### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core.tests.compiler
Index: src/org/eclipse/jdt/core/tests/compiler/regression/NullReferenceTest.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/NullReferenceTest.java,v
retrieving revision 1.109
diff -u -r1.109 NullReferenceTest.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/NullReferenceTest.java	19 Jan 2011 05:29:57 -0000	1.109
+++ src/org/eclipse/jdt/core/tests/compiler/regression/NullReferenceTest.java	5 Feb 2011 21:59:26 -0000
@@ -13832,4 +13832,21 @@
 			"}"},
 		"");
 }
+// Bug 336428 - [compiler][null] bogus warning "redundant null check" in condition of do {} while() loop
+public void testBug336428() {
+	this.runConformTest(
+		new String[] {
+	"DoWhileBug.java",
+			"public class DoWhileBug {\n" + 
+			"	void test(boolean b1, Object o1) {\n" + 
+			"		Object o2 = new Object();\n" + 
+			"		do {\n" +
+			"           if (b1)\n" + 
+			"				o1 = null;\n" + 
+			"		} while ((o2 = o1) != null);\n" + 
+			"	}\n" + 
+			"}"	
+		},
+		"");
+}
 }
\ No newline at end of file