### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/ast/SingleNameReference.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/SingleNameReference.java,v
retrieving revision 1.95
diff -u -r1.95 SingleNameReference.java
--- compiler/org/eclipse/jdt/internal/compiler/ast/SingleNameReference.java	6 Mar 2007 02:38:48 -0000	1.95
+++ compiler/org/eclipse/jdt/internal/compiler/ast/SingleNameReference.java	13 Mar 2007 23:05:23 -0000
@@ -360,8 +360,9 @@
 						} else {
 							codeStream.invokestatic(syntheticAccessors[READ]);
 						}
+						// required cast must occur even if no value is required
+						if (this.genericCast != null) codeStream.checkcast(this.genericCast);
 						if (valueRequired) {
-							if (this.genericCast != null) codeStream.checkcast(this.genericCast);
 							codeStream.generateImplicitConversion(implicitConversion);
 						} else {
 							if ((implicitConversion & TypeIds.UNBOXING) != 0) {
@@ -378,7 +379,9 @@
 							}
 						}							
 					} else {
-						if (!valueRequired && ((implicitConversion & TypeIds.UNBOXING) == 0)) {
+						if (!valueRequired 
+								&& ((implicitConversion & TypeIds.UNBOXING) == 0) 
+								&& this.genericCast == null) { // required cast must occur even if no value is required
 							// if no valueRequired, optimize out entire gen
 							break;
 						}
Index: compiler/org/eclipse/jdt/internal/compiler/ast/FieldReference.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/FieldReference.java,v
retrieving revision 1.108
diff -u -r1.108 FieldReference.java
--- compiler/org/eclipse/jdt/internal/compiler/ast/FieldReference.java	21 Feb 2007 18:08:14 -0000	1.108
+++ compiler/org/eclipse/jdt/internal/compiler/ast/FieldReference.java	13 Mar 2007 23:05:22 -0000
@@ -189,7 +189,8 @@
 		return;
 	}
 	if (valueRequired || (!isThisReceiver && currentScope.compilerOptions().complianceLevel >= ClassFileConstants.JDK1_4)
-			|| ((implicitConversion & TypeIds.UNBOXING) != 0)) {
+			|| ((implicitConversion & TypeIds.UNBOXING) != 0)
+			|| (this.genericCast != null)) {
 		receiver.generateCode(currentScope, codeStream, !isStatic);
 		pc = codeStream.position;
 		if (this.codegenBinding.declaringClass == null) { // array length
@@ -210,8 +211,9 @@
 			} else {
 				codeStream.invokestatic(syntheticAccessors[READ]);
 			}
+			// required cast must occur even if no value is required
+			if (this.genericCast != null) codeStream.checkcast(this.genericCast);
 			if (valueRequired) {
-				if (this.genericCast != null) codeStream.checkcast(this.genericCast);
 				codeStream.generateImplicitConversion(implicitConversion);
 			} else {
 				if ((implicitConversion & TypeIds.UNBOXING) != 0) {
Index: compiler/org/eclipse/jdt/internal/compiler/ast/MessageSend.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/MessageSend.java,v
retrieving revision 1.120
diff -u -r1.120 MessageSend.java
--- compiler/org/eclipse/jdt/internal/compiler/ast/MessageSend.java	6 Mar 2007 02:38:48 -0000	1.120
+++ compiler/org/eclipse/jdt/internal/compiler/ast/MessageSend.java	13 Mar 2007 23:05:22 -0000
@@ -144,11 +144,11 @@
 	} else {
 		codeStream.invokestatic(syntheticAccessor);
 	}
-	// operation on the returned value
+	// required cast must occur even if no value is required
+	if (this.valueCast != null) codeStream.checkcast(this.valueCast);
+
 	if (valueRequired){
 		// implicit conversion if necessary
-		if (this.valueCast != null) 
-			codeStream.checkcast(this.valueCast);
 		codeStream.generateImplicitConversion(implicitConversion);
 	} else {
 		// pop return value if any
#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 1.601
diff -u -r1.601 GenericTypeTest.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/GenericTypeTest.java	6 Mar 2007 04:42:12 -0000	1.601
+++ src/org/eclipse/jdt/core/tests/compiler/regression/GenericTypeTest.java	13 Mar 2007 23:05:44 -0000
@@ -36736,4 +36736,140 @@
 		},
 		"");		
 }
+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=177194
+public void testONLY_1109() {
+	Map settings = getCompilerOptions();
