JDK-8168760 : ClassCastException: Type$TypeMapping$3 cannot be cast to Type$WildcardType
- Type: Bug
- Component: tools
- Sub-Component: javac
- Priority: P4
- Status: Resolved
- Resolution: Cannot Reproduce
- OS: generic
- CPU: generic
- Submitted: 2016-10-26
- Updated: 2019-06-17
- Resolved: 2019-06-17
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| JDK 13 |
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13Resolved  |
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Relates :
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Description
In following up this message: http://mail.openjdk.java.net/pipermail/compiler-dev/2016-October/010450.html, Alex Buckley observed:
"on JDK 9b140, javac crashes if the declaration of i uses a
bounded wildcard for B's type argument -- say B<? extends Number>.I"
I verified that claim against JDK9 tip using this case:
class A<X> { class I {} }
class Test {
class B<Y> extends A<Y[]> {}
B<? extends Number>.I i;
}
and I am able to reproduce the crash:
java.lang.ClassCastException: com.sun.tools.javac.code.Type$TypeMapping$3 (in module: jdk.compiler) cannot be cast to com.sun.tools.javac.code.Type$WildcardType (in module: jdk.compiler)
at com.sun.tools.javac.comp.Attr$TypeAnnotationsValidator.validateAnnotatedType(jdk.compiler@9-internal/Attr.java:4805)
at com.sun.tools.javac.comp.Attr$TypeAnnotationsValidator.validateAnnotatedType(jdk.compiler@9-internal/Attr.java:4766)
at com.sun.tools.javac.comp.Attr$TypeAnnotationsValidator.visitVarDef(jdk.compiler@9-internal/Attr.java:4677)
at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(jdk.compiler@9-internal/JCTree.java:936)
at com.sun.tools.javac.tree.TreeScanner.scan(jdk.compiler@9-internal/TreeScanner.java:49)
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