http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48086
--- Comment #6 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-03-12 22:49:40 UTC --- Opened radar Bug ID# 9126174 for this issue with builtin-attr-1.s attached as the example of the potential assembler bug in Xcode 3.2.6 and 4.0.1.