### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/ast/Assignment.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/Assignment.java,v
retrieving revision 1.88
diff -u -r1.88 Assignment.java
--- compiler/org/eclipse/jdt/internal/compiler/ast/Assignment.java	7 Mar 2009 00:58:57 -0000	1.88
+++ compiler/org/eclipse/jdt/internal/compiler/ast/Assignment.java	13 Jul 2010 15:26:39 -0000
@@ -160,7 +160,7 @@
 	}
 	// check for assignment with no effect
 	Binding left = getDirectBinding(this.lhs);
-	if (left != null && left == getDirectBinding(this.expression)) {
+	if (left != null && !left.isVolatile() && left == getDirectBinding(this.expression)) {
 		scope.problemReporter().assignmentHasNoEffect(this, left.shortReadableName());
 	}
 
Index: compiler/org/eclipse/jdt/internal/compiler/lookup/Binding.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/lookup/Binding.java,v
retrieving revision 1.35
diff -u -r1.35 Binding.java
--- compiler/org/eclipse/jdt/internal/compiler/lookup/Binding.java	24 Sep 2008 16:05:23 -0000	1.35
+++ compiler/org/eclipse/jdt/internal/compiler/lookup/Binding.java	13 Jul 2010 15:26:39 -0000
@@ -91,6 +91,9 @@
 	public final boolean isValidBinding() {
 		return problemId() == ProblemReasons.NoError;
 	}
+	public boolean isVolatile() {
+		return false;
+	}
 	/* API
 	* Answer the problem id associated with the receiver.
 	* NoError if the receiver is a valid binding.
#P org.eclipse.jdt.core.tests.compiler
Index: src/org/eclipse/jdt/core/tests/compiler/regression/ProgrammingProblemsTest.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/ProgrammingProblemsTest.java,v
retrieving revision 1.22
diff -u -r1.22 ProgrammingProblemsTest.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/ProgrammingProblemsTest.java	18 Jun 2010 15:51:58 -0000	1.22
+++ src/org/eclipse/jdt/core/tests/compiler/regression/ProgrammingProblemsTest.java	13 Jul 2010 15:26:44 -0000
@@ -1638,4 +1638,49 @@
 		"a cannot be resolved to a variable\n" + 
 		"----------\n");
 }
+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=310264
+public void test0044() {
+	this.runNegativeTest(
+		new String[] {
+			"X.java",
+			"class X {\n" + 
+			"   volatile int x;\n" +
+			"   int nvx;\n" +
+			"	void foo(int i) {\n" +
+			"		x = x;\n" + 
+			"       nvx = nvx;\n" +
+			"	}\n" + 
+			"}"
+		},
+		"----------\n" + 
+		"1. WARNING in X.java (at line 6)\n" + 
+		"	nvx = nvx;\n" + 
+		"	^^^^^^^^^\n" + 
+		"The assignment to variable nvx has no effect\n" + 
+		"----------\n");
+}
+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=310264
+public void test0045() {
+	this.runNegativeTest(
+		new String[] {
+			"X.java",
+			"class X {\n" + 
+			"   volatile int x = this.x;\n" +
+			"   int nvx = this.nvx;\n" +
+			"	void foo(int i) {\n" +
+			"	}\n" + 
+			"}"
+		},
+		"----------\n" + 
+		"1. WARNING in X.java (at line 2)\n" + 
+		"	volatile int x = this.x;\n" + 
+		"	             ^^^^^^^^^^\n" + 
+		"The assignment to variable x has no effect\n" + 
+		"----------\n" + 
+		"2. WARNING in X.java (at line 3)\n" + 
+		"	int nvx = this.nvx;\n" + 
+		"	    ^^^^^^^^^^^^^^\n" + 
+		"The assignment to variable nvx has no effect\n" + 
+		"----------\n");
+}
 }
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