undefined reference to _Py_ascii_whitespace

[schmir]

BPO	4122
Nosy	@amauryfa, @vstinner
Files	export_Py_ascii_whitespace.patch

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/amauryfa'
closed_at = <Date 2008-10-14.22:01:00.965>
created_at = <Date 2008-10-14.13:39:08.257>
labels = ['build', 'OS-windows']
title = 'undefined reference to _Py_ascii_whitespace'
updated_at = <Date 2008-10-14.22:01:00.964>
user = 'https://bugs.python.org/schmir'

bugs.python.org fields:

activity = <Date 2008-10-14.22:01:00.964>
actor = 'amaury.forgeotdarc'
assignee = 'amaury.forgeotdarc'
closed = True
closed_date = <Date 2008-10-14.22:01:00.965>
closer = 'amaury.forgeotdarc'
components = ['Windows']
creation = <Date 2008-10-14.13:39:08.257>
creator = 'schmir'
dependencies = []
files = ['11789']
hgrepos = []
issue_num = 4122
keywords = ['patch']
message_count = 5.0
messages = ['74743', '74744', '74748', '74771', '74772']
nosy_count = 3.0
nosy_names = ['amaury.forgeotdarc', 'vstinner', 'schmir']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = None
status = 'closed'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue4122'
versions = ['Python 2.6']

[schmir]

unicodeobject.h contains the following code:

extern const unsigned char _Py_ascii_whitespace[];

#define Py_UNICODE_ISSPACE(ch) \
	((ch) < 128U ? _Py_ascii_whitespace[(ch)] : _PyUnicode_IsWhitespace(ch))

When linking a module which uses the Py_UNICODE_ISSPACE macro, I get an
error "undefined reference to _Py_ascii_whitespace" (on windows using
the mingw compiler, linux works without problems).

The symbol should most probably be exported with the PyAPI_DATA macro...

This happens with python 2.6.

[vstinner]

You can try this patch for Python.

[schmir]

I hope someone else can test this, as I don't feel like setting up a
windows build environment...

[amauryfa]

This also happens with VS2008.

[amauryfa]

Committed r66891 (trunk) and r66892 (release26-maint).
Thanks for the report and the patch!

In the meantime, you may use _PyUnicode_IsWhitespace(ch), like the 2.5
version did.