https://gcc.gnu.org/bugzilla/show_bug.cgi?id=17995
--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> --- It can't be this exact error, because the line number will have changed, and it would be useful to know the exact line numbers where the errors happen with the current sources (we have three different versions of <cstring> and without checking some config files I wouldn't know which is being used on SCO ... maybe using a different one would solve the problem). Please either provide the error here or email it to me separately so I can see the *exact* error, not a similar one from GCC 3.4.2 a decade ago. I'll take a look, but since I don't have a SCO machine I need more info from you.
