Created attachment 239952 [details] A short C reproducer program querylocale() returns C.UTF-8 for LC_COLLATE after the locale has been switched from C.UTF-8 to C. This is likely related to #25466 Other operating systems have aliases for a given locale, but they either always have a base one that the others are synonyms for, and have querylocale always return that base locale; or they make sure to use the proper alias based on the name in the original newlocale() call.
What is the "#25466" that you mentioned?
(In reply to Yuri Pankov from comment #1) Now I understand that you meant bug 255646, sorry for forgetting about it, and yes, seems to be the same problem!
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=269dea90d6eb32690730b0f6a17fb41170483104 commit 269dea90d6eb32690730b0f6a17fb41170483104 Author: Yuri Pankov <yuripv@FreeBSD.org> AuthorDate: 2023-03-28 15:10:47 +0000 Commit: Yuri Pankov <yuripv@FreeBSD.org> CommitDate: 2023-03-28 15:16:30 +0000 libc: use separate collate objects for C, POSIX, and C.UTF-8 Fix newlocale() overwriting the locale name in collate object when same instance was used for those locales, and querylocale() reporting unexpected value for LC_COLLATE_MASK. PR: 255646, 269375 Reviewed by: markj, bapt (previous version) Differential Revision: https://reviews.freebsd.org/D30146 lib/libc/locale/collate.c | 17 +++- lib/libc/tests/locale/Makefile | 1 + lib/libc/tests/locale/newlocale_test.c (new) | 111 +++++++++++++++++++++++++++ 3 files changed, 126 insertions(+), 3 deletions(-)
A commit in branch stable/13 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=a4916232acd614d4d7d7226d678b427aacb9730e commit a4916232acd614d4d7d7226d678b427aacb9730e Author: Yuri Pankov <yuripv@FreeBSD.org> AuthorDate: 2023-03-28 15:10:47 +0000 Commit: Yuri Pankov <yuripv@FreeBSD.org> CommitDate: 2023-09-20 13:10:52 +0000 libc: use separate collate objects for C, POSIX, and C.UTF-8 Fix newlocale() overwriting the locale name in collate object when same instance was used for those locales, and querylocale() reporting unexpected value for LC_COLLATE_MASK. PR: 255646, 269375 Reviewed by: markj, bapt (previous version) Differential Revision: https://reviews.freebsd.org/D30146 (cherry picked from commit 269dea90d6eb32690730b0f6a17fb41170483104) lib/libc/locale/collate.c | 17 +++- lib/libc/tests/locale/Makefile | 1 + lib/libc/tests/locale/newlocale_test.c (new) | 111 +++++++++++++++++++++++++++ 3 files changed, 126 insertions(+), 3 deletions(-)
Closing as fixed, please reopen if there are still issues here.