Comment 10 for bug 1673976

OK, this can't be as simple as "posix_spawn() fails", because I've just tried the test program from the posix_spawn manpage (http://man7.org/linux/man-pages/man3/posix_spawn.3.html) and that works fine for x86-64 guest, aarch64 guest and armhf guest. In the x86 and armhf cases the libc I have seems to use the NR_vfork syscall, but for aarch64 it uses clone(CLONE_VM | CLONE_VFORK | SIGCHLD, ...) which is what the glibc sources linked in comment #5 do, and that all works fine.

And locale-gen runs fine for my xenial-armhf chroot using current head-of-git QEMU:

root@e104462:/# locale-gen
Generating locales (this might take a while)...
  en_GB.UTF-8... done
Generation complete.

So can I ask that people: (1) please try with current head of git (or with 2.11-rc1, which is almost the same thing); (2) if there's still a problem with localegen or with programs calling posix_spawn() or other real-world code, please provide full repro instructions so I can try to reproduce locally.

I don't think we can make clone() in general work, so oddball demo code like the example program in the clone(2) manpage is out of scope, but there may well be specific cases we can address.