Do not use __STDC_ISO_10646__ with Cygwin (!755) · Merge requests · GNOME / GLib

LRN requested to merge lrn/glib:cygwin-no-collate into master Mar 27, 2019

Cygwin defines this since 1.7.8, but Cygwin wchar_t is only 16-bit while this code seems to assume 32-bit wchar_t. So, either some incorrect assumptions need to be fixed in the STDC_ISO_10646 code paths, or the conditionals need to also be guarded && (SIZEOF_WCHAR_T == 4).

Reported by SLao: http://article.gmane.org/gmane.os.cygwin.ports.general/1330

Do not use __STDC_ISO_10646__ with Cygwin

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