http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54248
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-08-14 08:01:44 UTC --- > Should this comment really be talking about boost? N.B. I don't see any actual harm in talking about Boost, seeing as the concept checking code came straight from there. We don't want to remove other references such as the credit in <bits/boost_concept_check.h> // GCC Note: based on version 1.12.0 of the Boost library. So I'm in two minds whether to "fix" the other comment.