Hi Pierre,

locale_charset, implemented in groff, uses nl_langinfo(CODESET)--and just a few
days ago we had a bug report that CP437 doesn't work there.  Maybe it's related.

(libs/libgroff/localcharset.c's locale_charset looks overly complicated, WTF?)

Maybe argv[0] is still the cause, but try setting the environment variable
LC_ALL to "C" to disable locales before invoking "man".  Does this make it not
crash?