0700
                Re: lalloc() -- local stack allocation "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-09-11 11:37 -0700
                Re: lalloc() -- local stack allocation Richard Damon <Richard@Damon-Family.org> - 2015-09-10 08:24 -0400
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-10 05:55 -0700
                RDC (Was: lalloc() -- local stack allocation) gazelle@shell.xmission.com (Kenny McCormack) - 2015-09-10 13:01 +0000
                Re: lalloc() -- local stack allocation Richard Damon <Richard@Damon-Family.org> - 2015-09-11 00:29 -0400
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 05:37 -0700
                Re: lalloc() -- local stack allocation Richard Damon <Richard@Damon-Family.org> - 2015-09-11 22:48 -0400
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 20:05 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 20:22 -0700
                Re: lalloc() -- local stack allocation Melzzzzz <mel@zzzzz.com> - 2015-09-12 11:57 +0200
                Re: lalloc() -- local stack allocation fir <profesor.fir@gmail.com> - 2015-09-12 04:34 -0700
                Re: lalloc() -- local stack allocation fir <profesor.fir@gmail.com> - 2015-09-12 07:28 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-12 05:44 -0700
                Re: lalloc() -- local stack allocation Ian Collins <ian-news@hotmail.com> - 2015-09-12 13:02 +1200
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 18:25 -0700
                Re: lalloc() -- local stack allocation Ian Collins <ian-news@hotmail.com> - 2015-09-12 13:42 +1200
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 19:11 -0700
                Re: lalloc() -- local stack allocation Melzzzzz <mel@zzzzz.com> - 2015-09-12 04:27 +0200
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 19:44 -0700
                Re: lalloc() -- local stack allocation James Kuyper <jameskuyper@verizon.net> - 2015-09-11 23:01 -0400
                Re: lalloc() -- local stack allocation Richard Heathfield <rjh@cpax.org.uk> - 2015-09-12 11:12 +0100
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-12 05:55 -0700
                Re: lalloc() -- local stack allocation Richard Heathfield <rjh@cpax.org.uk> - 2015-09-12 14:16 +0100
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-12 06:24 -0700
                Re: lalloc() -- local stack allocation Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-09-12 10:57 -0700
                Re: lalloc() -- local stack allocation fir <profesor.fir@gmail.com> - 2015-09-12 11:13 -0700
                Re: lalloc() -- local stack allocation Gareth Owen <gwowen@gmail.com> - 2015-09-12 19:31 +0100
                Re: lalloc() -- local stack allocation gazelle@shell.xmission.com (Kenny McCormack) - 2015-09-12 19:20 +0000
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-12 12:06 -0700
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-12 14:24 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-12 19:22 -0700
                Re: lalloc() -- local stack allocation Ian Collins <ian-news@hotmail.com> - 2015-09-12 14:54 +1200
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-11 20:18 -0700
                Re: lalloc() -- local stack allocation Ian Collins <ian-news@hotmail.com> - 2015-09-12 16:20 +1200
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-12 05:43 -0700
                Re: lalloc() -- local stack allocation "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-09-12 14:02 -0700
                Re: lalloc() -- local stack allocation Melzzzzz <mel@zzzzz.com> - 2015-09-12 04:25 +0200
                Re: lalloc() -- local stack allocation Bartc <bc@freeuk.com> - 2015-09-12 10:32 +0100
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-09 16:23 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-09 16:38 -0700
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-09 17:01 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-09 17:08 -0700
                Re: lalloc() -- local stack allocation "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-09-09 17:37 -0700
                Re: lalloc() -- local stack allocation "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-09 18:06 -0700
                Re: lalloc() -- local stack allocation Bartc <bc@freeuk.com> - 2015-09-10 10:54 +0100
                Re: lalloc() -- local stack allocation supercat@casperkitty.com - 2015-09-09 16:24 -0700
        Re: lalloc() -- local stack allocation Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-09-08 20:32 +0100
        Re: lalloc() -- local stack allocation jadill33@gmail.com - 2015-09-08 13:25 -0700
  Re: lalloc() -- local stack allocation "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-07-12 10:17 -0700
  Re: lalloc() -- local stack allocation gordonb.zziiu@burditt.org (Gordon Burditt) - 2015-07-27 22:41 -0500
    Re: lalloc() -- local stack allocation Keith Thompson <kst-u@mib.org> - 2015-07-28 08:35 -0700

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