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As a practical example to 4ad's answer, here is the result of NULL-pointer dereference on the C code on my system (Arch Linux 3.9.2-1-ARCH). It does yield a SEGFAULT:

http://play.golang.org/p/uoBKsRIJB7

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Thanks exch, that's really decent of you to construct an example.

I wonder that if there are multiple threads / goroutines are their callchains also printed ?

It seems it doesn't go into a lot of detail as to the call-chain for each running goroutine, but this example may just not be very suitable to properly test it. Either way, here is the same deal with a bunch of running goroutines.

http://play.golang.org/p/GQxdXpWdZD

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