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Re: Function/alias recursion


From: Eric Blake
Subject: Re: Function/alias recursion
Date: Tue, 16 Jan 2007 06:34:08 -0700
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According to Tim Waugh on 1/16/2007 5:45 AM:
> What is the intended behaviour for this sort of thing?:

Infinite recursion, within the limits of your stack.

> 
> $ cat <<"EOF" >trouble
> hello ()
> {
>     pwd
> }
> alias pwd="hello"
> EOF


> The behaviour I've observed with bash-3.2 and several earlier releases
> is that bash consumes all available memory and then crashes.

And why not?  It's the same as doing this in C:
int foo()
{
  return foo();
}

Bash can't protect you from yourself (or put differently, the halting
problem is undecidable).

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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