[Bug target/58269] [4.9 Regression] ICE when building libobjc on x86_64-apple-darwin* after revision 201915

[iains at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58269

--- Comment #9 from Iain Sandoe <iains at gcc dot gnu.org> ---
patch for the remainder of the fix posted at:
http://gcc.gnu.org/ml/gcc-patches/2013-09/msg00384.html