GP-5101 - MDMang - Properly process anon NS in vxtables owner and parentage; start work on OutputOptions, as needed for anon NS

Ghidra/Features/MicrosoftDemangler/src/main/java/ghidra/app/util/demangler/microsoft/MicrosoftDemangler.java

@@ -66,7 +66,13 @@ public class MicrosoftDemangler implements Demangler {
 		demangler.setIsFunction(mContext.shouldInterpretAsFunction());
 		try {
 			item = demangler.demangle();
-			object = MicrosoftDemanglerUtil.convertToDemangledObject(item, mangled);
+			if (item == null) {
+				return null;
+			}
+			String originalDemangled = item.toString();
+			demangler.getOutputOptions().setUseEncodedAnonymousNamespace(true);
+			object =
+				MicrosoftDemanglerUtil.convertToDemangledObject(item, mangled, originalDemangled);
 			if (object != null) {
 				object.setMangledContext(context);
 			}
@@ -103,7 +109,13 @@ public class MicrosoftDemangler implements Demangler {
 		demangler.setIsFunction(mContext.shouldInterpretAsFunction());
 		try {
 			mdType = demangler.demangleType();
-			dataType = MicrosoftDemanglerUtil.convertToDemangledDataType(mdType, mangled);
+			if (mdType == null) {
+				return null;
+			}
+			String originalDemangled = item.toString();
+			demangler.getOutputOptions().setUseEncodedAnonymousNamespace(true);
+			dataType = MicrosoftDemanglerUtil.convertToDemangledDataType(mdType, mangled,
+				originalDemangled);
 			if (dataType != null) {
 				dataType.setMangledContext(context);
 			}

Ghidra/Features/MicrosoftDemangler/src/main/java/ghidra/app/util/demangler/microsoft/MicrosoftDemanglerUtil.java

@@ -50,22 +50,27 @@ public class MicrosoftDemanglerUtil {
 	 * is not appropriate for {@link MDDataType} and some other types of {@link MDParsableItem}
 	 * @param item the item to convert
 	 * @param mangled the original mangled string
+	 * @param originalDemangled the original demangled string
 	 * @return the {@link DemangledObject} result
 	 * @throws DemangledException up issue converting to a {@link DemangledObject}
 	 */
-	static DemangledObject convertToDemangledObject(MDParsableItem item, String mangled)
+	static DemangledObject convertToDemangledObject(MDParsableItem item, String mangled,
+			String originalDemangled)
 			throws DemangledException {
-		return processItem(item, mangled, item.toString());
+		return processItem(item, mangled, originalDemangled);
 	}
 
 	/**
-	 * Method to convert an {@link MDDataType} into a {@link DemangledDataType}
+	 * Method to convert an {@link MDDataType} into a {@link DemangledDataType}.  Demangler
+	 * needs to have already run to process the type before calling this method
 	 * @param type the type to convert
-	 * @param mangled the original mangled string
+	 * @param mangled the mangled string
+	 * @param originalDemangled the original demangled string
 	 * @return the result
 	 */
-	static DemangledDataType convertToDemangledDataType(MDDataType type, String mangled) {
-		return processDataType(null, type, mangled, type.toString());
+	static DemangledDataType convertToDemangledDataType(MDDataType type, String mangled,
+			String originalDemangled) {
+		return processDataType(null, type, mangled, originalDemangled);
 	}
 
 	//==============================================================================================
@@ -121,14 +126,8 @@ public class MicrosoftDemanglerUtil {
 			}
 		}
 		else if (qual.isAnon()) {
-			// Instead of using the standard qual.toString() method, which returns
-			// "`anonymous namespace'" for anonymous qualifiers, we use qual.getAnonymousName()
-			// which will have the underlying anonymous name of the form "A0xfedcba98" to create
-			// a standardized anonymous name that is distinguishable from other anonymous names.
-			// The standardized name comes from createStandardAnonymousNamespaceNode().  This
-			// is especially important when there are sibling anonymous names.
-			String anon = MDMangUtils.createStandardAnonymousNamespaceNode(qual.getAnonymousName());
-			demangled = new DemangledNamespaceNode(mangled, qual.toString(), anon);
+			String orig = qual.getAnonymousName();
+			demangled = new DemangledNamespaceNode(mangled, orig, qual.toString());
 		}
 		else if (qual.isInterface()) {
 			// TODO: need to do better; setting namespace for now

