Re: GNU APL error while saving workspace

[Dr . Jürgen Sauermann]

    Hi Paul,
    
    thanks for reporting this.
    
    I have checked the matter and the warning is bogus (from a time
    where a nested value could
    not have more than one parent).
    
    The warning is now removed (SVN 1744).
    
    In contrast to the warning it should be safe to use the )SAVEd
    workspace.
    
    Best Regards,
    Jürgen

On 1/31/24 06:02, Paul Rockwell wrote:

I'm running GNU APL version 1.8 / SVN 1740M built on macOS 14.3 on an Apple Silicon (ARM) Mac.

I'm getting an error saving the workspace after executing the following:

paulrockwell@Upstairs ~ % apl

                    ______ _   __ __  __    ___     ____   __ 

                   / ____// | / // / / /   /   |   / __ \ / / 

                  / / __ /  |/ // / / /   / /| |  / /_/ // /  

                 / /_/ // /|  // /_/ /   / ___ | / ____// /___

                 \____//_/ |_/ \____/   /_/  |_|/_/    /_____/

                  Welcome to GNU APL version 1.8 / SVN: 1740M

                 Copyright © 2008-2023  Dr. Jürgen Sauermann

                       Banner by FIGlet: www.figlet.org

                This program comes with ABSOLUTELY NO WARRANTY;

                          for details run: apl --gpl.

     This program is free software, and you are welcome to redistribute it

         according to the GNU Public License (GPL) version 3 or later.

      PRD←('LPS' 6.95)('TAPES' 7.95)('CDS' 12.95)

      PRD

  LPS 6.95    TAPES 7.95    CDS 12.95  

      )SAVE REPRO

2024-01-30  23:55:55 (GMT-5) 

      PRDTBL ← ⊃PRD 

      PRDTBL

 LPS    6.95 

 TAPES  7.95 

 CDS   12.95 

      )WSID

IS REPRO

      )SAVE

*** Sub-Value 0x152f164b0 has two parents.

Child: vid=29, _val=0x152f164b0_par=1

Parent 2: vid=5, _val=0x142e04c90_par=-1

Call stack:

*** useless apl.lines (no CXXFLAGS=-rdynamic -gdwarf-2)

----------------------------------------

-- Stack trace at /Volumes/MyPassport/paulrockwell/Documents/Build/GNU_APL/src/Archive.cc:1080

----------------------------------------

0xa @@@@

0xa  @@@@

0xa   @@@@

0xa    @@@@

0xa     @@@@

0xa      @@@@

0xa       @@@@

0xa        @@@@

========================================

 Running )CHECK...

OK      - no stale functions

OK      - no stale values

OK      - no stale indices

OK      - no duplicate parents

The workspace will be )SAVEd, but using it for anything other than for

 recovering its content (i.e. defined functions or variables) means asking

 for BIG trouble!

*** Sub-Value 0x152f06390 has two parents.

Child: vid=23, _val=0x152f06390_par=2

Parent 2: vid=5, _val=0x142e04c90_par=-1

Call stack:

----------------------------------------

-- Stack trace at /Volumes/MyPassport/paulrockwell/Documents/Build/GNU_APL/src/Archive.cc:1080

----------------------------------------

0xa @@@@

0xa  @@@@

0xa   @@@@

0xa    @@@@

0xa     @@@@

0xa      @@@@

0xa       @@@@

0xa        @@@@

========================================

 Running )CHECK...

OK      - no stale functions

OK      - no stale values

OK      - no stale indices

OK      - no duplicate parents

The workspace will be )SAVEd, but using it for anything other than for

 recovering its content (i.e. defined functions or variables) means asking

 for BIG trouble!

*** Sub-Value 0x142e04200 has two parents.

Child: vid=0, _val=0x142e04200_par=3

Parent 2: vid=5, _val=0x142e04c90_par=-1

Call stack:

----------------------------------------

-- Stack trace at /Volumes/MyPassport/paulrockwell/Documents/Build/GNU_APL/src/Archive.cc:1080

----------------------------------------

0xa @@@@

0xa  @@@@

0xa   @@@@

0xa    @@@@

0xa     @@@@

0xa      @@@@

0xa       @@@@

0xa        @@@@

========================================

 Running )CHECK...

OK      - no stale functions

OK      - no stale values

OK      - no stale indices

OK      - no duplicate parents

The workspace will be )SAVEd, but using it for anything other than for

 recovering its content (i.e. defined functions or variables) means asking

 for BIG trouble!

2024-01-30  23:56:28 (GMT-5)  REPRO

      )ERASE PRDTBL

      )SAVE 

2024-01-30  23:56:46 (GMT-5)  REPRO

      )OFF

As you can see, if I erase the variable PRDTBL, the save error goes away.

Please let me know if you need any other information or if I can assist in any further debugging. I have the sources and can debug and rebuild if necessary.

Thank you.

- Paul Rockwell

  paulrockwell@mac.com