Date: Sat, 23 Oct 1999 14:34:37 -0600 From: Nate Williams <nate@mt.sri.com> To: Vince Gonzalez <vince@nycrc.net> Cc: freebsd-java@FreeBSD.ORG Subject: Re: Illegal instruction Message-ID: <199910232034.OAA09116@mt.sri.com> In-Reply-To: <19991023155032.A1350@moe.nycrc.net> References: <19991023155032.A1350@moe.nycrc.net>
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> I wrote some code like this:
>
> public class MyPanel extends JPanel {
> public Component add(Component c) {
> doSomeStuff();
> return add(c); // This is incorrect on purpose
> }
> }
>
> I know the line I've commented is incorrect (it should say super.add(c)).
> When this code is run, java_X bombs out with SIGILL and dumps core. I'm
> thinking that it should instead die with StackOverflowError. I can reproduce
> this very easily, with code very much like the above.
I attemped to reproduce this with the following trivial example, and
Java behaves as expected with the StackOverflowError.
public class Extended extends Base {
public static void main(String args[]) {
new Extended().foo(new Object());
}
public Object foo(Object a) {
return foo(a);
}
}
public class Base {
public Object foo(Object a) {
return foo(a);
}
}
% java -fullversion
java_X full version "jdk1.1.8-FreeBSD:1999/9/22"
% uname -a
FreeBSD moth.mt.sri.com 2.2.8-STABLE FreeBSD 2.2.8-STABLE #4: Tue Jan 26
16:02:55 MST 1999 nate@moth.mt.sri.com:/opt/src/sys/compile/MOTH i386
%
[ Note, it's possible that this bug was fixed in the most recent JDK
release, hence my earlier question about java -fullversion.... ]
Nate
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