Openindiana Hipster oi-build 20150526 echo '$C' | mdb core

$ echo '$C' |  mdb core-thunderbird-20150526
mdb: core file data for mapping at f0dea000 not saved: Bad address
08044a18 libc.so.1`_lwp_kill+0x15(1, 4, 80449b0, 0, fe3fd690, 4)
08044a38 libc.so.1`raise+0x2b(4, 8044a50, 0, 0, 8, 0)
08044a88 libxul.so`_ZN13nsProfileLock18FatalSignalHandlerEiP7siginfoPv+0xeb(4,
8044d2c, 8044b2c, fd229fb0, fef6a804, 46ad192e)
08044ae8 libc.so.1`call_user_handler+0x292(4, 8044d2c, 8044b2c, fe3fd690,
b210678, b2159f0)
08044b18 libc.so.1`sigacthandler+0x77(4, 8044d2c, 8044b2c)
edf76f00 libcalbasecomps.so`__RTTI__1nLcalDateTime_(0, fe221f40, 0, 0, de81fa0,
0)
effeed48 0xeffeb560(fffffff, 40, 0, 0, effef380, effca680)
effef358 4(0, b215fb8, 0, 0, 0, 0)
08410efc 0xeffcd1f0(fc73c600, fc73c5e0, fdcc0c70, fc73c620, fc73ea60, fc73f570)
08405610 0x2d(9, 84055d0, 84054e0, 8416f38, 9, 3460362)
534a736e 0x444943()