GP-4246 - PDB improve types processing - better queuing mechanism, remove placeholder types, delay resolve

Ghidra/Features/Base/ghidra_scripts/FindDataTypeConflictCauseScript.java

@@ -50,7 +50,7 @@ public class FindDataTypeConflictCauseScript extends GhidraScript {
 		}
 
 		List<DataType> selectedDatatypes = dtmService.getSelectedDatatypes();
-		if (selectedDatatypes.size() != 1 || !(selectedDatatypes.get(0) instanceof Composite)) {
+		if (selectedDatatypes.size() != 1) {
 			popup("Select a single conflict datatype before running script");
 			return;
 		}

Ghidra/Features/Base/src/main/java/ghidra/app/util/DataTypeNamingUtil.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.

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/PdbCategories.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.
@@ -35,7 +35,6 @@ public class PdbCategories {
 	private CategoryPath pdbUncategorizedCategory;
 	private CategoryPath anonymousFunctionsCategory;
 	private CategoryPath anonymousTypesCategory;
-	private CategoryPath placeholderTypesCategory;
 	private CategoryPath baseModuleTypedefsCategory;
 	private List<CategoryPath> typedefCategories = new ArrayList<>();
 
@@ -63,8 +62,6 @@ public class PdbCategories {
 //		anonymousFunctionCount = 0;
 
 		anonymousTypesCategory = new CategoryPath(pdbRootCategory, "!_anon_types_");
-
-		placeholderTypesCategory = new CategoryPath(pdbRootCategory, "!_placeholder_types_");
 	}
 
 	/**
@@ -193,14 +190,6 @@ public class PdbCategories {
 		return anonymousTypesCategory;
 	}
 
-	/**
-	 * Returns the {@link CategoryPath} for Anonymous Types Category for the PDB.
-	 * @return the {@link CategoryPath}
-	 */
-	public CategoryPath getPlaceholderTypesCategory() {
-		return placeholderTypesCategory;
-	}
-
 //	/**
 //	 * Returns the name of what should be the next Anonymous Function (based on the count of
 //	 * the number of anonymous functions) so that there is a unique name for the function.

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/AbstractComplexTypeApplier.java

@@ -24,12 +24,12 @@ import ghidra.app.util.pdb.PdbNamespaceUtils;
 /**
  * Applier for {@link AbstractComplexMsType} types.
  */
-public abstract class AbstractComplexTypeApplier extends MsTypeApplier {
+public abstract class AbstractComplexTypeApplier extends MsDataTypeApplier {
 
 	// Intended for: AbstractComplexMsType
 	/**
-	 * Constructor for complex type applier.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Constructor for complex type applier
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public AbstractComplexTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
@@ -56,12 +56,7 @@ public abstract class AbstractComplexTypeApplier extends MsTypeApplier {
 	 */
 	public <T extends AbstractComplexMsType> T getDefinitionType(AbstractComplexMsType mType,
 			Class<T> type) {
-		Integer num = applicator.getNumber(mType);
-		Integer mappedIndex = applicator.getMappedComplexType(num);
-		if (mappedIndex != null) {
-			mType =
-				applicator.getPdb().getTypeRecord(RecordNumber.typeRecordNumber(mappedIndex), type);
-		}
+		mType = applicator.getMappedTypeRecord(mType.getRecordNumber(), type);
 		return type.cast(mType);
 	}
 
@@ -75,11 +70,8 @@ public abstract class AbstractComplexTypeApplier extends MsTypeApplier {
 	//return mine or my def's (and set mine)
 	SymbolPath getFixedSymbolPath(AbstractComplexMsType type) {
 		SymbolPath path = getSymbolPath(type);
-		Integer num = applicator.getNumber(type);
-		Integer mappedIndex = applicator.getMappedComplexType(num);
-		if (mappedIndex != null) {
-			return PdbNamespaceUtils.convertToGhidraPathName(path, mappedIndex);
-		}
+		RecordNumber mappedNumber = applicator.getMappedRecordNumber(type.getRecordNumber());
+		Integer num = mappedNumber.getNumber();
 		return PdbNamespaceUtils.convertToGhidraPathName(path, num);
 	}
 

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/AbstractFunctionTypeApplier.java

@@ -30,13 +30,13 @@ import ghidra.util.exception.InvalidInputException;
 /**
  * Applier for certain function types.
  */
-public abstract class AbstractFunctionTypeApplier extends MsTypeApplier {
+public abstract class AbstractFunctionTypeApplier extends MsDataTypeApplier {
 
 	// Intended for: see children
 	/**
 	 * Constructor for the applicator that applies a "function" type, transforming it into a
-	 * Ghidra DataType.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Ghidra DataType
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public AbstractFunctionTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
@@ -52,28 +52,29 @@ public abstract class AbstractFunctionTypeApplier extends MsTypeApplier {
 	/**
 	 * Returns the function "this" pointer
 	 * @param type the PDB type being inspected
-	 * @param fixupContext the fixup context to use; or pass in null during fixup process
-	 * @param breakCycle specify {@code true} when employing break-cycle logic (pointers to
 	 * Composites within composites)
 	 * @return the "this" pointer or null if does not have or is not a recognized type
 	 * @throws CancelledException upon user cancellation
 	 * @throws PdbException upon processing error
 	 */
-	protected abstract Pointer getThisPointer(AbstractMsType type, FixupContext fixupContext,
-			boolean breakCycle) throws CancelledException, PdbException;
+	protected abstract Pointer getThisPointer(AbstractMsType type)
+			throws CancelledException, PdbException;
 
 	/**
-	 * Returns the containing class if function member of class
+	 * Returns the RecordNumber of the function "this" pointer; {@code null} if not this pointer
 	 * @param type the PDB type being inspected
-	 * @param fixupContext the fixup context to use; or pass in null during fixup process
-	 * @param breakCycle specify {@code true} when employing break-cycle logic (pointers to
-	 * Composites within composites)
-	 * @return the containing class composite type
-	 * @throws CancelledException upon user cancellation
-	 * @throws PdbException upon processing error
+	 * @return the record number of the "this" pointer or null if does not have or is not a
+	 *  recognized type
 	 */
-	protected abstract Composite getContainingComplexApplier(AbstractMsType type,
-			FixupContext fixupContext, boolean breakCycle) throws CancelledException, PdbException;
+	protected abstract RecordNumber getThisPointerRecordNumber(AbstractMsType type);
+
+	/**
+	 * Returns the RecordNumber of the containing class if function member of class; {@code null}
+	 *  if no containing class
+	 * @param type the PDB type being inspected
+	 * @return the record number of the containing class composite type or {@code null} if none
+	 */
+	protected abstract RecordNumber getContainingComplexRecordNumber(AbstractMsType type);
 
