[Bug c++/114450] -Wunused-but-set-variable false positive of static variable initialized by a lambda used by a generic lambda

[olof.gullnas at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114450

--- Comment #4 from Olof Gullnäs <olof.gullnas at gmail dot com> ---
(In reply to Andrew Pinski from comment #2)
> Reduced testcase:
> ```
> 
> template <typename F>
> void foreach(F f) {f(1);}
> 
> void g ()
> {
>     static constexpr auto lambda_2 = [](int) { };
>     auto lambda_1 = [](auto id) { lambda_2(id); };
>     foreach(lambda_1);
> }
> ```

Nice reduction!