Bug 750301 - Covariant interface inheritance is broken in javac
Summary: Covariant interface inheritance is broken in javac
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Fedora
Classification: Fedora
Component: java-1.6.0-openjdk
Version: 15
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Deepak Bhole
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-10-31 16:10 UTC by Christoph Höger
Modified: 2012-08-07 15:57 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-08-07 15:57:13 UTC
Type: ---


Attachments (Terms of Use)

Description Christoph Höger 2011-10-31 16:10:42 UTC
Description of problem:

The following code is rejected by the javac:

public interface A {
    A foo();
}

public interface B {
    B foo();
}

public interface C extends A, B {
    @Override
    C foo();
}

Albeit it should be accepted (and eclipse's internal java frontend _does_ accept it). 

There seems to be a fix for this kind of problems in Java 7:

http://hg.openjdk.java.net/jdk7/jdk7/langtools/rev/4a3b9801f7a0

Please backport this fix.

Version-Release number of selected component (if applicable):
java-1.6.0-openjdk-devel-1.6.0.0-60.1.10.4.fc15.x86_64

How reproducible:
always

Steps to Reproduce:
1. Invoke javac on the classes above
  
Actual results:
Type error complaining about A and B being incompatible

Expected results:
.class files for all input files

Comment 1 Fedora End Of Life 2012-08-07 15:57:15 UTC
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