 	/**
 	 * Processes containing class if one exists
@@ -105,23 +106,15 @@ public abstract class AbstractFunctionTypeApplier extends MsTypeApplier {
 	protected abstract RecordNumber getArgListRecordNumber(AbstractMsType type);
 
 	private boolean setReturnType(FunctionDefinitionDataType functionDefinition,
-			AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws CancelledException, PdbException {
+			AbstractMsType type) {
 		if (isConstructor(type)) {
 			return true;
 		}
 		RecordNumber returnRecord = getReturnRecordNumber(type);
-		if (returnRecord == null) {
-			return false;
-		}
-		DataType returnType =
-			applicator.getProcessedDataType(returnRecord, fixupContext, breakCycle);
+		DataType returnType = applicator.getDataType(returnRecord);
 		if (returnType == null) {
 			return false;
 		}
-		if (applicator.isPlaceholderPointer(returnType)) {
-			return false;
-		}
 		functionDefinition.setReturnType(returnType);
 		return true;
 	}
@@ -160,43 +153,30 @@ public abstract class AbstractFunctionTypeApplier extends MsTypeApplier {
 		}
 	}
 
-	private boolean setArguments(FunctionDefinitionDataType functionDefinition, AbstractMsType type,
-			FixupContext fixupContext, boolean breakCycle) throws CancelledException, PdbException {
+	private boolean setArguments(FunctionDefinitionDataType functionDefinition, AbstractMsType type)
+			throws CancelledException, PdbException {
 
-		RecordNumber argsRecord = getArgListRecordNumber(type);
-		AbstractMsType aType = applicator.getPdb().getTypeRecord(argsRecord);
-		if (!(aType instanceof AbstractArgumentsListMsType argsList)) {
-			applicator.appendLogMsg(
-				"PDB Warning: expecting args list but found " + aType.getClass().getSimpleName() +
-					" for parameter list of " + functionDefinition.getName());
-			return false;
-		}
+		List<RecordNumber> args = getArgsRecordNumbers(type);
 
-		boolean hasPlaceholder = false;
-
-		List<RecordNumber> args = argsList.getArgRecordNumbers();
 		List<ParameterDefinition> parameterDefinitionList = new ArrayList<>();
 		int parameterCount = 0;
 		for (RecordNumber arg : args) {
 			applicator.checkCancelled();
 
-			AbstractMsType argMsType = applicator.getPdb().getTypeRecord(arg);
+			AbstractMsType argMsType = applicator.getTypeRecord(arg);
 			if (argMsType instanceof PrimitiveMsType primitive && primitive.isNoType()) {
 				// Arguments list is empty. (There better not have been any arguments up until
 				//  now.)
 				break;
 			}
 
-			DataType argDataType = applicator.getProcessedDataType(arg, fixupContext, breakCycle);
+			DataType argDataType = applicator.getDataType(arg);
 			if (argDataType == null) {
 				applicator.appendLogMsg(
 					"PDB Warning: No type conversion for " + argMsType.toString() +
 						" for parameter " + parameterCount + " of " + functionDefinition.getName());
 			}
 			else {
-				if (applicator.isPlaceholderPointer(argDataType)) {
-					hasPlaceholder = true;
-				}
 				try {
 					ParameterDefinition parameterDefinition =
 						new ParameterDefinitionImpl(null, argDataType, "");
@@ -225,49 +205,90 @@ public abstract class AbstractFunctionTypeApplier extends MsTypeApplier {
 				}
 			}
 		}
-		if (hasPlaceholder) {
-			return false;
-		}
 		functionDefinition.setArguments(parameterDefinitionList
 				.toArray(new ParameterDefinition[parameterDefinitionList.size()]));
 		return true;
 	}
 
 	@Override
-	public DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
+	boolean apply(AbstractMsType type)
 			throws CancelledException, PdbException {
-		DataType existing = applicator.getDataType(type);
-		if (existing != null) {
-			return existing;
+
+		if (!precheckOrScheduleDependencies(type)) {
+			return false;
 		}
+
 		FunctionDefinitionDataType functionDefinition = new FunctionDefinitionDataType(
 			applicator.getAnonymousFunctionsCategory(), "_func", applicator.getDataTypeManager());
 
-		boolean hasPlaceholder = false;
-
 		processContainingType(type);
+		setReturnType(functionDefinition, type);
+		setArguments(functionDefinition, type);
+		Pointer thisPointer = getThisPointer(type);
 
-		if (!setReturnType(functionDefinition, type, fixupContext, breakCycle)) {
-			hasPlaceholder = true;
-		}
-
-		if (!setArguments(functionDefinition, type, fixupContext, breakCycle)) {
-			hasPlaceholder = true;
-		}
-
-		if (hasPlaceholder) {
-			return null;
-		}
-
-		Pointer thisPointer = getThisPointer(type, fixupContext, breakCycle);
 		CallingConvention convention = getCallingConvention(type);
 		setCallingConvention(functionDefinition, convention, thisPointer);
 
 		DataTypeNamingUtil.setMangledAnonymousFunctionName(functionDefinition);
+		DataType dataType = functionDefinition;
 
