__librt_multiple_threads for nptl?

[Roland McGrath]

> I was a bit concerned about breaking ABI compatibility changing FR-V
> to use multiple_threads in the TCB, as opposed to using this
> variable, but I'm now convinced it's not an issue.  Am I mistake?

You are talking about the private TCB contents.  That is not part of any
ABI except the GLIBC_PRIVATE interface between libc/ld.so/librt.
We don't consider that an ABI change.