Index: compiler/org/eclipse/jdt/core/compiler/IProblem.java
===================================================================
RCS file: /home/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/core/compiler/IProblem.java,v
retrieving revision 1.118
diff -u -r1.118 IProblem.java
--- compiler/org/eclipse/jdt/core/compiler/IProblem.java	29 Nov 2004 17:57:27 -0000	1.118
+++ compiler/org/eclipse/jdt/core/compiler/IProblem.java	29 Nov 2004 22:28:34 -0000
@@ -1019,6 +1019,8 @@
 	int IllegalQualifiedEnumConstantLabel = FieldRelated + 755;
 	/** @since 3.1 */
 	int CannotExtendEnum = TypeRelated + 756;
+	/** @since 3.1 */
+	int ExplicitConstructorCallCannotBeUsedInEnum = MethodRelated + 757;
 
 	/**
 	 * Var args
Index: compiler/org/eclipse/jdt/internal/compiler/ast/ExplicitConstructorCall.java
===================================================================
RCS file: /home/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/ExplicitConstructorCall.java,v
retrieving revision 1.38
diff -u -r1.38 ExplicitConstructorCall.java
--- compiler/org/eclipse/jdt/internal/compiler/ast/ExplicitConstructorCall.java	2 Nov 2004 14:14:03 -0000	1.38
+++ compiler/org/eclipse/jdt/internal/compiler/ast/ExplicitConstructorCall.java	29 Nov 2004 22:28:34 -0000
@@ -264,6 +264,10 @@
 				return;
 			}
 
+			if (!isImplicitSuper() && receiverType.erasure().id == T_JavaLangEnum) {
+				scope.problemReporter().explicitConstructorCallCannotBeUsedInEnum(this);
+				return;
+			}
 			// qualification should be from the type of the enclosingType
 			if (qualification != null) {
 				if (accessMode != Super) {
Index: compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java
===================================================================
RCS file: /home/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java,v
retrieving revision 1.200
diff -u -r1.200 ProblemReporter.java
--- compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	29 Nov 2004 17:57:27 -0000	1.200
+++ compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	29 Nov 2004 22:28:34 -0000
@@ -1083,6 +1083,14 @@
 		reference.sourceStart,
 		reference.sourceEnd);
 }
+public void explicitConstructorCallCannotBeUsedInEnum(ExplicitConstructorCall constructorCall) {
+	this.handle(
+		IProblem.ExplicitConstructorCallCannotBeUsedInEnum,
+		NoArgument,
+		NoArgument,
+		constructorCall.sourceStart,
+		constructorCall.sourceEnd);
+}
 public void expressionShouldBeAVariable(Expression expression) {
 	this.handle(
 		IProblem.ExpressionShouldBeAVariable,
Index: compiler/org/eclipse/jdt/internal/compiler/problem/messages.properties
===================================================================
RCS file: /home/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/problem/messages.properties,v
retrieving revision 1.143
diff -u -r1.143 messages.properties
--- compiler/org/eclipse/jdt/internal/compiler/problem/messages.properties	29 Nov 2004 17:57:29 -0000	1.143
+++ compiler/org/eclipse/jdt/internal/compiler/problem/messages.properties	29 Nov 2004 22:28:34 -0000
@@ -494,6 +494,7 @@
 754 = The enum {1} already defines the method {0}({2}) implicitly
 755 = Cannot qualify the name of the enum constant {0} in a case label
 756 = The type {1} may not subclass {0} explicitly
+757 = Explicit constructor call is not allowed in an enum constructor
 
 
 ### VARARGS