-		DataType resolvedType = applicator.resolve(functionDefinition);
-		applicator.putDataType(type, resolvedType);
-		return resolvedType;
+		applicator.putDataType(type, dataType);
+		return true;
+	}
+
+	/**
+	 * Uses {@link DefaultPdbApplicator#getDataTypeOrSchedule(Integer)}) on all underlying types
+	 *  to ensure that the types get scheduled... and detects whether any types were not yet
+	 *  available so that this composite type is denoted as not done.
+	 * @param type the MS type of the function
+	 * @return {@code true} if all underlying types are already available
+	 * @throws PdbException upon processing issue
+	 */
+	private boolean precheckOrScheduleDependencies(AbstractMsType type)
+			throws PdbException {
+		boolean done = true;
+
+		RecordNumber returnRecordNumber = getReturnRecordNumber(type);
+		DataType dt = applicator.getDataTypeOrSchedule(returnRecordNumber);
+		if (dt == null) {
+			done = false;
+		}
+
+		List<RecordNumber> args = getArgsRecordNumbers(type);
+		for (RecordNumber argRecordNumber : args) {
+			dt = applicator.getDataTypeOrSchedule(argRecordNumber);
+			if (dt == null) {
+				done = false;
+			}
+		}
+
+		RecordNumber thisRecordNumber = getThisPointerRecordNumber(type);
+		if (thisRecordNumber != null) {
+			dt = applicator.getDataTypeOrSchedule(thisRecordNumber);
+			if (dt == null) {
+				done = false;
+			}
+		}
+
+		RecordNumber containerRecordNumber = getContainingComplexRecordNumber(type);
+		if (containerRecordNumber != null) {
+			dt = applicator.getDataTypeOrSchedule(containerRecordNumber);
+			if (dt == null) {
+				done = false;
+			}
+		}
+
+		return done;
+	}
+
+	private List<RecordNumber> getArgsRecordNumbers(AbstractMsType type) throws PdbException {
+		RecordNumber argsRecord = getArgListRecordNumber(type);
+		AbstractMsType aType = applicator.getTypeRecord(argsRecord);
+		if (!(aType instanceof AbstractArgumentsListMsType argsList)) {
+			throw new PdbException(
+				"Expecting arguments list but got: " + aType.getClass().getSimpleName());
+		}
+		return argsList.getArgRecordNumbers();
 	}
 
 }

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/ArgumentsListTypeApplier.java

@@ -15,32 +15,22 @@
  */
 package ghidra.app.util.pdb.pdbapplicator;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractArgumentsListMsType;
-import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractMsType;
-import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
 
 /**
  * Applier for {@link AbstractArgumentsListMsType} types.
  */
-public class ArgumentsListTypeApplier extends MsTypeApplier {
+public class ArgumentsListTypeApplier extends MsDataTypeComponentApplier {
 
 	// Intended for: AbstractArgumentsListMsType
 	/**
-	 * Constructor for the applicator that applies a arguments list.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
-	 * @throws IllegalArgumentException Upon invalid arguments.
+	 * Constructor for the applicator that applies a arguments list
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
+	 * @throws IllegalArgumentException Upon invalid arguments
 	 */
-	public ArgumentsListTypeApplier(DefaultPdbApplicator applicator) throws IllegalArgumentException {
+	public ArgumentsListTypeApplier(DefaultPdbApplicator applicator)
+			throws IllegalArgumentException {
 		super(applicator);
 	}
 
-	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		// do nothing
-		return null;
-	}
-
 }

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/ArrayTypeApplier.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.
@@ -28,66 +28,50 @@ import ghidra.util.exception.CancelledException;
 /**
  * Applier for {@link AbstractArrayMsType} types.
  */
-public class ArrayTypeApplier extends MsTypeApplier {
+public class ArrayTypeApplier extends MsDataTypeApplier {
 
 	// Intended for: AbstractArrayMsType
 	/**
 	 * Constructor for the applicator that applies a "array" type, transforming it into a
-	 * Ghidra DataType.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Ghidra DataType
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public ArrayTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
 	}
 
 	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		return applyType((AbstractArrayMsType) type, fixupContext);
+	boolean apply(AbstractMsType type) throws PdbException, CancelledException {
+
+		AbstractArrayMsType arrayType = (AbstractArrayMsType) type;
+		// Doing pre-check on type first using the getDataTypeOrSchedule method.  The logic is
+		//  simpler here for Composites or Functions because we only have one dependency type,
+		//  so we are not doing a separate call to a pre-check method as there is in those appliers.
+		//  If type is not available, return false.
+		RecordNumber underlyingRecordNumber = arrayType.getElementTypeRecordNumber();
+		DataType underlyingDataType = applicator.getDataTypeOrSchedule(underlyingRecordNumber);
+		if (underlyingDataType == null) {
+			return false;
+		}
+
+		int numElements = calculateNumElements(arrayType, underlyingDataType);
+		if (numElements == -1) {
+			// There was a math calculation problem (probably have the wrong underlying type,
+			// which we still need to figure out; i.e., better composite mapper) so we
+			// will change the underlying type for now...
+			underlyingDataType = Undefined1DataType.dataType;
+			numElements = getSizeInt(arrayType); // array size (but divided by 1) is array size
+		}
+		DataType dataType = new ArrayDataType(underlyingDataType, numElements, -1,
+			applicator.getDataTypeManager());
+		applicator.putDataType(arrayType, dataType);
+		return true;
 	}
 
 	boolean isFlexibleArray(AbstractMsType type) {
 		return BigInteger.ZERO.equals(type.getSize());
 	}
 
-	private DataType applyType(AbstractArrayMsType type, FixupContext fixupContext)
-			throws CancelledException, PdbException {
-		if (fixupContext != null) {
-			DataType existingDt = applicator.getDataType(type);
-			if (existingDt != null) {
-				return existingDt;
-			}
-		}
-
-		RecordNumber underlyingRecord = type.getElementTypeRecordNumber();
-		DataType underlyingDataType =
-			applicator.getProcessedDataType(underlyingRecord, fixupContext, false);
-
-		DataType dataType;
-		if (applicator.isPlaceholderType(underlyingDataType)) {
-			Long longArraySize = getSizeLong(type);
-			int intArraySize = longArraySize.intValue();
-			dataType =
-				applicator.getPlaceholderArray(intArraySize, underlyingDataType.getAlignment());
-		}
-		else {
-			int numElements = calculateNumElements(type, underlyingDataType);
-			if (numElements == -1) {
-				// There was a math calculation problem (probably have the wrong underlying type,
-				// which we still need to figure out; i.e., better composite mapper) so we
-				// will change the underlying type for now...
-				underlyingDataType = Undefined1DataType.dataType;
-				numElements = getSizeInt(type); // array size (but divided by 1) is array size
-			}
-			dataType = new ArrayDataType(underlyingDataType, numElements, -1,
-				applicator.getDataTypeManager());
-		}
-
-		DataType resolvedType = applicator.resolve(dataType);
-		applicator.putDataType(type, resolvedType);
-		return resolvedType;
-	}
-
 	private int calculateNumElements(AbstractArrayMsType type, DataType underlyingDataType) {
 
 		if (underlyingDataType == null) {

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/BaseClassTypeApplier.java

@@ -15,24 +15,21 @@
  */
 package ghidra.app.util.pdb.pdbapplicator;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
-import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
 
