type Void is not supported

[Sundararajan Athijegannathan]

Hi,

void* as return type is supported. But, as you found, that header typedefs void as a type and then returns pointer to that.

Minimal code of that pattern is as follows:

typedef void Foo;
Foo* func(int);

jextract generates MemorySegment as return type for "func" method correctly.  jextract's typedef handling code that prints the warning. Nothing is generated for "Foo" itself (as Foo is "void" type and so there is no equivalent java layout can be defined for it). You can ignore that meaning and the generated binding will work as expected.

Source info (line number etc) are not retained in jextract's representation of clang CXCursor and CXType objects. As of now, it is not possible to print source locations post parsing. While parsing clang diagnostics, if any, are printed with source info.

Thanks
Sundar

________________________________
From: jextract-dev <jextract-dev-retn at openjdk.org> on behalf of Adrian Trapletti <a.trapletti at ustermetrics.com>
Sent: 21 July 2024 02:36
To: jextract-dev at openjdk.org <jextract-dev at openjdk.org>
Subject: Re: type Void is not supported

Hi,

The reason for the warnings seem to be
https://github.com/oxfordcontrol/Clarabel.cpp/blob/main/include%2Fc%2FDefaultSolver.h#L17-L24

Otherwise the generated bindings look good.

Maybe a nice to have would be that jextract prints the line number that is responsible for a warning together with the warning?

Thanks and best regards,
Adrian

Dr. Adrian Trapletti
CEO

Uster Metrics GmbH
Steinstrasse 9b
8610 Uster, Switzerland

P +41 32 512 83 63
M +41 79 103 71 31

a.trapletti at ustermetrics.com<mailto:a.trapletti at ustermetrics.com>
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On Sat, Jul 20, 2024, 19:12 Adrian Trapletti <a.trapletti at ustermetrics.com<mailto:a.trapletti at ustermetrics.com>> wrote:
Hi,

I am trying to generate bindings for https://github.com/oxfordcontrol/Clarabel.cpp/blob/main/include/Clarabel.h

Jextract issues the following warnings

WARNING: Skipping ClarabelDefaultSolver_f64 (type Void is not supported)
WARNING: Skipping ClarabelDefaultSolver_f32 (type Void is not supported)
WARNING: Skipping ClarabelDefaultSolver (type Void is not supported)

For me it seems that the returned void pointer is not supported https://github.com/oxfordcontrol/Clarabel.cpp/blob/main/include/c/DefaultSolver.h#L29

Is this a known issue? Is there a workaround?

Thank you and best regards
Adrian

Dr. Adrian Trapletti
CEO

Uster Metrics GmbH  |  Steinstrasse 9b, 8610 Uster, Switzerland
P +41 32 512 83 63  |  M +41 79 103 71 31
a.trapletti at ustermetrics.com<mailto:a.trapletti at ustermetrics.com>  |  www.ustermetrics.com<http://www.ustermetrics.com>


This email message including any attachments is confidential and may be privileged. It is intended solely for the use of the individual or entity named on this message. It is provided for informational purposes only and does not constitute an offer or invitation to subscribe for or purchase any services or products. Any form of disclosure, copying, modification or distribution is unauthorized. If you are not the intended recipient, you are requested to please notify the sender immediately and delete the message including any attachments from your computer system network. Email transmission cannot be guaranteed to be secure or error free as information could be modified. We therefore do not accept responsibility or liability as to the completeness or accuracy of the information contained in this message or any attachments.



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