Bug ID: JDK-5041784 (reflect) generic signature methods needlessly return generic arrays

Type: Bug
Component: core-libs
Sub-Component: java.lang:reflect
Affected Version: 5.0

Priority: P3
Status: Closed
Resolution: Fixed
OS: generic,solaris_8,windows_xp
CPU: generic,x86

Submitted: 2004-05-04
Updated: 2012-09-28
Resolved: 2011-05-17

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JDK 7
7 b36Fixed

the generic reflection methods return type GenericArrayType in cases when they
could simply return an array class - that is, the element type is not generic.
I think it would be preferable in that case for them to return the non-generic
type.

EVALUATION Suggested fix has been applied to JDK 7.
27-08-2008
SUGGESTED FIX --- a/src/share/classes/sun/reflect/generics/factory/CoreReflectionFactory.java +++ b/src/share/classes/sun/reflect/generics/factory/CoreReflectionFactory.java @@ -25,6 +25,7 @@ package sun.reflect.generics.factory; +import java.lang.reflect.Array; import java.lang.reflect.Constructor; import java.lang.reflect.GenericDeclaration; import java.lang.reflect.Method; @@ -118,7 +119,10 @@ } public Type makeArrayType(Type componentType){ - return GenericArrayTypeImpl.make(componentType); + if (componentType instanceof Class<?>) + return Array.newInstance((Class<?>) componentType, 0).getClass(); + else + return GenericArrayTypeImpl.make(componentType); } public Type makeByte(){return byte.class;}
13-06-2008
CONVERTED DATA BugTraq+ Release Management Values COMMIT TO FIX: dragon
14-06-2004
EVALUATION The suggested change would be preferable but not crucial for Tiger. ###@###.### 2004-05-19
19-05-2004

Duplicate :	JDK-5003398 - (reflect) getGenericParameterTypes() should return GenericArrayType
Duplicate :	JDK-6202725 - (reflect) java.lang.reflect.GenericArrayType is found where byte[].class was expected
Relates :	JDK-6710498 - MXBeans trip over reflection bug when constructor has arrays and generics as parameters
Relates :	JDK-6600709 - MXBeans: SortedMap fails when V is an array of primitives