https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62006
--- Comment #9 from Thomas Köppe <tkoeppe at google dot com> --- Argh, yes, I compiled the wrong file... indeed, the arena version works with GCC 4.8.2 for me, too, and in Clang as well. So... not an issue, I suppose? The desired real application will be for containers allocated in shared memory, which is presumably obtained from some opaque system feature.