 /**
  * Applier for {@link AbstractBaseClassMsType}, {@link AbstractVirtualBaseClassMsType}, and
  * {@link AbstractIndirectVirtualBaseClassMsType} types.
  */
-public class BaseClassTypeApplier extends MsTypeApplier {
+public class BaseClassTypeApplier extends MsDataTypeComponentApplier {
 
 	// Intended for: AbstractBaseClassMsType, AbstractVirtualBaseClassMsType, or
 	//  AbstractIndirectVirtualBaseClassMsType
 	/**
-	 * Constructor for base class applier.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
-	 * @throws IllegalArgumentException Upon invalid arguments.
+	 * Constructor for base class applier
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
+	 * @throws IllegalArgumentException Upon invalid arguments
 	 */
 	public BaseClassTypeApplier(DefaultPdbApplicator applicator)
 			throws IllegalArgumentException {
@@ -54,13 +51,6 @@ public class BaseClassTypeApplier extends MsTypeApplier {
 		return ((AbstractIndirectVirtualBaseClassMsType) type).getBaseClassRecordNumber();
 	}
 
-	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		// do nothing
-		return null;
-	}
-
 	private static AbstractMsType validateType(AbstractMsType type)
 			throws IllegalArgumentException {
 		if (!(type instanceof AbstractBaseClassMsType) &&

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/BitfieldTypeApplier.java

@@ -27,36 +27,42 @@ import ghidra.util.exception.CancelledException;
 /**
  * Applier for {@link AbstractBitfieldMsType} types.
  */
-public class BitfieldTypeApplier extends MsTypeApplier {
+public class BitfieldTypeApplier extends MsDataTypeApplier {
 
 	// Intended for: AbstractBitfieldMsType
 	/**
-	 * Constructor for bitfield applier.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Constructor for bitfield applier
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public BitfieldTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
 	}
 
 	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
+	boolean apply(AbstractMsType type) throws PdbException, CancelledException {
+
 		AbstractBitfieldMsType mType = (AbstractBitfieldMsType) type;
+		// Doing pre-check on type first using the getDataTypeOrSchedule method.  The logic is
+		//  simpler here for Composites or Functions because we only have one dependency type,
+		//  so we are not doing a separate call to a pre-check method as there is in those appliers.
+		//  If type is not available, return false.
 		RecordNumber elementRecordNumber = mType.getElementRecordNumber();
-		DataType baseDataType =
-			applicator.getProcessedDataType(elementRecordNumber, fixupContext, breakCycle);
+		DataType baseDataType = applicator.getDataTypeOrSchedule(elementRecordNumber);
+		if (baseDataType == null) {
+			return false;
+		}
+
 		DataType bitFieldDataType;
 		try {
 			bitFieldDataType = new Pdb2BitField(baseDataType.clone(applicator.getDataTypeManager()),
 				mType.getBitLength(), mType.getBitPosition());
 		}
 		catch (InvalidDataTypeException e) {
-			applicator.appendLogMsg(
+			throw new PdbException(
 				"Problem creating PdbBitField for " + type.getName() + ", error: " + e.toString());
-			return null;
 		}
-		// do not resolve bit-fields!
-		return bitFieldDataType;
+		applicator.putDataType(mType, bitFieldDataType);
+		return true;
 	}
 
 	/**

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/ComplexTypeMapper.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.
@@ -19,6 +19,7 @@ import java.util.*;
 
 import ghidra.app.util.SymbolPath;
 import ghidra.app.util.SymbolPathParser;
+import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.TypeProgramInterface;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
 import ghidra.util.exception.CancelledException;
@@ -26,7 +27,7 @@ import ghidra.util.task.TaskMonitor;
 
 /**
  * Maps forward references with corresponding definitions for composites and enums.  Map is of
- * record number (index) to record number (index)--always of TYPE RecordCategory, as we are not
+ * RecordNumber to RecordNumber--always of TYPE RecordCategory, as we are not
  * expecting Complex type records numbers to be mapped from ITEM RecordCategory lists. We are
  * always creating a map of higher number to lower number, as we are assuming that processing
  * will be done in an increasing-record-number order.
@@ -40,35 +41,27 @@ import ghidra.util.task.TaskMonitor;
 //  tried.
 public class ComplexTypeMapper {
 
-	private Map<Integer, Integer> map;
+	private Map<RecordNumber, RecordNumber> map;
 
 	//==============================================================================================
 	public ComplexTypeMapper() {
 		map = new HashMap<>();
 	}
 
-//	/**
-//	 * Returns map to alternate record number or argument record number if no map.  Result is
-//	 *  record number of alternative record for the complex type.  It should be the lower of the
-//	 *  two numbers for the set of fwdref and def records, with the fwdref generally, but not
-//	 *  always, the lower-numbered record.
-//	 * @param recordNumber the record number for which to do the lookup
-//	 * @return the mapped number
-//	 */
 	/**
 	 * Returns map to alternate record number or argument record number if no map.  Result is
-	 *  record number of alternative record for the complex type.  Map is of fwdref to definition
-	 *  numbers.  The fwdref number is generally, but not always, the lower number
+	 *  RecordNumber of alternative record for the complex type.  Map is of fwdref to definition
+	 *  RecordNumbers.  The fwdref number is generally, but not always, the lower number
 	 * @param recordNumber the record number for which to do the lookup
-	 * @return the mapped number
+	 * @return the mapped record number or the original record number if no mapped entry
 	 */
-	public Integer getMapped(int recordNumber) {
+	public RecordNumber getMapped(RecordNumber recordNumber) {
 		return map.getOrDefault(recordNumber, recordNumber);
 	}
 
