[Bug rtl-optimization/68755] [5 Regression] wrong code at -O3 on x86_64-linux-gnu (in 32-bit mode)

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68755

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to ktkachov from comment #4)
> 
> but the e[8000] is inside the "while (a)" loop and should not be reachable
> since 'a' is always 0?

'a' can be initialized via a constructor.