Ghidra/Features/MicrosoftDemangler/src/test/java/ghidra/app/util/demangler/microsoft/MicrosoftDemanglerExtraTest.java

@@ -178,6 +178,29 @@ public class MicrosoftDemanglerExtraTest extends AbstractGenericTest {
 
 	//==============================================================================================
 
+	@Test
+	public void testVxTableAnonymousNsInOwnerAndBackref() throws Exception {
+		String mangled = "??_7a@?A0xfedcba98@b@@6B012@01@@";
+		String mTruth =
+			"const b::`anonymous namespace'::a::`vftable'{for `b::A0xfedcba98::a's `A0xfedcba98::a'}";
+		String gTruth =
+			"const b::_anon_FEDCBA98::a::`vftable'{for `b::_anon_FEDCBA98::a's `_anon_FEDCBA98::a'}";
+
+		MicrosoftDemangler demangler = new MicrosoftDemangler();
+
+		MicrosoftMangledContext context =
+			demangler.createMangledContext(mangled, null, program32, address32);
+		DemangledObject obj = demangler.demangle(context);
+
+		String originalDemangled = obj.getOriginalDemangled();
+		assertEquals(mTruth, originalDemangled);
+
+		String demangled = demangler.getMdItem().toString();
+		assertEquals(gTruth, demangled);
+	}
+
+	//==============================================================================================
+
 	@Test
 	//This test checks that we can provide a mangled string for a function namespace.
 	// The return String from getOriginalMangled() is not null only for this special

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/MDMang.java

@@ -40,6 +40,8 @@ import mdemangler.template.MDTemplateArgumentsList;
 public class MDMang {
 	public static final char DONE = MDCharacterIterator.DONE;
 
+	private MDOutputOptions outputOptions = new MDOutputOptions();
+
 	protected int architectureSize = 32;
 	protected boolean isFunction = false;
 
@@ -110,7 +112,13 @@ public class MDMang {
 	}
 
 	//==============================================================================================
-	// Control
+	// Output Options
+	public MDOutputOptions getOutputOptions() {
+		return outputOptions;
+	}
+
+	//==============================================================================================
+	// Demangling options
 
 	/**
 	 * Controls whether an exception is thrown if there are remaining characters after demangling.

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/MDOutputOptions.java

@@ -0,0 +1,51 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package mdemangler;
+
+/**
+ * Options for controlling demangler output.  Quick stub for now.  Full implementation was planned
+ * for another ticket
+ */
+public class MDOutputOptions {
+
+	private boolean useEncodedAnonymousNamespaceNumber;
+
+	/**
+	 * Constructor
+	 */
+	public MDOutputOptions() {
+	}
+
+	/**
+	 * Sets the option for whether to use or not use the numerical encoding to craft a
+	 * unique anonymous namespace.  The default {@code false} is to produce the normal anonymous
+	 * namespace string produced by Microsoft's {@code undname}
+	 * @param useEncodedNumber {@code true} to produce a namespace that uses the encoded number
+	 */
+	public void setUseEncodedAnonymousNamespace(boolean useEncodedNumber) {
+		this.useEncodedAnonymousNamespaceNumber = useEncodedNumber;
+	}
+
+	/**
+	 * Returns {@code true} if the demangler will use the encoded number in creating the
+	 * anonymous namespace component
+	 * @return {@code true} if the flag is set
+	 */
+	public boolean useEncodedAnonymousNamespace() {
+		return useEncodedAnonymousNamespaceNumber;
+	}
+
+}