+	settings.put(CompilerOptions.OPTION_PreserveUnusedLocal, CompilerOptions.OPTIMIZE_OUT);
+	this.runConformTest(
+		new String[] {
+			"X.java",
+			"class A<T> {\n" + 
+			"        public T foo(Object o) {\n" + 
+			"                return (T) o; // should get unchecked warning\n" + 
+			"        }\n" + 
+			"}\n" + 
+			"\n" + 
+			"public class X {\n" + 
+			"        public static void main(String[] args) {\n" + 
+			"                A<X> a = new A<X>();\n" + 
+			"                try {\n" + 
+			"	                X s = a.foo(new Object());\n" + 
+			"                } catch(ClassCastException e) {\n" + 
+			"                	System.out.println(\"SUCCESS\");\n" + 
+			"                	return;\n" + 
+			"                }\n" + 
+			"            	System.out.println(\"FAILED\");\n" + 
+			"        }\n" + 
+			"}\n", // =================
+		},
+		"SUCCESS",
+		null,
+		true,
+		null,
+		settings,
+		null);		
+}
+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=177194 - variation
+public void testONLY_1110() {
+	Map settings = getCompilerOptions();
+	settings.put(CompilerOptions.OPTION_PreserveUnusedLocal, CompilerOptions.OPTIMIZE_OUT);
+	this.runConformTest(
+		new String[] {
+			"X.java",
+			"class A<T> {\n" + 
+			"        public T foo;\n" +
+			"}\n" + 
+			"\n" + 
+			"public class X {\n" + 
+			"        public static void main(String[] args) {\n" + 
+			"                A<X> a = new A<X>();\n" + 
+			"				 A ua = a;\n" +
+			"				 ua.foo = new Object();\n" +
+			"                try {\n" + 
+			"	                X s = a.foo;\n" + 
+			"                } catch(ClassCastException e) {\n" + 
+			"                	System.out.println(\"SUCCESS\");\n" + 
+			"                	return;\n" + 
+			"                }\n" + 
+			"            	System.out.println(\"FAILED\");\n" + 
+			"        }\n" + 
+			"}\n", // =================
+		},
+		"SUCCESS",
+		null,
+		true,
+		null,
+		settings,
+		null);		
+}
+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=177194 - variation
+public void testONLY_1111() {
+	Map settings = getCompilerOptions();
+	settings.put(CompilerOptions.OPTION_PreserveUnusedLocal, CompilerOptions.OPTIMIZE_OUT);
+	this.runConformTest(
+		new String[] {
+			"X.java",
+			"class A<T> {\n" + 
+			"        public T foo;\n" +
+			"}\n" + 
+			"\n" + 
+			"public class X extends A<X>{\n" + 
+			"        public static void main(String[] args) {\n" + 
+			"			new X().foo();\n" +
+			"		 }\n" +
+			" 		 public void foo() {\n" +
+			"				 A ua = this;\n" +
+			"				 ua.foo = new Object();\n" +
+			"                try {\n" + 
+			"	                X s = foo;\n" + 
+			"                } catch(ClassCastException e) {\n" + 
+			"                	System.out.println(\"SUCCESS\");\n" + 
+			"                	return;\n" + 
+			"                }\n" + 
+			"            	System.out.println(\"FAILED\");\n" + 
+			"        }\n" + 
+			"}\n", // =================
+		},
+		"SUCCESS",
+		null,
+		true,
+		null,
+		settings,
+		null);		
+}
+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=177194 - variation
+public void testONLY_1112() {
+	Map settings = getCompilerOptions();
+	settings.put(CompilerOptions.OPTION_PreserveUnusedLocal, CompilerOptions.OPTIMIZE_OUT);
+	this.runConformTest(
+		new String[] {
+			"X.java",
+			"class A<T> {\n" + 
+			"        public T foo;\n" +
+			"}\n" + 
+			"\n" + 
+			"public class X extends A<X>{\n" + 
+			"        public static void main(String[] args) {\n" + 
+			"			new X().foo();\n" +
+			"		 }\n" +
+			" 		 public void foo() {\n" +
+			"				 A ua = this;\n" +
+			"				 ua.foo = new Object();\n" +
+			"                try {\n" + 
+			"	                X s = this.foo;\n" + 
+			"                } catch(ClassCastException e) {\n" + 
+			"                	System.out.println(\"SUCCESS\");\n" + 
+			"                	return;\n" + 
+			"                }\n" + 
+			"            	System.out.println(\"FAILED\");\n" + 
+			"        }\n" + 
+			"}\n", // =================
+		},
+		"SUCCESS",
+		null,
+		true,
+		null,
+		settings,
+		null);		
+}
 }