 	// Storing type (isFwd or isDef) so that if we decide to parse Types on demand, we will not
 	// have to parse it again to see if it is a fwdref or def.
-	private record NumFwdRef(int number, boolean isFwd) {}
+	private record NumFwdRef(RecordNumber number, boolean isFwd) {}
 
 	//==============================================================================================
 	//==============================================================================================
@@ -131,6 +124,7 @@ public class ComplexTypeMapper {
 
 		SymbolPath symbolPath = new SymbolPath(SymbolPathParser.parse(complexType.getName()));
 		boolean isFwdRef = complexType.getMsProperty().isForwardReference();
+		RecordNumber recordNumber = complexType.getRecordNumber();
 
 		Deque<NumFwdRef> numTypeFIFO = typeFIFOsByPath.get(symbolPath);
 		if (numTypeFIFO == null) {
@@ -138,7 +132,7 @@ public class ComplexTypeMapper {
 			typeFIFOsByPath.put(symbolPath, numTypeFIFO);
 
 			// Putting forward reference or definition (doesn't matter which it is)
-			if (!numTypeFIFO.add(new NumFwdRef(indexNumber, isFwdRef))) {
+			if (!numTypeFIFO.add(new NumFwdRef(recordNumber, isFwdRef))) {
 				// Error
 			}
 		}
@@ -148,7 +142,7 @@ public class ComplexTypeMapper {
 			// If same in FIFO, then add to bottom of the FIFO, as all records on this FIFO
 			//  will be the same per this algorithm.
 			if (firstNumFwdRef.isFwd() == isFwdRef) {
-				if (!numTypeFIFO.add(new NumFwdRef(indexNumber, isFwdRef))) {
+				if (!numTypeFIFO.add(new NumFwdRef(recordNumber, isFwdRef))) {
 					// Error
 				}
 			}
@@ -167,7 +161,7 @@ public class ComplexTypeMapper {
 				//  symbol path and we need the fwdref symbol path to be the same.  Thus we
 				//  want to be able to have ready access to the def record.
 				if (isFwdRef) {
-					map.put(indexNumber, firstNumFwdRef.number());
+					map.put(recordNumber, firstNumFwdRef.number());
 //					// Following is just temporary during development to compare with
 //					//  previous mapping capability.  TODO remove
 //					System.out.println(String.format("%d %s %d -> %d",
@@ -175,7 +169,7 @@ public class ComplexTypeMapper {
 //					indexNumber, firstNumFwdRef.number()));
 				}
 				else {
-					map.put(firstNumFwdRef.number(), indexNumber);
+					map.put(firstNumFwdRef.number(), recordNumber);
 //					// Following is just temporary during development to compare with
 //					//  previous mapping capability.  TODO remove
 //					System.out.println(String.format("%d %s %d <- %d",

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/DataSymbolApplier.java

@@ -15,7 +15,8 @@
  */
 package ghidra.app.util.pdb.pdbapplicator;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.*;
+import ghidra.app.util.bin.format.pdb2.pdbreader.MsSymbolIterator;
+import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.symbol.AbstractDataMsSymbol;
 import ghidra.app.util.bin.format.pdb2.pdbreader.symbol.AbstractMsSymbol;
 import ghidra.program.model.address.Address;
@@ -47,14 +48,13 @@ public class DataSymbolApplier extends MsSymbolApplier
 	@Override
 	public void apply(MsSymbolIterator iter) throws PdbException, CancelledException {
 		getValidatedSymbol(iter, true);
+		Address address = applicator.getAddress(symbol);
+		if (applicator.isInvalidAddress(address, symbol.getName())) {
+			return;
+		}
+		// createData() can return false on failure, but we want to put the symbol down regardless
+		createData(address);
 		Address symbolAddress = applicator.getAddress(symbol);
-		if (applicator.isInvalidAddress(symbolAddress, symbol.getName())) {
-			return;
-		}
-		RecordNumber typeRecordNumber = symbol.getTypeRecordNumber();
-		if (!createData(symbol, symbolAddress, typeRecordNumber)) {
-			return;
-		}
 		applicator.createSymbol(symbolAddress, symbol.getName(), false);
 	}
 
@@ -62,36 +62,29 @@ public class DataSymbolApplier extends MsSymbolApplier
 	public void applyTo(NestingSymbolApplier applyToApplier, MsSymbolIterator iter)
 			throws PdbException, CancelledException {
 		getValidatedSymbol(iter, true);
-		if (applyToApplier instanceof FunctionSymbolApplier) {
-			FunctionSymbolApplier functionSymbolApplier = (FunctionSymbolApplier) applyToApplier;
-			DataType dataType = applicator.getCompletedDataType(symbol.getTypeRecordNumber());
-			if (dataType == null) { // TODO: check that we can have null here.
-				return; // silently return.
-			}
+		if (applyToApplier instanceof FunctionSymbolApplier functionSymbolApplier) {
 			Address address = applicator.getAddress(symbol);
-			if (!createData(symbol, address, dataType)) {
-				return;
+			if (applicator.isInvalidAddress(address, symbol.getName())) {
+				return; // silently return
 			}
+			// createData() can return false on failure, but we want to put the symbol down regardless
+			createData(address);
+			DataType dataType = applicator.getCompletedDataType(symbol.getTypeRecordNumber());
 			functionSymbolApplier.setLocalVariable(address, symbol.getName(), dataType);
 		}
 	}
 
 	MsTypeApplier getTypeApplier(AbstractMsSymbol abstractSymbol) {
-		if (!(abstractSymbol instanceof AbstractDataMsSymbol symbol)) {
+		if (!(abstractSymbol instanceof AbstractDataMsSymbol dataSymbol)) {
 			throw new AssertException(
 				"Invalid symbol type: " + abstractSymbol.getClass().getSimpleName());
 		}
-		return applicator.getTypeApplier(symbol.getTypeRecordNumber());
+		return applicator.getTypeApplier(dataSymbol.getTypeRecordNumber());
 	}
 