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/naming/MDBasicName.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -30,13 +30,13 @@ public class MDBasicName extends MDParsableItem {
 	MDReusableName reusableName;
 	MDObjectCPP embeddedObject;
 	MDQualification embeddedObjectQualification;
-	String nameModifier;
+	MDNameModifier nameModifier;
 
 	public MDBasicName(MDMang dmang) {
 		super(dmang);
 	}
 
-	public void setNameModifier(String nameModifier) {
+	public void setNameModifier(MDNameModifier nameModifier) {
 		this.nameModifier = nameModifier;
 	}
 
@@ -165,7 +165,7 @@ public class MDBasicName extends MDParsableItem {
 			templateNameAndArguments.insert(builder);
 		}
 		if (nameModifier != null) {
-			builder.append(nameModifier);
+			builder.append(nameModifier.getModifier());
 		}
 	}
 

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/naming/MDFragmentName.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -34,7 +34,12 @@ public class MDFragmentName extends MDParsableItem {
 
 	@Override
 	public void insert(StringBuilder builder) {
-		dmang.insertString(builder, name);
+		if (dmang.getOutputOptions().useEncodedAnonymousNamespace()) {
+			dmang.insertString(builder, MDMangUtils.createStandardAnonymousNamespaceNode(name));
+		}
+		else {
+			dmang.insertString(builder, name);
+		}
 	}
 
 	public void setName(String name) {

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/naming/MDNameModifier.java

@@ -0,0 +1,29 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package mdemangler.naming;
+
+/**
+ * This interface is for items that provide a name modifier
+ */
+public interface MDNameModifier {
+
+	/**
+	 * Returns the modifier string for the name
+	 * @return the modifier
+	 */
+	public String getModifier();
+
+}

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/naming/MDQualifiedBasicName.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -93,7 +93,7 @@ public class MDQualifiedBasicName extends MDParsableItem {
 		return qualification;
 	}
 
-	public void setNameModifier(String nameModifier) {
+	public void setNameModifier(MDNameModifier nameModifier) {
 		basicName.setNameModifier(nameModifier);
 	}
 

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/naming/MDQualifier.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -91,7 +91,13 @@ public class MDQualifier extends MDParsableItem {
 			name.insert(builder);
 		}
 		else if (nameAnonymous != null) {
-			dmang.insertString(builder, ANONYMOUS_NAMESPACE);
+			if (dmang.getOutputOptions().useEncodedAnonymousNamespace()) {
+				dmang.insertString(builder,
+					MDMangUtils.createStandardAnonymousNamespaceNode(nameAnonymous.getName()));
+			}
+			else {
+				dmang.insertString(builder, ANONYMOUS_NAMESPACE);
+			}
 		}
 		else if (nameInterface != null) {
 			nameInterface.insert(builder);

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/object/MDObjectCPP.java

@@ -148,9 +148,7 @@ public class MDObjectCPP extends MDObject {
 					typeInfo.setTypeCast();
 				}
 				typeInfo.parse();
-				if (!typeInfo.getNameModifier().isEmpty()) {
-					qualifiedName.setNameModifier(typeInfo.getNameModifier());
-				}
+				qualifiedName.setNameModifier(typeInfo);
 				if (qualifiedName.isTypeCast()) {
 					applyFunctionReturnTypeToTypeCastOperatorName();
 				}

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/typeinfo/MDGuard.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -23,11 +23,19 @@ import mdemangler.*;
  */
 public class MDGuard extends MDTypeInfo {
 
+	private MDEncodedNumber guardNumber;
+
 	public MDGuard(MDMang dmang) {
 		super(dmang);
+		guardNumber = new MDEncodedNumber(dmang);
 		mdtype = new MDType(dmang);
 	}
 
+	@Override
+	public String getModifier() {
+		return "{" + guardNumber + "}'";
+	}
+
 	@Override
 	public void insert(StringBuilder builder) {
 		super.insert(builder);
@@ -35,9 +43,7 @@ public class MDGuard extends MDTypeInfo {
 
