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| Summary: | [67cat] Internal compiler regression with generics (#2) | ||
|---|---|---|---|
| Product: | java | Reporter: | matthies <matthies> |
| Component: | Compiler | Assignee: | Dusan Balek <dbalek> |
| Status: | RESOLVED WONTFIX | ||
| Severity: | blocker | Keywords: | REGRESSION |
| Priority: | P3 | ||
| Version: | 6.x | ||
| Hardware: | PC | ||
| OS: | Windows XP | ||
| Issue Type: | DEFECT | Exception Reporter: | |
Seems like a regression in the JDK1.7 compiler (1.6 compiles fine, errors while using 1.7). Copy & paste from the e-mail I've got from the javac people: ------------------------------------------------------------------------------------------------------------------------- This seems a regression from 6548436 - cast conversion has a lot of problems in javac - and I'm trying to address them... I guess this is one of those areas in which you do two steps further and a step beyond :-( I might need to spend some time on this - I'll keep you informed as soon as I discover a fix. ------------------------------------------------------------------------------------------------------------------------- Bug in JDK1.7 compiler. WONTFIX on NB side. |
Example: class Test { interface Interval<T extends Comparable<? super T>> { T minimum(); T maximum(); } void f(Object obj) { if (obj instanceof Interval && ((Interval<?>) obj).minimum() instanceof Integer) { // ... } } } The editor shows the following compiler error for the second "instanceof" expression: inconvertible types required: java.lang.Integer found: capture #nnn of ? The code though is correct and compiles without errors with JDK 1.6, and no error is shown by the NetBeans 6.5 editor.