[issue37886] PyStructSequence_UnnamedField not exported

[Irit Katriel]

Change by Irit Katriel :


--
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> PyStructSequence_UnnamedField unavailable on Windows

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue37886] PyStructSequence_UnnamedField not exported

[Zackery Spytz]

Change by Zackery Spytz :


--
nosy: +benjamin.peterson

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue37886] PyStructSequence_UnnamedField not exported

[Jeff Robbins]

Jeff Robbins  added the comment:

Editing one line in structseq.h seems to fix the issue.

I changed this

extern char* PyStructSequence_UnnamedField;

to

PyAPI_DATA(char*) PyStructSequence_UnnamedField;

rebuilt, and now my C extension can use PyStructSequence_UnnamedField.

--
Added file: https://bugs.python.org/file48551/structseq.h

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue37886] PyStructSequence_UnnamedField not exported

[Jeff Robbins]

New submission from Jeff Robbins :

Python 3.8.0b3 has the fixed 
https://docs.python.org/3/c-api/tuple.html#c.PyStructSequence_NewType, but one 
of the documented features of PyStructSequence is the special 
https://docs.python.org/3/c-api/tuple.html#c.PyStructSequence_UnnamedField 
which is meant to be used for unnamed (and presumably also "hidden") fields.

However, this variable is not "exported" (via __declspec(dllexport) or the 
relevant Python C macro) and so my C extension cannot "import" it and use it.

My guess is that this passed testing because the only tests using it are 
internal modules linked into python38.dll, which are happy with the `extern` in 
the header:

Include\structseq.h:extern char* PyStructSequence_UnnamedField;

--
components: Windows
messages: 349956
nosy: je...@livedata.com, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: PyStructSequence_UnnamedField not exported
type: compile error
versions: Python 3.8

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com