https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98552

--- Comment #3 from Tobias Schlüter <tobi at gcc dot gnu.org> ---
Don't ask how long I'd been staring at the assembly in disbelief until I
figured out what had gone wrong :-)

In this particular case the problem can be addressed by passing &j into the
function instead of &i, so I wonder why the Fortran f.e. can't do that?  One
possible problem is that if j's address escapes (in the sense that the compiler
assumes that subsequent function calls can do whatever to it), you'd need a new
fake memory location.

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