https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66523 --- Comment #1 from Jack Howarth <howarth.at.gcc at gmail dot com> --- Previously filed as radr://21323034, "the new clang-based assembler in Xcode 7 on 10.11 fails on the NXConstStr.s file from FSF gcc 5.1"