### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/lookup/MethodVerifier15.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/lookup/MethodVerifier15.java,v
retrieving revision 1.109
diff -u -r1.109 MethodVerifier15.java
--- compiler/org/eclipse/jdt/internal/compiler/lookup/MethodVerifier15.java	19 Feb 2010 10:14:13 -0000	1.109
+++ compiler/org/eclipse/jdt/internal/compiler/lookup/MethodVerifier15.java	22 Feb 2010 09:40:39 -0000
@@ -130,8 +130,11 @@
 				problemReporter().unsafeReturnTypeOverride(concreteMethod, originalInherited, this.type);
 
 		// check whether bridge method is already defined above for interface methods
+		// skip generation of bridge method for current class & method if an equivalent
+		// bridge will be/would have been generated in the context of the super class since
+		// the bridge itself will be inherited. See https://bugs.eclipse.org/bugs/show_bug.cgi?id=298362
 		if (originalInherited.declaringClass.isInterface()) {
-			if ((concreteMethod.declaringClass == this.type.superclass && this.type.superclass.isParameterizedType())
+			if ((concreteMethod.declaringClass == this.type.superclass && this.type.superclass.isParameterizedType() && !areMethodsCompatible(concreteMethod, originalInherited))
 				|| this.type.superclass.erasure().findSuperTypeOriginatingFrom(originalInherited.declaringClass) == null)
 					this.type.addSyntheticBridgeMethod(originalInherited, concreteMethod.original());
 		}
#P org.eclipse.jdt.core.tests.compiler
Index: src/org/eclipse/jdt/core/tests/compiler/regression/MethodVerifyTest.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/MethodVerifyTest.java,v
retrieving revision 1.196
diff -u -r1.196 MethodVerifyTest.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/MethodVerifyTest.java	11 Nov 2009 05:38:49 -0000	1.196
+++ src/org/eclipse/jdt/core/tests/compiler/regression/MethodVerifyTest.java	22 Feb 2010 09:40:47 -0000
@@ -10731,4 +10731,101 @@
 		"Name clash: The method put(K, V) of type OverrideBug<K,V> has the same erasure as put(K, V) of type Map<K,V> but does not override it\n" + 
 		"----------\n");
 }
+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=298362
+public void test205() {
+	this.runConformTest(
+		new String[] {
+			"Tester.java",
+			"import java.lang.reflect.Method;\n" +
+			"\n" +
+			"public class Tester {\n" +
+			"\n" +
+			" public static interface Converter<T> {\n" +
+			"   T convert(String input);\n" +
+			" }\n" +
+			"\n" +
+			" public static abstract class EnumConverter<T extends Enum<T>> implements Converter<Enum<T>> {\n" +
+			"   public final T convert(String input) {\n" +
+			"     return null;\n" +
+			"   }\n" +
+			" }\n" +
+			"\n" +
+			" public static class SomeEnumConverter extends EnumConverter<Thread.State> {\n" +
+			" }\n" +
+			"\n" +
+			" public static void main(String[] args) throws Exception {\n" +
+			"   Method m = SomeEnumConverter.class.getMethod(\"convert\", String.class);\n" +
+			"   System.out.println(m.getGenericReturnType());\n" +
+			" }\n" +
+			"\n" +
+			"}\n"
+
+		},
+		"T");
+}
+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=298362 (variation)
+public void test206() {
+	this.runConformTest(
+		new String[] {
+			"Tester.java",
+			"import java.lang.reflect.Method;\n" +
+			"\n" +
+			"public class Tester {\n" +
+			"\n" +
+			" public static interface Converter<T> {\n" +
+			"   T convert(String input);\n" +
+			" }\n" +
+			"\n" +
+			" public static abstract class EnumConverter<T extends Enum<T>> implements Converter<T> {\n" +
+			"   public final T convert(String input) {\n" +
+			"     return null;\n" +
+			"   }\n" +
+			" }\n" +
+			"\n" +
+			" public static class SomeEnumConverter extends EnumConverter<Thread.State> {\n" +
+			" }\n" +
+			"\n" +
+			" public static void main(String[] args) throws Exception {\n" +
+			"   Method m = SomeEnumConverter.class.getMethod(\"convert\", String.class);\n" +
+			"   System.out.println(m.getGenericReturnType());\n" +
+			" }\n" +
+			"\n" +
+			"}\n"
+
+		},
+		"T");
+}
+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=298362 (variation)
+// Note that this test prints "T" with javac5 and "class java.lang.Object with javac 6,7
+public void test207() {
+	this.runConformTest(
+		new String[] {
+			"Tester.java",
+			"import java.lang.reflect.Method;\n" +
+			"\n" +
+			"public class Tester {\n" +
+			"\n" +
+			" public static interface Converter<T> {\n" +
+			"   T convert(String input);\n" +
+			" }\n" +
+			"\n" +
+			" public static abstract class EnumConverter<T extends Enum<T>, K> implements Converter<T> {\n" +
+			"   public final T convert(K input) {\n" +
+			"     return null;\n" +
+			"   }\n" +
+			" }\n" +
+			"\n" +
+			" public static class SomeEnumConverter extends EnumConverter<Thread.State, String> {\n" +
+			" }\n" +
+			"\n" +
+			" public static void main(String[] args) throws Exception {\n" +
+			"   Method m = SomeEnumConverter.class.getMethod(\"convert\", String.class);\n" +
+			"   System.out.println(m.getGenericReturnType());\n" +
+			" }\n" +
+			"\n" +
+			"}\n"
+
+		},
+		"class java.lang.Object");
+}
 }