[Bug tree-optimization/106247] GCC12 warning in Eigen: array subscript is partly outside array bounds

[mwd at md5i dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106247

--- Comment #8 from Michael Duggan <mwd at md5i dot com> ---
Created attachment 53533
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53533&action=edit
Reduced bug exemplar