[boost] [xpressive][test_cycles.cpp]regex_impl<...>::instances not reset

From: Larry Evans (cppljevans_at_[hidden])
Date: 2007-05-26 11:56:37

In:

 
http://boost.cvs.sourceforge.net/boost/boost/libs/xpressive/test/test_cycles.cpp

the regexp_impl<...>::instances variable is not reset to 0 between
tests; so, if the first fails, the test will indicate that all
fail, AFAICT.