https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89667
--- Comment #4 from joseph at codesourcery dot com <joseph at codesourcery dot
com> ---
On Fri, 15 Mar 2019, rick at regreer dot net wrote:
> But can you explain why:
>
> static char *foo[] = { (char []){"this compiles ..."} };
>
> void but() { static char *bar[] = { (char []){"this doesn't!"} }; }
>
> I.e, why is the (char []) a non-constant element when it appears in a
> function?
A compound literal outside a function is an object with static storage
duration, so has a constant address.
A compound literal inside a function is an object with automatic storage
duration, so has an address (on the stack) only determined on entry to the
function, so cannot be used in a static initializer.
