JDK-6358534 : Cast involving raw superclass not recognized as unchecked
  • Type: Bug
  • Component: tools
  • Sub-Component: javac
  • Affected Version: 6
  • Priority: P2
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2005-12-02
  • Updated: 2010-04-02
  • Resolved: 2006-01-07
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Other JDK 6
5.0u7Resolved 6 b67Fixed
Related Reports
Relates :  
JDK-4916620 - legal cast is rejected
Description
This program doesn't compile:

interface MyInterface<V> { }
                 
class MyImpl implements MyInterface {
    MyInterface<Integer> o1 = (MyInterface<Integer>) (MyImpl)null;
    MyImpl o2 = (MyImpl) (MyInterface<Integer>)null;
}
Comments
SUGGESTED FIX http://sa.sfbay.sun.com/projects/langtools_data/mustang/6358534/
26-01-2006
SUGGESTED FIX --- /tmp/geta4866 2005-12-03 00:24:06.326797856 +0530 +++ src/share/classes/com/sun/tools/javac/code/Types.java 2005-12-03 00:24:04.947007616 +0530 @@ -898,7 +898,7 @@ return true; } } - return false; + return isSubTypeUnchecked(a, b, warn); } // Sidecast
02-12-2005
EVALUATION This is a bug and was caused by the changes for 4916620.
02-12-2005