Overrides a member function but is not marked override - Rebuild of the Debian archive with clang

"Overrides a member function but is not marked override" build failure(s)
clang 12.0.1

Versions: 2.9 - 3.0 - 3.1 - 3.2 - 3.3 - 3.4 - 3.4.2 - 3.5.0 - 3.6.0 - 3.8.1 - 3.9.1 - 4.0.1 - 5.0 - 6.0 - 8.0.1 - 9.0.1 - 10.0.0 - 11.0.0 - 12.0.1 - 13.0.0

Package	Version	Supposed error message	Full log	Bug report
hyperrogue	12.0f-1	fake.cpp:86:24: error: 'get_corner' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]	Log

1 errors

Debian Package rebuild