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Re: Segfault on recursive trap/kill

From: Mike Gerwitz
Subject: Re: Segfault on recursive trap/kill
Date: Sun, 07 Oct 2018 13:21:34 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)

On Sun, Oct 07, 2018 at 08:52:25 +0200, Valentin Bajrami wrote:
> As earlier expained, you are calling foo function recursively. To mitigate
> this behaviour you simple set FUNCNEST=<N> foo() { foo; }; foo where N
> denotes the number of nested functios to be called.

This is perfect and clear behavior, actually:

  $ FUNCNEST=10; foo() { foo; }; foo
  bash: foo: maximum function nesting level exceeded (10)

If bash were to set a default value for FUNCNEST then a useful error
would be provided rather than segfaulting (and possibly triggering a
coredump).  Of course, if bash itself is sharing a stack with the
interpreter, then it's hard to come up with a good predetermined value.

FUNCNEST doesn't seem to work with the issue of recursive traps, though

Mike Gerwitz

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