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gunicollate: work around FreeBSD wchar_t not matching our gunichar type

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In !863 I assumed that a 4 byte wchar_t would be equal to gunichar on all platforms,
but this is not the case for FreeBSD. It previously was using the non wchar_t based API
because it doesn't define __STDC_ISO_10646__.

Add back the __STDC_ISO_10646__ check again and introduce a more meaningful macro for guarding
the code paths that are mixing gunichar and wchar_t.

Fixes #1798
This commit is contained in:
Christoph Reiter 2019-06-04 18:15:24 +02:00
parent 41f68f8b19
commit b49e767e2e
1 changed files with 6 additions and 3 deletions
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9
glib/gunicollate.c
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@ -37,6 +37,9 @@
#include "gcharset.h"
#include "gconvert.h"
#if SIZEOF_WCHAR_T == 4 && defined(__STDC_ISO_10646__)
#define GUNICHAR_EQUALS_WCHAR_T 1
#endif
#ifdef _MSC_VER
/* Workaround for bug in MSVCR80.DLL */
@ -99,7 +102,7 @@ g_utf8_collate (const gchar *str1,
g_free (str2_utf16);
g_free (str1_utf16);
#elif defined(HAVE_WCHAR_H) && SIZEOF_WCHAR_T == 4
#elif defined(HAVE_WCHAR_H) && defined(GUNICHAR_EQUALS_WCHAR_T)
gunichar *str1_norm;
gunichar *str2_norm;
@ -157,7 +160,7 @@ g_utf8_collate (const gchar *str1,
return result;
}
#if defined(HAVE_WCHAR_H) && SIZEOF_WCHAR_T == 4
#if defined(HAVE_WCHAR_H) && defined(GUNICHAR_EQUALS_WCHAR_T)
/* We need UTF-8 encoding of numbers to encode the weights if
* we are using wcsxfrm. However, we aren't encoding Unicode
* characters, so we can't simply use g_unichar_to_utf8.
@ -380,7 +383,7 @@ g_utf8_collate_key (const gchar *str,
g_return_val_if_fail (str != NULL, NULL);
result = carbon_collate_key (str, len);
#elif defined(HAVE_WCHAR_H) && SIZEOF_WCHAR_T == 4
#elif defined(HAVE_WCHAR_H) && defined(GUNICHAR_EQUALS_WCHAR_T)
gsize xfrm_len;
gunichar *str_norm;