[Bug tree-optimization/71359] [7 Regression] ICE at -Os and above in 32-bit and 64-bit modes on x86_64-linux-gnu (Segmentation fault, vec_safe_length)

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71359

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Also ICEs if I change
char a[];
to
char a[1];