[issue8863] Display Python backtrace on SIGSEGV, SIGFPE and fatal error

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

> One other concern: many OSes (e.g. Linux distributions) implement
> some kind of system-wide crash-catching utility; ...

Even if it would be possible to call the original signal handler, I think that it would be better to just disable this feature if a (better?) program also watchs for segfaults.

We should provide different ways to enable and/or disable this feature:
 - command line option? (eg. see issue #10089)
 - environment variable?
 - add a function to the sys module (or another module) to enable or disable this feature? (eg. sys.getsegfaultenabled(), sys.setsegfaultenabled(False))

I don't think that a command line option and an environment variable is pratical for an OS distributor.

With a sys function, the OS distributor can call it in the site module.

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<http://bugs.python.org/issue8863>
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