-	boolean createData(AbstractDataMsSymbol symbol, Address address, RecordNumber typeRecordNumber)
-			throws CancelledException, PdbException {
-		DataType dataType = applicator.getCompletedDataType(typeRecordNumber);
-		return createData(symbol, address, dataType);
-	}
-
-	boolean createData(AbstractDataMsSymbol symbol, Address address, DataType dataType) {
-		if (applicator.isInvalidAddress(address, symbol.getName())) {
+	boolean createData(Address address) throws CancelledException, PdbException {
+		DataType dataType = applicator.getCompletedDataType(symbol.getTypeRecordNumber());
+		if (dataType == null) { // TODO: check that we can have null here.
 			return false;
 		}
 		if (applicator.getImageBase().equals(address) &&
@@ -121,7 +114,7 @@ public class DataSymbolApplier extends MsSymbolApplier
 		if (cu != null) {
 			if ((cu instanceof Instruction) || !address.equals(cu.getAddress())) {
 				applicator.appendLogMsg("Warning: Did not create data type \"" +
-					dataType.getDisplayName() + "\" at address " + address + " due to conflict");
+					dataType.getName() + "\" at address " + address + " due to conflict");
 				return;
 			}
 			Data d = (Data) cu;

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/EnumTypeApplier.java

@@ -21,7 +21,6 @@ import ghidra.app.util.SymbolPath;
 import ghidra.app.util.bin.format.pdb2.pdbreader.*;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
 import ghidra.program.model.data.*;
-import ghidra.program.model.data.Enum;
 import ghidra.util.Msg;
 import ghidra.util.exception.CancelledException;
 
@@ -32,17 +31,15 @@ public class EnumTypeApplier extends AbstractComplexTypeApplier {
 
 	// Intended for: AbstractEnumMsType
 	/**
-	 * Constructor for enum type applier, for transforming a enum into a
-	 * Ghidra DataType.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Constructor for enum type applier, for transforming a enum into a Ghidra DataType
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public EnumTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
 	}
 
-	private long getMask(AbstractEnumMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws CancelledException, PdbException {
-		switch (getLength(type, fixupContext, breakCycle)) {
+	private long getMask(AbstractEnumMsType type) {
+		switch (getLength(type)) {
 			case 1:
 				return 0xffL;
 			case 2:
@@ -54,24 +51,21 @@ public class EnumTypeApplier extends AbstractComplexTypeApplier {
 		}
 	}
 
-	private int getLength(AbstractEnumMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws CancelledException, PdbException {
-		DataType underlyingDataType = getUnderlyingDataType(type, fixupContext, breakCycle);
+	private int getLength(AbstractEnumMsType type) {
+		DataType underlyingDataType = getUnderlyingDataType(type);
 		if (underlyingDataType == null) {
 			return 1;
 		}
 		return Integer.max(underlyingDataType.getLength(), 1);
 	}
 
-	private DataType getUnderlyingDataType(AbstractEnumMsType type, FixupContext fixupContext,
-			boolean breakCycle) throws CancelledException, PdbException {
+	private DataType getUnderlyingDataType(AbstractEnumMsType type) {
 		RecordNumber underlyingRecordNumber = type.getUnderlyingRecordNumber();
-		return applicator.getProcessedDataType(underlyingRecordNumber, fixupContext, breakCycle);
+		return applicator.getDataType(underlyingRecordNumber);
 	}
 
-	boolean isSigned(AbstractEnumMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws CancelledException, PdbException {
-		DataType underlyingType = getUnderlyingDataType(type, fixupContext, breakCycle);
+	boolean isSigned(AbstractEnumMsType type) {
+		DataType underlyingType = getUnderlyingDataType(type);
 		if (underlyingType == null) {
 			return false;
 		}
@@ -81,8 +75,7 @@ public class EnumTypeApplier extends AbstractComplexTypeApplier {
 		return false;
 	}
 
-	private EnumDataType createEmptyEnum(AbstractEnumMsType type, FixupContext fixupContext,
-			boolean breakCycle) throws CancelledException, PdbException {
+	private EnumDataType createEmptyEnum(AbstractEnumMsType type) {
 
 		AbstractEnumMsType defType = getDefinitionType(type);
 
@@ -90,39 +83,31 @@ public class EnumTypeApplier extends AbstractComplexTypeApplier {
 		CategoryPath categoryPath = applicator.getCategory(fixedPath.getParent());
 
 		EnumDataType enumDataType = new EnumDataType(categoryPath, fixedPath.getName(),
-			getLength(defType, fixupContext, breakCycle), applicator.getDataTypeManager());
+			getLength(defType), applicator.getDataTypeManager());
 
 		return enumDataType;
 	}
 
 	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
+	boolean apply(AbstractMsType type)
 			throws PdbException, CancelledException {
 		//Ghidra cannot handle fwdrefs and separate definitions for enumerates as it can for
 		//  composites.  Thus, we will just try to provide the defined version now.
-		Integer number = applicator.getNumber(type);
-		Integer mapped = applicator.getMappedComplexType(number);
-		AbstractEnumMsType definedEnum = (AbstractEnumMsType) applicator.getPdb()
-				.getTypeRecord(RecordNumber.typeRecordNumber(mapped));
+		AbstractEnumMsType definedEnum =
+			(AbstractEnumMsType) applicator.getMappedTypeRecord(type.getRecordNumber());
 
-		DataType existingDt = applicator.getDataType(mapped);
-		if (existingDt != null) {
-			if (!(existingDt instanceof Enum)) {
-				throw new PdbException("PDB error retrieving Enum type");
-			}
-			return existingDt;
-		}
+		// Note that we do not need to check on underlying data types, as there are none.
 
