[Bug fortran/66141] Invalid code generation with -O1, -O2, -O3 for x86_64 target for array reference in Fortran COMMON

[george at gly dot bris.ac.uk]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66141

--- Comment #1 from george at gly dot bris.ac.uk ---
uname -m -r -s -p output:
Darwin 13.4.0 x86_64 i386