Firefox 49.0_5,1 crash on startup

[João Neves]

Hi,

Upgraded to Firefox 49.0_5,1 from ports on my 10.3 x86_64 installation
running on VirtualBox, where a previous version was running OK recently and
now Firefox immediately fails to start up, no core dump or any other
information.

I enabled the DEBUG config option to try and get some sort of output, but I
only get:

nsStringStats
 => mAllocCount:              8
 => mReallocCount:            1
 => mFreeCount:               1  --  LEAKED 7 !!!
 => mShareCount:              4
 => mAdoptCount:              0
 => mAdoptFreeCount:          0
 => Process ID: 10931, Thread ID: 34403848192

The only non-standard option I am currently using is DBUS=off.

My make.conf is as follows:

DEFAULT_VERSIONS+=ssl=libressl
DEFAULT_VERSIONS+=linux=c6_64

Cheers.

--
João Neves