[Bug middle-end/121831] [15/16 regression] ICE when building melonds-1.0 with LTO (expand_expr_real_2, at expr.cc:9779)

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121831

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note fixing the ODR issue:
```
extern const std::array<unsigned char, 256> MRAMRead16Bursts[3];
```

Fixes the ICE.