Hi all,

I'm attempting to embed julia in a MATLAB MEX file. Everything is going 
great, but MATLAB will sometimes segfault after having run some code 
calling Julia.* I believe I have narrowed it down to this 
issue: http://ubuntuforums.org/showthread.php?t=2093057 . Basically, I 
believe Julia is registering a SIGSEGV (or maybe other signal?) handler 
that overwrites the default for the JVM set by MATLAB. after the Julia 
function is done, that memory is freed. Then a segfault (or maybe other 
signal?) happens in the JVM and it tries to call Julia's handler but 
segfaults (again) as it is no longer there. 

Can anyone help me find a workaround? Perhaps if there's a way to 
"deregister" the handler, or if someone knows a way to get the current 
handler (before calling into Julia) and then setting it back to that after 
Julia is done.

I've never dealt with signals in C before so I apologize if I'm describing 
things incorrectly or missing something.

Thanks,
Eric

*I am able to reliably reproduce this by running any MEX function linking 
to Julia and calling jl_init, then calling `help clear` in MATLAB.

P.S.: I'm on Mac OS X 10.10 with MATLAB R2012b and Julia v0.3.6/v0.4.0-dev

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