(no subject)

FreeBSD FBSD10 10.0-CURRENT FreeBSD 10.0-CURRENT #33 r246130: Wed Jan 30 
15:00:08 EST 2013     root_at_FBSD10:/usr/obj/usr/src/sys/MYKERNEL  amd64

I just rebuilt the world and kernel.  Then I rebuilt 
/usr/ports/emulators/virtualbox-ose-kmod.

# kldstat
Id Refs Address            Size     Name
  1   24 0xffffffff80200000 116fac0  kernel
  2    1 0xffffffff81370000 ee74c8   nvidia.ko
  3    3 0xffffffff82258000 1393f8   linux.ko
  4    1 0xffffffff82412000 997d     linprocfs.ko
  5    1 0xffffffff8241c000 344b     ums.ko
  6    1 0xffffffff82420000 29c3     uhid.ko
  7    1 0xffffffff82423000 2e7b0    vboxdrv.ko


# pkg info |grep box
virtualbox-ose-4.2.6           A general-purpose full virtualizer for x86 
hardware
virtualbox-ose-kmod-4.2.6_1    VirtualBox kernel module for FreeBSD

Virtualbox suddenly broke for me, possibly related 
to this:
http://svnweb.FreeBSD.org/base?view=revision&revision=246028

Fix some symbol version mismatches between libstdc++ and 
libsupc++/libcxxrt that were causing the runtime and STL libraries to see 
different versions of various classes and functions when libstdc++ is used as a filter.

When I try to start Vbox it fails with:
# VirtualBox
VirtualBox: Error -610 in supR3HardenedMainInitRuntime!
VirtualBox: dlopen("/usr/local/lib/virtualbox/VBoxRT.so",) failed: 
/usr/lib/libstdc++.so.6: version GLIBCXX_3.4.15 required by 
/usr/local/lib/virtualbox/VBoxRT.so not found


With all due respect to developers, are these changes tested at all before 
they are added to the codebase?

I understand this is a development branch.  I am not a developer, but it 
seems to me more thought and testing should be done before changes like 
this are committed.