 	@Override
 	protected void parseInternal() throws MDException {
-		MDEncodedNumber guardNumber = new MDEncodedNumber(dmang);
 		guardNumber.parse();
-		nameModifier = "{" + guardNumber + "}'";
 		super.parseInternal();
 	}
 }

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/typeinfo/MDTypeInfo.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -16,11 +16,12 @@
 package mdemangler.typeinfo;
 
 import mdemangler.*;
+import mdemangler.naming.MDNameModifier;
 
 /**
  *
  */
-public class MDTypeInfo extends MDParsableItem {
+public class MDTypeInfo extends MDParsableItem implements MDNameModifier {
 	private static final String PRIVATE = "private: ";
 	private static final String PROTECTED = "protected: ";
 	private static final String PUBLIC = "public: ";
@@ -61,14 +62,13 @@ public class MDTypeInfo extends MDParsableItem {
 	protected MDType mdtype;
 	protected boolean isTypeCast;
 
-	protected String nameModifier = "";
-
 	public MDTypeInfo(MDMang dmang) {
 		super(dmang, 1);
 	}
 
-	public String getNameModifier() {
-		return nameModifier;
+	@Override
+	public String getModifier() {
+		return "";
 	}
 
 	public void setPrivate() {

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/typeinfo/MDVCall.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -57,6 +57,12 @@ public class MDVCall extends MDMemberFunctionInfo {
 		callIndex = new MDEncodedNumber(dmang);
 	}
 
+	@Override
+	public String getModifier() {
+		// TODO: Future specialization on 16-bit or 32plus
+		return getNameModifier_32PlusBitModel();
+	}
+
 	@Override
 	public void insert(StringBuilder builder) {
 		// TODO: Future specialization on 16-bit or 32plus
@@ -197,8 +203,6 @@ public class MDVCall extends MDMemberFunctionInfo {
 		}
 		// TODO evaluate whether parseInternal() or parse.
 		super.parseInternal();
-		// TODO: Future specialization on 16-bit or 32plus
-		nameModifier = getNameModifier_32PlusBitModel();
 	}
 }
 

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/typeinfo/MDVFAdjustor.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -24,21 +24,27 @@ import mdemangler.functiontype.MDFunctionType;
  */
 public class MDVFAdjustor extends MDMemberFunctionInfo {
 
+	private MDEncodedNumber adjustment;
+
 	// Comment from wiki page: This kind of thunk (G,H,O,P,W,X) function is always virtual, and
 	// used to represent the logical "this" adjustor property, which means an offset to the
 	// true "this" value in some multiple inheritance situations.
 	public MDVFAdjustor(MDMang dmang) {
 		super(dmang);
 		mdtype = new MDFunctionType(dmang);
+		adjustment = new MDEncodedNumber(dmang);
 		setVirtual();
 		setThunk();
 	}
 
+	@Override
+	public String getModifier() {
+		return "`adjustor{" + adjustment + "}' ";
+	}
+
 	@Override
 	protected void parseInternal() throws MDException {
-		MDEncodedNumber adjustment = new MDEncodedNumber(dmang);
 		adjustment.parse();
-		nameModifier = "`adjustor{" + adjustment + "}' ";
 		super.parseInternal(); // TODO evaluate whether parseInternal() or parse.
 	}
 }

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/typeinfo/MDVtordisp.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -24,22 +24,31 @@ import mdemangler.functiontype.MDFunctionType;
  */
 public class MDVtordisp extends MDMemberFunctionInfo {
 
+	// 20200507: Believe this to be <offset-to-vtordisp>
+	private MDEncodedNumber vtorDisplacement;
+	// 20200507: Believe this to be <static-offset>
+	private MDEncodedNumber adjustment;
+
 	public MDVtordisp(MDMang dmang) {
 		super(dmang);
 		mdtype = new MDFunctionType(dmang);
+		vtorDisplacement = new MDEncodedNumber(dmang);
+		adjustment = new MDEncodedNumber(dmang);
 		setVirtual();
 		setThunk();
 	}
 
