Description of problem:
The locale command returns a vague error message if the LOCPATH environment variable is defined.

[root@rhel75test gregs]# locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
.
.
.

This seems to be a legacy from AIX. See additional info below for more details.

Version-Release number of selected component (if applicable):
RHEL 6.all, 7.all, likely 8.n

How reproducible:
At will

Steps to Reproduce:
1. unset LOCPATH and the locale command works as advertised.
2. export LOCPATH=/any/path/anywhere and the locale command returns vague "No such file or directory" errors.
3.

Actual results:
The locale command returns errors when the LOCPATH environment variable is defined.

Expected results:
The locale command should return a useful error message if it has a problem; or it should not depend on the LOCPATH environment variable. If it needs to depend on the LOCPATH environment variable, it should be officially documented.

Additional info:

Here is how to reproduce the problem. As long as LOCPATH is undefined, local works as advertised. 

[root@rhel75test gregs]# unset LOCPATH
[root@rhel75test gregs]# locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
[root@rhel75test gregs]# export LOCPATH=/home/garbage
[root@rhel75test gregs]# locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
[root@rhel75test gregs]#