The ... in the qbarray.h example gets into the v2.0.2 man page unescaped, leading to the

$ man --warnings ./qbarray.h.3.gz >/dev/null
troff: <standard input>:13: warning: macro '..' not defined

and it's indeed missing from the output. In the v2.0.1 man page it's protected as \&.\&.\&. (which is arguably too much caution) and appears correctly.