+	@Override
+	public String getModifier() {
+		return "`vtordisp{" + vtorDisplacement + "," + adjustment + "}' ";
+	}
+
 	@Override
 	protected void parseInternal() throws MDException {
 		// 20200507: Believe this to be <offset-to-vtordisp>
-		MDEncodedNumber vtorDisplacement = new MDEncodedNumber(dmang);
 		vtorDisplacement.parse();
 		// 20200507: Believe this to be <static-offset>
-		MDEncodedNumber adjustment = new MDEncodedNumber(dmang);
 		adjustment.parse();
-		nameModifier = "`vtordisp{" + vtorDisplacement + "," + adjustment + "}' ";
 		super.parseInternal();
 	}
 }

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/typeinfo/MDVtordispex.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -24,6 +24,15 @@ import mdemangler.functiontype.MDFunctionType;
  */
 public class MDVtordispex extends MDMemberFunctionInfo {
 
+	// 20200507: Believe this to be <offset-to-vptr>
+	private MDEncodedNumber a = new MDEncodedNumber(dmang);
+	// 20200507: Believe this to be <vbase-offset-offset>
+	private MDEncodedNumber b = new MDEncodedNumber(dmang);
+	// 20200507: Believe this to be <offset-to-vtordisp>
+	private MDEncodedNumber c = new MDEncodedNumber(dmang);
+	// 20200507: Believe this to be <static-offset>
+	private MDEncodedNumber d = new MDEncodedNumber(dmang);
+
 	public MDVtordispex(MDMang dmang) {
 		super(dmang);
 		mdtype = new MDFunctionType(dmang);
@@ -31,21 +40,21 @@ public class MDVtordispex extends MDMemberFunctionInfo {
 		setThunk();
 	}
 
+	@Override
+	public String getModifier() {
+		return "`vtordispex{" + a + "," + b + "," + c + "," + d + "}' ";
+	}
+
 	@Override
 	protected void parseInternal() throws MDException {
 		// 20200507: Believe this to be <offset-to-vptr>
-		MDEncodedNumber a = new MDEncodedNumber(dmang);
 		a.parse();
 		// 20200507: Believe this to be <vbase-offset-offset>
-		MDEncodedNumber b = new MDEncodedNumber(dmang);
 		b.parse();
 		// 20200507: Believe this to be <offset-to-vtordisp>
-		MDEncodedNumber c = new MDEncodedNumber(dmang);
 		c.parse();
 		// 20200507: Believe this to be <static-offset>
-		MDEncodedNumber d = new MDEncodedNumber(dmang);
 		d.parse();
-		nameModifier = "`vtordispex{" + a + "," + b + "," + c + "," + d + "}' ";
 		super.parseInternal();
 	}
 }

Ghidra/Features/MicrosoftDmang/src/main/java/mdemangler/typeinfo/MDVxTable.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -45,6 +45,11 @@ public class MDVxTable extends MDTypeInfo {
 		goodNestedTermination = false;
 	}
 
+	@Override
+	public String getModifier() {
+		return generateNameModifier();
+	}
+
 	public MDCVMod getCVMod() {
 		return cvmod;
 	}
@@ -94,10 +99,9 @@ public class MDVxTable extends MDTypeInfo {
 			dmang.increment();
 			goodNestedTermination = true;
 		}
-		nameModifier = generateNameModifier();
 	}
 
-	String generateNameModifier() {
+	private String generateNameModifier() {
 		if (!goodNestedTermination) {
 			return "{for ??}";
 		}

Ghidra/Features/MicrosoftDmang/src/test/java/mdemangler/MDMangBaseTest.java

@@ -4664,6 +4664,25 @@ public class MDMangBaseTest extends AbstractGenericTest {
 		demangleAndTest();
 	}
 
