illumos gate

On a freshly installed machine (SunOS 5.11 illumos-7d1eae8c55 i86pc i386 i86pc)
/bin/tr gives incorrect results when LC_COLLATE is different from "C"

\# locale
LANG=fr_FR.UTF-8
LC_CTYPE=fr_FR.ISO8859-1
LC_NUMERIC=C
LC_TIME=C
LC_COLLATE=fr_FR.ISO8859-1
LC_MONETARY=fr_FR.ISO8859-15
LC_MESSAGES=C
LC_ALL=

\# echo adresse | tr a-z A-Z
Aðséßßé

This result is wrong. The correct result should be ADRESSE,
as observed on Linux.

The correct result is obtained when setting LC_COLLATE to C

\# echo adresse | LC_COLLATE=C tr a-z A-Z
ADRESSE

or when setting LC_ALL to C

\# LC_ALL=C ; export LC_ALL ; locale
LANG=fr_FR.UTF-8
LC_CTYPE="C" 
LC_NUMERIC=C
LC_TIME=C
LC_COLLATE="C" 
LC_MONETARY="C" 
LC_MESSAGES=C
LC_ALL=C

\# echo adresse | tr a-z A-Z
ADRESSE

Note: a very similar bug was described here for FreeBSD :
[[https://forums.freebsd.org/threads/tr-and-lc_collate.6875/]]
Maybe the fix is available in the BSD version of tr.