Bugzilla – Full Text Bug Listing
| Summary: | Compiler fails on Inner classes in generic class | ||
|---|---|---|---|
| Product: | [Eclipse Project] JDT | Reporter: | Radim Kolar <hsn> |
| Component: | Core | Assignee: | JDT-Core-Inbox <jdt-core-inbox> |
| Status: | CLOSED WONTFIX | QA Contact: | |
| Severity: | minor | ||
| Priority: | P3 | CC: | amj87.iitr |
| Version: | 3.8 | ||
| Target Milestone: | --- | ||
| Hardware: | PC | ||
| OS: | Windows XP | ||
| Whiteboard: | stalebug | ||
Radim, This is a correct syntax error. See that javac 7 also gives the same error. However, the wording of the error in this case is not correct in eclipse. We say "Cannot perform instanceof check against parameterized type ChainItem. Use the form ChainItem instead since further generic type information will be erased at runtime". The suggestion in the second sentence is absurd. This happens because in normal cases ChainItem will have been a parameterized class and we'd have suggested to use the parameterized form of this class. However, here it is an inner class and is not even parameterized, but is considered as parameterized since it is enclosed by a parameterized class. Srikanth, can you check whether this latter part is spec'd or a bug? Thanks! You are right. Java 7 give error too while Java 6 do not. Reducing to minor, since only wording needs to be changed. This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. As such, we're closing this bug. If you have further information on the current state of the bug, please add it and reopen this bug. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie. |
Build Identifier: M20120208-0800 this code compiles with javac 1.6 but not Eclipse. Eclipse returns error: Cannot perform instanceof check against parameterized type ChainItem. Use the form ChainItem instead since further generic type information will be erased at runtime class test <M> { public synchronized void createChain() { final class ChainItem { protected String name; protected String before; protected String after; /** * ChainItem objects match if their name is same * @see java.lang.Object#equals(java.lang.Object) */ @Override public boolean equals(Object obj) { ChainItem other; if (obj instanceof ChainItem) return true; // TODO Auto-generated method stub return false; } } } } Reproducible: Always