### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/lookup/ParameterizedTypeBinding.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/lookup/ParameterizedTypeBinding.java,v
retrieving revision 1.115
diff -u -r1.115 ParameterizedTypeBinding.java
--- compiler/org/eclipse/jdt/internal/compiler/lookup/ParameterizedTypeBinding.java	20 Oct 2010 05:46:47 -0000	1.115
+++ compiler/org/eclipse/jdt/internal/compiler/lookup/ParameterizedTypeBinding.java	28 Oct 2010 11:37:32 -0000
@@ -731,7 +731,17 @@
 	    	case Binding.RAW_TYPE :
 	            return erasure() == otherType.erasure();
 	    }
-        return false;
+	    /* With the hybrid 1.4/1.5+ projects modes, while establishing type equivalence, we need to
+	       be prepared for a type such as Map appearing in one of three forms: As (a) a ParameterizedTypeBinding 
+	       e.g Map<String, String>, (b) as RawTypeBinding Map#RAW and finally (c) as a BinaryTypeBinding 
+	       When the usage of a type lacks type parameters, whether we land up with the raw form or not depends
+	       on whether the underlying type was "seen to be" a generic type in the particular build environment or
+	       not. See https://bugs.eclipse.org/bugs/show_bug.cgi?id=328827 
+	     */
+	    if (this.environment.globalOptions.sourceLevel < ClassFileConstants.JDK1_5 && erasure() == otherType) {
+	    	return true;
+	    }
+	    return false;
 	}
 
 	public boolean isHierarchyConnected() {
#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 1.204
diff -u -r1.204 MethodVerifyTest.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/MethodVerifyTest.java	22 Oct 2010 04:25:43 -0000	1.204
+++ src/org/eclipse/jdt/core/tests/compiler/regression/MethodVerifyTest.java	28 Oct 2010 11:38:11 -0000
@@ -11133,4 +11133,53 @@
 			""
 	);
 }
+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=328827 
+public void test328827() {
+	Map compilerOptions15 = getCompilerOptions();
+	compilerOptions15.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_5);
+	compilerOptions15.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_5);
+	compilerOptions15.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_5);
+	this.runConformTest(
+		new String[] {
+			"Map.java",
+			"public interface Map<K,V> {}\n",
+			
+			"EventProperties.java",
+			"public class EventProperties implements Map<String, Object> {}\n",
+			
+			"Event.java",
+			"public class Event {\n" +
+			"    public Event(Map<String, ?> properties) {}\n" +
+			"}"
+		},
+		"",
+		null,
+		true,
+		null,
+		compilerOptions15,
+		null);
+	
+	Map compilerOptions14 = getCompilerOptions();
+	compilerOptions14.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_2);
+	compilerOptions14.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_4);
+	compilerOptions14.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_3);
+	this.runConformTest(
+		new String[] {
+				"Map.java",
+				"public interface Map {}\n",
+				
+				"X.java",
+				"public class X {\n" +
+				"    public void start() {\n" +
+				"        Event event = new Event(new EventProperties());\n" + 
+				"	}\n" +
+				"}"
+		},
+		"",
+		null,
+		false,
+		null,
+		compilerOptions14,
+		null);
+}
 }