### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java,v
retrieving revision 1.408
diff -u -r1.408 ProblemReporter.java
--- compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	18 Mar 2010 16:22:38 -0000	1.408
+++ compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	6 Apr 2010 19:11:05 -0000
@@ -2141,7 +2141,12 @@
 public void illegalInstanceOfGenericType(TypeBinding checkedType, ASTNode location) {
 	TypeBinding erasedType = checkedType.leafComponentType().erasure();
 	StringBuffer recommendedFormBuffer = new StringBuffer(10);
-	recommendedFormBuffer.append(erasedType.sourceName());
+	if (erasedType instanceof ReferenceBinding) {
+		ReferenceBinding referenceBinding = (ReferenceBinding) erasedType;
+		recommendedFormBuffer.append(referenceBinding.qualifiedSourceName());
+	} else {
+		recommendedFormBuffer.append(erasedType.sourceName());
+	}
 	int count = erasedType.typeVariables().length;
 	if (count > 0) {
 		recommendedFormBuffer.append('<');
#P org.eclipse.jdt.core.tests.compiler
Index: src/org/eclipse/jdt/core/tests/compiler/regression/GenericTypeTest.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/GenericTypeTest.java,v
retrieving revision 1.817
diff -u -r1.817 GenericTypeTest.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/GenericTypeTest.java	18 Mar 2010 16:22:35 -0000	1.817
+++ src/org/eclipse/jdt/core/tests/compiler/regression/GenericTypeTest.java	6 Apr 2010 19:11:13 -0000
@@ -31,7 +31,7 @@
 	// All specified tests which does not belong to the class are skipped...
 	static {
 //		TESTS_NAMES = new String[] { "test1245" };
-//		TESTS_NUMBERS = new int[] { 1455 };
+//		TESTS_NUMBERS = new int[] { 1460 };
 //		TESTS_RANGE = new int[] { 1097, -1 };
 	}
 	public static Test suite() {
@@ -50153,4 +50153,31 @@
 		"Type safety: Unchecked invocation someMethod() of the generic method someMethod() of type Bug268798\n" + 
 		"----------\n");
 }
+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=307885
+public void test1460() {
+	this.runNegativeTest(
+		new String[] {
+			"Test.java",
+			"class Test<A> {\n" + 
+			"    interface MyInt<K> {\n" + 
+			"        K getKey();\n" + 
+			"    }\n" + 
+			"    class MyEntry implements MyInt<A> {\n" + 
+			"        public A getKey() { return null; }\n" + 
+			"        @Override\n" + 
+			"        public boolean equals(Object o) {\n" + 
+			"            if(!(o instanceof MyEntry))\n" + 
+			"                return false;\n" + 
+			"            return true;\n" + 
+			"        }\n" + 
+			"    }\n" + 
+			"}"
+		},
+		"----------\n" + 
+		"1. ERROR in Test.java (at line 9)\n" + 
+		"	if(!(o instanceof MyEntry))\n" + 
+		"	    ^^^^^^^^^^^^^^^^^^^^^^\n" + 
+		"Cannot perform instanceof check against parameterized type Test<A>.MyEntry. Use the form Test.MyEntry instead since further generic type information will be erased at runtime\n" + 
+		"----------\n");
+}
 }
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