> It sounded like this isn't difficult to reproduce, or at least you've done > so a couple times already. I suggest rebuilding libpthread with gcc > instead of clang and see if it's equally reproducible. If not, well, you > can get done what you originally were trying to do with iperf...
I've rebuilt libpthread with gcc, and it's still reproducible, though I'm now not finding any coredumps... Ayaka