-		EnumDataType enumDataType = createEmptyEnum(definedEnum, fixupContext, breakCycle);
-		applyEnumMsType(enumDataType, definedEnum, fixupContext, breakCycle);
+		EnumDataType enumDataType = createEmptyEnum(definedEnum);
+		applyEnumMsType(enumDataType, definedEnum);
 
-		DataType dataType = applicator.resolve(enumDataType);
-		applicator.putDataType(mapped, dataType);
-		return dataType;
+		DataType dataType = enumDataType;
+		applicator.putDataType(definedEnum, dataType);
+		return true;
 	}
 
-	private EnumDataType applyEnumMsType(EnumDataType enumDataType, AbstractEnumMsType type,
-			FixupContext fixupContext, boolean breakCycle) throws PdbException, CancelledException {
+	private EnumDataType applyEnumMsType(EnumDataType enumDataType, AbstractEnumMsType type)
+			throws PdbException {
 
 		if (enumDataType.getCount() != 0) {
 			//already applied
@@ -147,19 +132,18 @@ public class EnumTypeApplier extends AbstractComplexTypeApplier {
 				enumerates.size() + " available for " + fullPathName);
 		}
 
-		int length = getLength(type, fixupContext, breakCycle);
-		boolean isSigned = isSigned(type, fixupContext, breakCycle);
+		int length = getLength(type);
+		boolean isSigned = isSigned(type);
 		for (AbstractEnumerateMsType enumerateType : enumerates) {
 			SymbolPath memberSymbolPath = new SymbolPath(enumerateType.getName());
 			enumDataType.add(memberSymbolPath.getName(), narrowingConversion(type, length, isSigned,
-				enumerateType.getNumeric(), fixupContext, breakCycle));
+				enumerateType.getNumeric()));
 		}
 		return enumDataType;
 	}
 
 	private long narrowingConversion(AbstractEnumMsType type, int outputSize, boolean outputSigned,
-			Numeric numeric, FixupContext fixupContext, boolean breakCycle)
-			throws CancelledException, PdbException {
+			Numeric numeric) {
 		if (!numeric.isIntegral()) {
 			Msg.info(this, "Non-integral numeric found: " + numeric);
 			return 0;
@@ -168,7 +152,7 @@ public class EnumTypeApplier extends AbstractComplexTypeApplier {
 			pdbLogAndInfoMessage(this, "Using zero in place of non-integral enumerate: " + numeric);
 			return 0L; //
 		}
-		return numeric.getIntegral().longValue() & getMask(type, fixupContext, breakCycle);
+		return numeric.getIntegral().longValue() & getMask(type);
 	}
 
 	private AbstractEnumMsType getDefinitionType(AbstractComplexMsType type) {

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/EnumerateTypeApplier.java

@@ -16,37 +16,24 @@
 package ghidra.app.util.pdb.pdbapplicator;
 
 import ghidra.app.util.bin.format.pdb2.pdbreader.Numeric;
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractEnumerateMsType;
-import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractMsType;
 import ghidra.app.util.pdb.PdbNamespaceUtils;
 import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
 
 /**
  * Applier for {@link AbstractEnumerateMsType} types.
  */
-public class EnumerateTypeApplier extends MsTypeApplier {
+public class EnumerateTypeApplier extends MsDataTypeComponentApplier {
 
 	// Intended for: AbstractEnumerateMsType
 	/**
-	 * Constructor for enumerate type applier, for transforming a enumerate into a
-	 * Ghidra DataType.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Constructor for enumerate type applier, for transforming a enumerate into a Ghidra DataType
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public EnumerateTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
 	}
 
-	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		DataType dataType = applyEnumerateMsType((AbstractEnumerateMsType) type);
-		//dataType is null for now... so no resolve
-		//return applicator.resolve(dataType);
-		return null;
-	}
-
 	String getName(AbstractEnumerateMsType type) {
 		return PdbNamespaceUtils.fixUnnamed(type.getName(), type.getRecordNumber().getNumber());
 	}

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/FieldListTypeApplier.java

@@ -21,14 +21,12 @@ import java.util.List;
 import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
-import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
 
 /**
  * Applier for {@link AbstractFieldListMsType} types and {@code NO_TYPE} when in place of the
  * former type.
  */
-public class FieldListTypeApplier extends MsTypeApplier {
+public class FieldListTypeApplier extends MsDataTypeComponentApplier {
 
 	//TODO: evaluate the static method and multiple constructors... what can be cleaned up with
 	// regard to these and the possible NoType record???
@@ -46,35 +44,30 @@ public class FieldListTypeApplier extends MsTypeApplier {
 	}
 
 	/**
-	 * Constructor.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
-	 * @throws IllegalArgumentException Upon invalid arguments.
+	 * Constructor
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
+	 * @throws IllegalArgumentException Upon invalid arguments
 	 */
 	public FieldListTypeApplier(DefaultPdbApplicator applicator) throws IllegalArgumentException {
 		super(applicator);
 	}
 
-	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		// do nothing
-		return null;
-	}
-
 	//==============================================================================================
 
 	record FieldLists(List<AbstractMsType> bases, List<AbstractMsType> members,
 			List<AbstractMemberMsType> nonstaticMembers,
+			List<AbstractStaticMemberMsType> staticMembers,
 			List<AbstractVirtualFunctionTablePointerMsType> vftPtrs, List<AbstractMsType> methods,
 			List<AbstractNestedTypeMsType> nestedTypes, List<AbstractEnumerateMsType> enumerates) {}
 
 	//==============================================================================================
 
 	FieldLists getFieldLists(RecordNumber recordNumber) throws PdbException {
-		AbstractMsType type = applicator.getPdb().getTypeRecord(recordNumber);
+		AbstractMsType type = applicator.getTypeRecord(recordNumber);
 		if (type instanceof PrimitiveMsType primitive && primitive.isNoType()) {
 			return new FieldLists(new ArrayList<>(), new ArrayList<>(), new ArrayList<>(),
-				new ArrayList<>(), new ArrayList<>(), new ArrayList<>(), new ArrayList<>());
+				new ArrayList<>(), new ArrayList<>(), new ArrayList<>(), new ArrayList<>(),
+				new ArrayList<>());
 		}
 		else if (type instanceof AbstractFieldListMsType fieldListType) {
 			return getFieldLists(fieldListType);
@@ -98,6 +91,8 @@ public class FieldListTypeApplier extends MsTypeApplier {
 		}
 		List<AbstractMemberMsType> nonstaticMembers =
 			new ArrayList<>(fieldListType.getNonStaticMembers());
+		List<AbstractStaticMemberMsType> staticMembers =
+			new ArrayList<>(fieldListType.getStaticMembers());
 		List<AbstractVirtualFunctionTablePointerMsType> vftPtrs =
 			new ArrayList<>(fieldListType.getVftPointers());
 		List<AbstractNestedTypeMsType> nestedTypes =
@@ -115,6 +110,7 @@ public class FieldListTypeApplier extends MsTypeApplier {
 				members.addAll(lists.members());
 				methods.addAll(lists.methods());
 				nonstaticMembers.addAll(lists.nonstaticMembers());
+				staticMembers.addAll(lists.staticMembers());
 				vftPtrs.addAll(lists.vftPtrs());
 				nestedTypes.addAll(lists.nestedTypes());
 				enumerates.addAll(lists.enumerates());
@@ -124,7 +120,8 @@ public class FieldListTypeApplier extends MsTypeApplier {
 			}
 		}
 
