http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55693
--- Comment #38 from Jack Howarth <howarth at nitro dot med.uc.edu> 2013-01-24 05:54:24 UTC --- Tested proposed patch from Comment 37 on x86_64-apple-darwin11 and x86_64-apple-darwin12 with Xcode 4.5.2 on both systems. No regressions are found with either.... make -k check RUNTESTFLAGS="tm.exp --target_board=unix'{-m32,-m64}'" in darwin_objdir/gcc build directory or with.... make -k check RUNTESTFLAGS="--target_board=unix'{-m32,-m64}'" in darwin_objdir/x86_64-apple-darwin11.4.2/libitm build directory. Looks good to go.