>From the three manpages reported as missing on #84169, two of them (catchsegv and glibcbug) have them now, and the other (lddlibc4) still does not have undocumented(7) linked to it.
So it would be sensible to remove the first two from the bug report title and make lddlibc4 point to undocumented(7) until it has its own one.
