### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/ClassFile.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ClassFile.java,v
retrieving revision 1.176
diff -u -r1.176 ClassFile.java
--- compiler/org/eclipse/jdt/internal/compiler/ClassFile.java	7 Jul 2008 17:08:07 -0000	1.176
+++ compiler/org/eclipse/jdt/internal/compiler/ClassFile.java	8 Jul 2008 14:01:48 -0000
@@ -8348,10 +8348,17 @@
 									poolContents, 1,
 									constantPoolOffsets[utf8index]));
 					int classNameLength = className.length;
-					System.arraycopy(className, 0, (constantPoolName = new char[classNameLength + 3]), 2, classNameLength);
-					constantPoolName[0] = '[';
-					constantPoolName[1] = 'L';
-					constantPoolName[classNameLength + 2] = ';';
+					if (className[0] != '[') {
+						// this is a type name (class or interface). So we add appropriate '[', 'L' and ';'.
+						System.arraycopy(className, 0, (constantPoolName = new char[classNameLength + 3]), 2, classNameLength);
+						constantPoolName[0] = '[';
+						constantPoolName[1] = 'L';
+						constantPoolName[classNameLength + 2] = ';';
+					} else {
+						// if class name is already an array, we just need to add one dimension
+						System.arraycopy(className, 0, (constantPoolName = new char[classNameLength + 1]), 1, classNameLength);
+						constantPoolName[0] = '[';
+					}
 					frame.stackItems[frame.numberOfStackItems - 1] = new VerificationTypeInfo(0, constantPoolName);
 					pc += 3;
 					break;
#P org.eclipse.jdt.core.tests.compiler
Index: src/org/eclipse/jdt/core/tests/compiler/regression/StackMapAttributeTest.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/StackMapAttributeTest.java,v
retrieving revision 1.36
diff -u -r1.36 StackMapAttributeTest.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/StackMapAttributeTest.java	8 Jul 2008 02:01:45 -0000	1.36
+++ src/org/eclipse/jdt/core/tests/compiler/regression/StackMapAttributeTest.java	8 Jul 2008 14:01:49 -0000
@@ -6096,4 +6096,25 @@
 			},
 		"SUCCESS");
 	}
+
+	// https://bugs.eclipse.org/bugs/show_bug.cgi?id=237931
+	public void test039() {
+		this.runConformTest(
+			new String[] {
+				"X.java",
+				"public class X {\n" + 
+				"	public String[][] foo(String s) {\n" + 
+				"		return\n" + 
+				"			new String[][] { {\" \", s != null ? s : \"\" },\n" + 
+				"				{\" \", s != null ? s : \"\" },\n" + 
+				"				{\" \", s != null ? s : \"\" },\n" + 
+				"				{\" \", s != null ? s : \"\" } };\n" + 
+				"	}\n" + 
+				"	public static void main(String[] args) {\n" + 
+				"		System.out.println(\"SUCCESS\");\n" + 
+				"	}\n" + 
+				"}",
+			},
+		"SUCCESS");
+	}
 }