Changeset 489ea02ed351 changed PyUnicode_FromWideChar() and PyUnicode_FromUnicode(): raise a ValueError if a character in not in range [U+0000; U+10ffff].

test__locale errors:

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ERROR: test_float_parsing (test.test__locale._LocaleTests)
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Traceback (most recent call last):
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/test/test__locale.py", line 134, in test_float_parsing
    if localeconv()['decimal_point'] != '.':
ValueError: character U+30000020 is not in range [U+0000; U+10ffff]

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ERROR: test_lc_numeric_basic (test.test__locale._LocaleTests)
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Traceback (most recent call last):
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/test/test__locale.py", line 105, in test_lc_numeric_basic
    li_radixchar = localeconv()[lc]
ValueError: character U+30000020 is not in range [U+0000; U+10ffff]

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ERROR: test_lc_numeric_localeconv (test.test__locale._LocaleTests)
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Traceback (most recent call last):
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/test/test__locale.py", line 91, in test_lc_numeric_localeconv
    self.numeric_tester('localeconv', localeconv()[lc], lc, loc)
ValueError: character U+30000020 is not in range [U+0000; U+10ffff]

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ERROR: test_lc_numeric_nl_langinfo (test.test__locale._LocaleTests)
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Traceback (most recent call last):
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/test/test__locale.py", line 79, in test_lc_numeric_nl_langinfo
    self.numeric_tester('nl_langinfo', nl_langinfo(li), lc, loc)
ValueError: character U+30000020 is not in range [U+0000; U+10ffff]

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If the issue is specific to the hu_HU locale, a possible workaround is to skip this locale on Solaris. I changed to test to display the locale on failure.