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Error C2466 when compiling [message #1848228]

Thu, 25 November 2021 13:38

Wolfgang Trischnigg

Messages: 45
Registered: April 2016

Member

Hello,

first of all I'm using IDE and FORTE 2.0.0; CMAKE 3.22.0; VS 2022

I always get the error
"C2466 Zuordnung eines Arrays der konstanten Größe 0 nicht möglich"

When i click on the error it points to:
- const SCFB_FBParameter FORTE_AIT::scm_astParamters[] = {

- const SCFB_FBFannedOutConnectionData FORTE_AIT::scm_astFannedOutEventConnections[] = {};

- const SCFB_FBFannedOutConnectionData FORTE_AIT::scm_astFannedOutDataConnections[] = {};

Can you please give me a hint, what I can do?

Best regards,
Wolfgang

[Updated on: Thu, 25 November 2021 15:40]

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Re: Error C2466 when compiling [message #1848257 is a reply to message #1848228]

Fri, 26 November 2021 07:33

Alois Zoitl

Messages: 1585
Registered: January 2014

Senior Member

Hi Wolfgang,

I fear we have hear a bug in the C++ exporter. Could I have the fbt file of this CFB? As last time E-Mail is fine.

BR,
Alois

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Re: Error C2466 when compiling [message #1848333 is a reply to message #1848257]

Sun, 28 November 2021 15:15

Alois Zoitl

Messages: 1585
Registered: January 2014

Senior Member

Thanks for providing your FB for tests. It seems we have here a difference between GCC (where I do most of my 4diac FORTE work with) and the MSVS C++ compiler. The problem is that we have some arrays where we very lately in the code generation process know if they have content or not. We so far made them empty and didn't use them. GCC was happy with that. MSVS C++ not. I would say the latter is correct and we shouldn't generate these empty initialization. I created a bug report [1] and a first fix [2] for the problem. As soon as it is merged we will finally do the long overdue 2.0.1 maintenance release.

In the mean-time, as work around you can just remove the three lines (including maybe the following line with the closing '};'). I would also be interested if this is then compiling with MSVS C++. Otherwise I would need to do more changes to our exporter.

[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=577503
[2] https://git.eclipse.org/r/c/4diac/org.eclipse.4diac.ide/+/188225

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Re: Error C2466 when compiling [message #1848402 is a reply to message #1848333]

Wed, 01 December 2021 10:34

Martin Melik Merkumians

Messages: 117
Registered: March 2016

Senior Member

Hi Wolfgang,

this should now work (https://git.eclipse.org/r/c/4diac/org.eclipse.4diac.ide/+/188225) and is available on the 2.0.x branch.

Best regards,
Martin

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