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Bug 670403 - g_utf8_collate returns 0 on U+C5D0 vs U+CD94
g_utf8_collate returns 0 on U+C5D0 vs U+CD94
Status: RESOLVED OBSOLETE
Product: glib
Classification: Platform
Component: i18n
unspecified
Other All
: Normal normal
: ---
Assigned To: gtkdev
gtkdev
Depends on:
Blocks: 670232
 
 
Reported: 2012-02-19 17:24 UTC by Morten Welinder
Modified: 2018-05-24 13:47 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Morten Welinder 2012-02-19 17:24:54 UTC 
U+C5D0 "에"
U+CD94 "추"

According to g_utf8_collate these two are identical.  They don't look
the same, so I don't think that is correct.
Comment 1 Dan Winship 2012-02-19 18:25:26 UTC 
glib just defers to libc (after translating from utf8 to locale encoding if necessary). So either (a) NOTGNOME, it's a libc bug, or (b) NOTABUG, this behavior is correct. Not sure which...
Comment 2 Morten Welinder 2012-02-20 00:50:28 UTC 
That's a bit too easy.

If (b) you should worry about how much glib/gtk code that is safe in the
presence of an inconsistent comparison.  qsort, for example, has undefined
behaviour and can crash.
Comment 3 Dan Winship 2012-02-20 03:31:31 UTC 
It's not inconsistent (in any way qsort would care about). The two characters are equal to each other regardless of which order you compare them in.
Comment 4 Andreas J. Guelzow 2012-02-20 17:36:06 UTC 
Dan, you forgot
(c) g_utf8_collate incorrectly ignores that strcoll is setting errno:
The strcoll() function may fail if:
[EINVAL] The s1 or s2 arguments contain characters outside the domain of the collating sequence.
Comment 5 Morten Welinder 2012-02-20 17:57:36 UTC 
Same issue in the wcscoll branch.
Comment 6 GNOME Infrastructure Team 2018-05-24 13:47:50 UTC 
-- GitLab Migration Automatic Message --

This bug has been migrated to GNOME's GitLab instance and has been closed from further activity.

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