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From:	"Tim Van Holder" <tim DOT van DOT holder AT pandora DOT be>
To:	<djgpp-workers AT delorie DOT com>
Subject:	Weird system() thing (was Re: The Bash 2.05 fixinc.sh bug)
Date:	Sun, 16 Dec 2001 19:59:58 +0100
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> It can be reproduced in a nice 3 line makefile:
> 
> SHELL = /bin/sh
> all:
>         MAKE="$(MAKE)"
> 
> make on this with bash being 2.04 works fine, on 2.05 gives the binary
> file error (using bash 2.05 from cvs build directory on clio).  Yes,
> that's a tab before the MAKE.

I tried to see if this was relatd to system() in
any way, and clearly it was not (system("FOO=$FOO") works fine).

But I did find a different, very weird bug (which I don't recall being
mentioned before): while

int
main(void)
{
  system("");
}

and

int
main(void)
{
  system("Foo=bar");
}


both, as expected, spawn a single instance of command.com, and exit
after
that shell is exited, the following does not:

int
main(void)
{
  system("");
  system("Foo=bar");
}

I'd expect this to run command.com, when that's exited run it again, and
then exit.  But instead I get a seemingly infinite series of
command.coms;
the only way to get out seems to be to type Ctrl-C, as that causes the
executable to SIGINT out after exiting the subshell.

This is with straight clio packages for djdev & gcc3.  It does not
happen
with two 'system("")' calls.

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