+	// vbtable with anonymous namespace
+	@Test
+	public void testUnderscore7AnonNs() throws Exception {
+		mangled = "??_7a@?A0xfedcba98@b@@6B@";
+		msTruth = "const b::`anonymous namespace'::a::`vftable'";
+		mdTruth = msTruth;
+		demangleAndTest();
+	}
+
+	// vbtable with anonymous namespace
+	@Test
+	public void testUnderscore7AnonNsAndBackref() throws Exception {
+		mangled = "??_7a@?A0xfedcba98@b@@6B012@01@@";
+		msTruth =
+			"const b::`anonymous namespace'::a::`vftable'{for `b::A0xfedcba98::a's `A0xfedcba98::a'}";
+		mdTruth = msTruth;
+		demangleAndTest();
+	}
+
 	@Test
 	public void testSpecialNames_R() throws Exception {
 		mangled = "??_R0X@8";

Ghidra/Features/MicrosoftDmang/src/test/java/mdemangler/MDMangExtraTest.java

@@ -78,6 +78,64 @@ public class MDMangExtraTest extends AbstractGenericTest {
 		assertEquals("b::a", qualifications.get(0).toString());
 	}
 
+	// Anonymous namespace in owner and backref
+	@Test
+	public void testVxTableAnonymousNsInOwner() throws Exception {
+		String mangled = "??_7a@?A0xfedcba98@b@@6B@";
+		String truth = "const b::`anonymous namespace'::a::`vftable'";
+		String truth2 = "const b::_anon_FEDCBA98::a::`vftable'";
+
+		MDMangGhidra demangler = new MDMangGhidra();
+		demangler.setMangledSymbol(mangled);
+		demangler.setErrorOnRemainingChars(true);
+		demangler.setDemangleOnlyKnownPatterns(true);
+		MDParsableItem item = demangler.demangle();
+
+		MDObjectCPP cppItem = (MDObjectCPP) item;
+		MDVxTable vxTable = (MDVxTable) cppItem.getTypeInfo();
+		List<MDQualification> qualifications = vxTable.getNestedQualifications();
+		assertEquals(0, qualifications.size());
+
+		String demangled = item.toString();
+		assertEquals(truth, demangled);
+
+		demangler.getOutputOptions().setUseEncodedAnonymousNamespace(true);
+		demangled = item.toString();
+		assertEquals(truth2, demangled);
+	}
+
+	// Anonymous namespace in owner and backref
+	@Test
+	public void testVxTableAnonymousNsInOwnerAndBackref() throws Exception {
+		String mangled = "??_7a@?A0xfedcba98@b@@6B012@01@@";
+		String truth =
+			"const b::`anonymous namespace'::a::`vftable'{for `b::A0xfedcba98::a's `A0xfedcba98::a'}";
+		String truth2 =
+			"const b::_anon_FEDCBA98::a::`vftable'{for `b::_anon_FEDCBA98::a's `_anon_FEDCBA98::a'}";
+
+		MDMangGhidra demangler = new MDMangGhidra();
+		demangler.setMangledSymbol(mangled);
+		demangler.setErrorOnRemainingChars(true);
+		demangler.setDemangleOnlyKnownPatterns(true);
+		MDParsableItem item = demangler.demangle();
+
+		MDObjectCPP cppItem = (MDObjectCPP) item;
+		MDVxTable vxTable = (MDVxTable) cppItem.getTypeInfo();
+		List<MDQualification> qualifications = vxTable.getNestedQualifications();
+		assertEquals(2, qualifications.size());
+
+		String demangled = item.toString();
+		assertEquals(truth, demangled);
+		assertEquals("b::A0xfedcba98::a", qualifications.get(0).toString());
+		assertEquals("A0xfedcba98::a", qualifications.get(1).toString());
+
+		demangler.getOutputOptions().setUseEncodedAnonymousNamespace(true);
+		demangled = item.toString();
+		assertEquals(truth2, demangled);
+		assertEquals("b::_anon_FEDCBA98::a", qualifications.get(0).toString());
+		assertEquals("_anon_FEDCBA98::a", qualifications.get(1).toString());
+	}
+
 	// Need to test the demangleType() method to make sure it does the retry with LLVM mode
 	@Test
 	public void testDemangleTypeWithRetry() throws Exception {