URL:
https://github.com/SSSD/sssd/pull/5593
Title: #5593: BUILD: prefer PCRE2 over PCRE
alexey-tikhonov commented:
"""
Under valgrind:
```
ERROR: test_ipa_subdom_server
```
"""
See the full comment at
https://github.com/SSSD/sssd/pull/5593#issuecomment-823040655