Compound resource test fails with unexpected output from rError stack

[korydraughn]

• main
• 4-3-stable

---

The following failure is from testing #268 against irods/irods#9080.

        <testcase classname="irods.test.test_resource_types.Test_Resource_ReplicationToTwoCompoundResourcesWithPreferArchive" name="test_irepl_over_existing_third_replica__ticket_1705" time="26.811" timestamp="2026-09-17T19:03:53" file="scripts/irods/test/test_resource_types.py" line="4536">
                <failure type="AssertionError" message=""><![CDATA[Traceback (most recent call last):
  File "/var/lib/irods/scripts/irods/test/test_resource_types.py", line 4552, in test_irepl_over_existing_third_replica__ticket_1705
    self.admin.assert_icommand(['irepl', '-S', self.testresc, '-R', self.admin.default_resource, filename])
  File "/var/lib/irods/scripts/irods/test/session.py", line 162, in assert_icommand
    return assert_command(*args, **kwargs)
  File "/var/lib/irods/scripts/irods/test/command.py", line 76, in assert_command
    return _assert_helper(*args, should_fail=False, **kwargs)
  File "/var/lib/irods/scripts/irods/test/command.py", line 104, in _assert_helper
    assert result
AssertionError
]]></failure>

 --- IrodsSession: icommand executed by [otherrods#tempZone] [irepl -S TestResc -R demoResc thirdreplicatest.txt] ---
Assert Command: irepl -S TestResc -R demoResc thirdreplicatest.txt
Expecting EMPTY: ['']
  stdout:
    | Level 0: rsDataObjOpen_impl: hierarchy descending from requested resource name does not have a replica or the replica is inaccessible at this time. [path=[/tempZone/home/otherrods/2026-09-17Z19:03:33--irods-testing-uh3n556j/thirdreplicatest.txt], requested resource name=[TestResc], resolved hierarchy=[demoResc;compResc1;archiveResc1]]
    | Level 1: rsDataObjOpen_impl: hierarchy descending from requested resource name does not have a replica or the replica is inaccessible at this time. [path=[/tempZone/home/otherrods/2026-09-17Z19:03:33--irods-testing-uh3n556j/thirdreplicatest.txt], requested resource name=[TestResc], resolved hierarchy=[demoResc;compResc2;archiveResc2]]
  stderr:
    | 
Unexpected output on stdout
        
FAILED TESTING ASSERTION

The output from irepl appears to be caused by a lack of clearing the rError stack for dynamic PEPs.

The iRODS Rule Language (NREP) contains logic which clears the rError stack. See the following.

• https://github.com/irods/irods/blob/93844a20a28172dbd0b368eb3cccc48a67aa10da/plugins/rule_engines/irods_rule_language/src/irods_rule_language.cpp#L320-L326

That code has existed in the NREP since 4.2.0. If I remove that code, the NREP produces the same failure as the PREP. That indicates that the PREP should do the same thing as the NREP. I suspect the reason why the failure is now visible is due to all of the improvements to the server.