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List:       openjdk-jdk7-dev
Subject:    Re: Infloop in javac on invalid source
From:       Jonathan Gibbons <jonathan.gibbons () oracle ! com>
Date:       2013-05-11 17:15:48
Message-ID: 518E7CC4.9010807 () oracle ! com
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Martin,

Thank you. I have filed JDK-8014380 to track this issue.

-- Jon

On 05/10/2013 04:51 PM, Martin Buchholz wrote:
> Hi javac folk!
>
> This is a bug report for a serious bug: an infinite loop in javac that 
> appears to have been introduced into jdk7 (also repro'd in dk8) 
> relatively recently, as discovered by my colleague Raluca.  She 
> suspects this commit:
>
> http://hg.openjdk.java.net/jdk7u/jdk7u/langtools/rev/4baab658f357
>
> #!/bin/bash
> set -eu
>
> mkdir -p /tmp/t9/baz
> cd /tmp/t9
>
> cat > A.java <<'EOF'
> import java.util.Map;
> import java.util.Set;
> import baz.Baz;
> public class A {
>    private static class Foo<M extends Map, S extends Set> extends 
> Bar<M, S> {
>        @Override void run() {}
>    }
>    private static class Bar<M extends Map, S extends Set> extends 
> Baz<M, S> {
>        @Override void run() { }
>    }
> }
> EOF
>
> cat > baz/Baz.java <<'EOF'
> package baz;
> import java.util.Map;
> public class Baz <M extends Map> {
>    void run() { }
> }
> EOF
>
> javac baz/Baz.java
> jar cvf libbaz.jar baz/Baz.class
> javac -cp libbaz.jar A.java
>

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