Selecting Parameters causes ThreeTanks to hang with "Enable Replaceable Support" enabled

[openmodelica@…]

I updated to the daily build this morning and found that selecting Parameters caused the ThreeTanks example in Modelica/Fluid/Examples/Tanks to hang. OMEdit runs at over 100% with no progress. Turning off "Enable Replaceable Support" results in the Parameters for tank2 quickly being displayed. The attached screen shot shows what I see.

Running on
Linux jenkins 4.19.0-14-amd64 #1 SMP Debian 4.19.171-2 (2021-01-30) x86_64 GNU/Linux

ii  drmodelica                                                  1.18.0~dev-65-g9ac6586-1                   all          An OMNotebook course in the Modelica language
ii  libomc:amd64                                                1.18.0~dev-65-g9ac6586-1                   amd64        The OpenModelica Compiler lib dependencies
ii  libomcsimulation:amd64                                      1.18.0~dev-65-g9ac6586-1                   amd64        The OpenModelica Compiler simulation library dependencies
ii  libomplot:amd64                                             1.18.0~dev-65-g9ac6586-1                   amd64        Plot tool for OpenModelica, lib dependencies
ii  libomsimulator:amd64                                        1.18.0~dev-65-g9ac6586-1                   amd64        The OpenModelica OMSimulator library dependencies
ii  omc                                                         1.18.0~dev-65-g9ac6586-1                   amd64        The OpenModelica Compiler
ii  omc-common                                                  1.18.0~dev-65-g9ac6586-1                   all          The OpenModelica Compiler lib dependencies
ii  omc-doc                                                     1.14.0~dev-406+g26ce2d8-1                  all          Documentation for OpenModelica
ii  omedit                                                      1.18.0~dev-65-g9ac6586-1                   amd64        A Modelica connection editor for OpenModelica
ii  omlib-complex-3.2.3                                         3.2.3~20210205~134043~git~OM~maint~3.2.3-1 all          Complex 3.2.3 is a Modelica library
ii  omlib-modelica-3.2.3                                        3.2.3~20210205~134043~git~OM~maint~3.2.3-1 all          Modelica 3.2.3 is a Modelica library
ii  omlib-modelicabyexample-0.5.0                               0.5.0~154~g6044b75-1                       all          ModelicaByExample 0.5.0 is a Modelica library
ii  omlib-modelicareference                                     20210205~134043~git~OM~maint~3.2.3-1       all          ModelicaReference is a Modelica library
ii  omlib-modelicaservices-3.2.3                                3.2.3~20210205~134043~git~OM~maint~3.2.3-1 all          ModelicaServices 3.2.3 is a Modelica library
ii  omnotebook                                                  1.18.0~dev-65-g9ac6586-1                   amd64        A Mathematica-style Notebook for OpenModelica
ii  omplot                                                      1.18.0~dev-65-g9ac6586-1                   amd64        Plot tool for OpenModelica
ii  omshell                                                     1.18.0~dev-65-g9ac6586-1                   amd64        A text-based interface to OpenModelica (based on Qt)
ii  omshell-terminal                                            1.18.0~dev-65-g9ac6586-1                   amd64        A text-based interface to OpenModelica (based on readline)
ii  openmodelica                                                1.18.0~dev-65-g9ac6586-1                   amd64        A complete Modelica environment

[openmodelica@…]

ThreeTanks Fluid Example Rendering Errors

[Francesco Casella]

@openmodelica, I tried it on the latest Windows nightly and it works for me.

@Andrea, can you please check this on your Ubuntu installation?

[openmodelica@…]

Selecting Parameters inside the Modelica.Electrical.Digital.Examples.Adder4 model works fine with "Enable Replaceable Support" enabled works fine. It appears that the problematic behavior is associated with using the Fluid library.

[Andrea Bartolini]

Replying to casella:

@openmodelica, I tried it on the latest Windows nightly and it works for me.

@Andrea, can you please check this on your Ubuntu installation?

I confirm the issue on Ubuntu 18.04
By disabling the replaceable support the issue disappears.

OMEdit - OpenModelica Connection Editor
Connected to OpenModelica 1.18.0~dev-65-g9ac6586

[Francesco Casella]

OMG. Yet another size_t issue?

[Francesco Casella]

@adrpo, could some of your latest fixes to 1.16.4 have risen such an issue?

[Adrian Pop]

I can reproduce this on master with Windows. As far as I debugged it is not a size issue. It is not stuck, it just takes a really long time. On a first look it seems like OMEdit is not setting -d=nfAPI properly, maybe a bug because the flag was moved?
Strange thing is that the log file is now missing some OMC calls, I will talk with Adeel about it as I know he played with filtering this.

[Adeel Asghar]

I haven't done any filtering yet but yes the flag move might be related to it. I will debug it tomorrow.

[Francesco Casella]

OK, good luck with that!

[Adeel Asghar]

This should be fixed with ​PR#7215.

[Francesco Casella]

Very good! Does this mean we need to push it to 1.16.5? I guess so...

[Adeel Asghar]

Yes. See ​PR#7217.

[Adrian Pop]

If OMEdit did not set -d=nfAPI since the setting was moved on the general page then we will need to re-check *all* the tickets that we closed for 1.16.4.

I tried the PR, for me OMEdit still doesn't set -d=nfAPI.

[Francesco Casella]

See also ​PR 7216 for 1.17.0

[Adrian Pop]

Tested ​PR 7218 and this bug is fixed with it.

[Adrian Pop]

Please add the changes in PR 7218 to PR 7216 and make a new one for maintenance/1.16.

[Francesco Casella]

In the meantime I'll make a new 1.18.0-dev nightly and test it

[Francesco Casella]

Replying to adrpo:

Please add the changes in PR 7218 to PR 7216

Done, see the merged in ​PR 7216.