JDK-8052070 : javac crashes when there are duplicated type parameters
- Type: Bug
- Component: tools
- Sub-Component: javac
- Affected Version: 8,9
- Priority: P3
- Status: Closed
- Resolution: Fixed
- Submitted: 2014-07-25
- Updated: 2025-10-27
- Resolved: 2015-01-20
The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 9 |
|---|
9 b48Fixed  |
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Description
Consider the following code:
---
public class Main<A, A, T> {
}
---
Compiling it with:
$ javac -fullversion
javac full version "1.8.0-b132"
Leads to:
An exception has occurred in the compiler (1.8.0). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.NullPointerException
at com.sun.tools.javac.comp.MemberEnter.baseEnv(MemberEnter.java:1385)
at com.sun.tools.javac.comp.MemberEnter.complete(MemberEnter.java:1046)
at com.sun.tools.javac.code.Symbol.complete(Symbol.java:560)
at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1024)
at com.sun.tools.javac.code.Symbol$ClassSymbol.flags(Symbol.java:960)
at com.sun.tools.javac.code.Symbol$ClassSymbol.getKind(Symbol.java:1088)
at com.sun.tools.javac.code.Kinds.kindName(Kinds.java:162)
at com.sun.tools.javac.comp.Check.duplicateError(Check.java:327)
at com.sun.tools.javac.comp.Check.checkUnique(Check.java:3370)
at com.sun.tools.javac.comp.Enter.visitTypeParameter(Enter.java:458)
at com.sun.tools.javac.tree.JCTree$JCTypeParameter.accept(JCTree.java:2218)
at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:262)
at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:276)
at com.sun.tools.javac.comp.Enter.visitClassDef(Enter.java:422)
at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:687)
at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:262)
at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:276)
at com.sun.tools.javac.comp.Enter.visitTopLevel(Enter.java:338)
at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:518)
at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:262)
at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:276)
at com.sun.tools.javac.comp.Enter.complete(Enter.java:490)
at com.sun.tools.javac.comp.Enter.main(Enter.java:475)
at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:985)
at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
at com.sun.tools.javac.main.Main.compile(Main.java:523)
at com.sun.tools.javac.main.Main.compile(Main.java:381)
at com.sun.tools.javac.main.Main.compile(Main.java:370)
at com.sun.tools.javac.main.Main.compile(Main.java:361)
at com.sun.tools.javac.Main.compile(Main.java:56)
at com.sun.tools.javac.Main.main(Main.java:42)
Comments
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