The flexible array addition looks great to me. Thank you!
Great. I'll commit the patch.
Actually, there is one other thing that might be wort mentioning
about flexible array members.
The type and mangling of flexible array members has changed. While
in GCC 5 and prior the type of a flexible array member is an array
of zero elements (a GCC extension), in 6 it is that of an array of
an unspecified bound (i.e., T[] as opposed to T[0]). This is
a silent ABI change with no -fabi-version/-Wabi option.
Martin
