Bugzilla – Full Text Bug Listing
| Summary: | [compiler][1.5] ClassCastException when parsing a CastExpression between an array type and a type variable | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Eclipse Project] JDT | Reporter: | Markus Keller <markus.kell.r> | ||||
| Component: | Core | Assignee: | Philipe Mulet <philippe_mulet> | ||||
| Status: | VERIFIED FIXED | QA Contact: | |||||
| Severity: | normal | ||||||
| Priority: | P3 | ||||||
| Version: | 3.1 | ||||||
| Target Milestone: | 3.1 M5 | ||||||
| Hardware: | PC | ||||||
| OS: | Windows XP | ||||||
| Whiteboard: | |||||||
| Attachments: |
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Created attachment 17058 [details]
Apply on Expression class in HEAD
Cool, that patch does the job. But in the meantime, I found that the other
direction suffers from the same / a similar problem
class F<T> {
void foo(T o) {
int[] x= (int[]) o;
}
}
Stacktrace with patch applied:
java.lang.ClassCastException
at
org.eclipse.jdt.internal.compiler.ast.Expression.checkCastTypesCompatibility(Expression.java:331)
at
org.eclipse.jdt.internal.compiler.ast.CastExpression.resolveType(CastExpression.java:376)
at
org.eclipse.jdt.internal.compiler.ast.LocalDeclaration.resolve(LocalDeclaration.java:201)
...
Olivier - I don't think the patch works. Using the leaf type doesn't provide the right semantics. I have another version in progress, but must still adjust warnings (unsafe cast, unnecessary cast). New behavior implemented. Added regression test: GenericTypeTest#test454. Fixed (will released post today's 2pm integration since too late). Verified in I20050214 |
I20050104-1600 + jdt.core v_530a class F<T> { Object[] objectArr; void foo() { T x= (T) objectArr; } } Error 2005-01-10 21:22:57.662 An internal error occurred during: "Java AST creation". java.lang.ClassCastException at org.eclipse.jdt.internal.compiler.ast.Expression.checkCastTypesCompatibility(Expression.java:300) at org.eclipse.jdt.internal.compiler.ast.CastExpression.resolveType(CastExpression.java:376) at org.eclipse.jdt.internal.compiler.ast.LocalDeclaration.resolve(LocalDeclaration.java:201) at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.resolveStatements(AbstractMethodDeclaration.java:411) at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.resolveStatements(MethodDeclaration.java:160) at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.resolve(AbstractMethodDeclaration.java:389) at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.resolve(TypeDeclaration.java:1014) at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.resolve(TypeDeclaration.java:1063) at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.resolve(CompilationUnitDeclaration.java:280) at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:651) at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:443) at org.eclipse.jdt.core.dom.ASTParser.internalCreateAST(ASTParser.java:708) at org.eclipse.jdt.core.dom.ASTParser.createAST(ASTParser.java:574) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.createAST(ASTProvider.java:563) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:494) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup.calculateASTandInform(SelectionListenerWithASTManager.java:165) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$3.run(SelectionListenerWithASTManager.java:142) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:66)