I tried moving 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.

It's in cvs now as a branch called "regex5", once you have a cvs working copy you can get that with: cvs update -rregex5 boost/regex libs/regex I'm mostly working on docs now, so I hope to merge with the mainline cvs around Christmas. John.