http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52179
--- Comment #20 from Mike Stump <mikestump at comcast dot net> 2012-02-23 18:45:28 UTC --- > Where do you want the second change made? Let me repeat myself: the code is in boehm-gc/include/private/gcconfig.h, so the patch should change the ifdef DARWIN block there. In the code in the file I mentioned, as a replacement to the #define that exists today.