https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84587
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jason Merrill from comment #2)
> The testcase has undefined behavior; the initializer_list array only lives
> until the end of the initialization of 'a'.
>
> 11.6.4p6: The array has the same lifetime as any other temporary object
> (15.2), except that initializing an initializer_list object from the array
> extends the lifetime of the array exactly like binding a reference to a
> temporary.
>
> 15.2p6.9: A temporary object bound to a reference parameter in a function
> call (8.5.1.2) persists until the completion of the full-expression
> containing the call.
>
> The code can be fixed by explicitly extending the initializer_list lifetime,
> e.g.
>
> std::initializer_list<const char> il = {'a', 'b', 'c'};
> ArrayView<const char> a (il);
Thank you Jason for nice clarification ;)
