https://bugs.openldap.org/show_bug.cgi?id=9916
--- Comment #19 from glaubitz@physik.fu-berlin.de --- (In reply to Howard Chu from comment #18)
See https://git.openldap.org/openldap/openldap/-/merge_requests/582
Shuts up the -fsanitize=undefined errors for MDB_page.
I can confirm that this fixes the issue on sparc64 for me. Thanks!