http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55142
--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> 2012-10-31 13:10:02 UTC --- -maddress-mode=long is new in 4.8. GCC 4.7 only implements -maddress-mode=long equivalent. I backported -maddress-mode=long to hjl/x32/gcc-4_7-branch branch: http://gcc.gnu.org/git/?p=gcc.git;a=summary