p4raw-id: //depot/perl@33853
/*
re_dup - duplicate a regexp.
- This routine is expected to clone a given regexp structure. It is not
- compiler under USE_ITHREADS.
+ This routine is expected to clone a given regexp structure. It is only
+ compiled under USE_ITHREADS.
After all of the core data stored in struct regexp is duplicated
the regexp_engine.dupe method is used to copy any private data