I tried moving <boost/regex.hpp> to be the first include statement, but got the same error.
 
I tried the following compile statement:
 
/usr/vacpp/bin/xlc++  -c -DNDEBUG -O3 -qstrict -qinline  -qnotempinc -qfuncsect -qeh -qrtti regex.cpp -o regex -I /usr/local/include
 
and again got the same error as before.
 
Any other suggestions?
What is the ETA of the fix you mentioned.