-		return new FieldLists(bases, members, nonstaticMembers, vftPtrs, methods, nestedTypes,
+		return new FieldLists(bases, members, nonstaticMembers, staticMembers, vftPtrs, methods,
+			nestedTypes,
 			enumerates);
 	}
 

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/FixupContext.java

@@ -1,313 +0,0 @@
-/* ###
- * 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 ghidra.app.util.pdb.pdbapplicator;
-
-import java.util.*;
-
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
-import ghidra.program.model.data.DataType;
-
-/**
- * Applier context used for fixups of data types
- */
-public class FixupContext {
-
-	private Deque<Integer> stagedRecordFifo = new ArrayDeque<>();
-	private Deque<Integer> inProgressRecordStack = new ArrayDeque<>();
-	private Deque<Integer> fixupRecordFifo = new ArrayDeque<>();
-
-	private Map<Integer, List<Integer>> map = new HashMap<>();
-	private Map<Integer, DataType> fixupTypes = new HashMap<>();
-
-	/**
-	 * Checks that record is already being processed and, if not, adds it to the Staged state
-	 * @param record the number of the record
-	 * @throws PdbException upon the record already in the process or fixup state
-	 */
-	void ensureInContext(int record) throws PdbException {
-		if (inProgressRecordStack.contains(record)) {
-			return;
-		}
-		if (fixupRecordFifo.contains(record)) {
-			return;
-		}
-		addStagedRecord(record);
-	}
-
-	DataType getFixupDataType(int record) {
-		return fixupTypes.get(record);
-	}
-
-	/**
-	 * Adds record to the Staged state if not already there
-	 * @param recordNumber the number of the record
-	 * @throws PdbException upon the record already in the process or fixup state
-	 */
-	void addStagedRecord(int recordNumber) throws PdbException {
-		if (stagedRecordFifo.contains(recordNumber)) {
-			return;
-		}
-		if (inProgressRecordStack.contains(recordNumber)) {
-			throw new PdbException("Record Number in process state: " + recordNumber);
-		}
-		if (fixupRecordFifo.contains(recordNumber)) {
-			throw new PdbException("Record Number in fixup state: " + recordNumber);
-		}
-		if (map.containsKey(recordNumber)) {
-			throw new PdbException("Record Number already exists: " + recordNumber);
-		}
-		map.put(recordNumber, new ArrayList<>());
-		putStagedRecord(recordNumber);
-	}
-
-	/**
-	 * Moves the next record in the Staged state to the process state and returns its number
-	 * @return the number of the record moved
-	 * @throws PdbException if the record happens to be in another state (should not happen if
-	 * in the Staged state)
-	 */
-	Integer moveFromStagedToProcessRecord() throws PdbException {
-		Integer record = getStagedRecord();
-		if (record != null) {
-			putProcessRecord(record);
-		}
-		return record;
-	}
-
-	/**
-	 * Puts the specified record number from the Staged state to the Process state
-	 * @param number the number of the record
-	 * @throws PdbException if the record is not in the Staged state
-	 */
-	void moveFromStagedToProcessRecord(int number) throws PdbException {
-		if (!stagedRecordFifo.remove(number)) {
-			throw new PdbException("Number not in Staged state: " + number);
-		}
-		putProcessRecord(number);
-	}
-
-	/**
-	 * Puts the specified record to the head of the Process state.  If the record had been
-	 *  in the Staged state or anywhere else in the Process state, it is moved to the head of the
-	 *  Process state
-	 * @param number the number of the record
-	 * @throws PdbException if the records is not in the Staged state
-	 */
-	void moveToHeadProcessRecord(int number) throws PdbException {
-		if (stagedRecordFifo.contains(number)) {
-			stagedRecordFifo.remove(number);
-		}
-		else if (inProgressRecordStack.contains(number)) {
-			inProgressRecordStack.remove(number);
-			inProgressRecordStack.offerFirst(number);
-		}
-		else {
-			map.put(number, new ArrayList<>());
-		}
-		putProcessRecord(number);
-	}
-
-	/**
-	 * Moves the specified record from the Process state to the Fixup state
-	 * @param number the number of the record
-	 * @param dataType the type that has been created for this in-progress type
-	 * @throws PdbException if the record is not in the Process state
-	 */
-	void moveProcessToFixupsRecord(int number, DataType dataType) throws PdbException {
-		if (!inProgressRecordStack.remove(number)) {
-			throw new PdbException("Number not in process state: " + number);
-		}
-		if (fixupTypes.containsKey(number)) {
-			throw new PdbException("Number already in progress: " + number);
-		}
-		putFixupsRecord(number);
-		fixupTypes.put(number, dataType);
-	}
-
-	/**
-	 * Removes the next record from the Fixup state and returns the number
-	 * @return the number
-	 */
-	Integer popFixupsRecord() {
-		Integer record = getFixupsRecord();
-		if (record != null) {
-			if (map.containsKey(record)) {
-				map.remove(record);
-			}
-			if (fixupTypes.containsKey(record)) {
-				fixupTypes.remove(record);
-			}
-		}
-		return record;
-	}
-
-	// Not sure we will use this method
-	/**
-	 * Removes the head of the Process state and returns the number.  The number is not moved
-	 *  to the Fixup state
-	 * @return the number
-	 */
-	Integer popProcessRecord() {
-		Integer record = getProcessRecord();
-		if (record != null) {
-			if (map.containsKey(record)) {
-				map.remove(record);
-			}
-			// Since pop from current, not adding to fixups
-		}
-		return record;
-	}
-
-	private void putStagedRecord(int record) throws PdbException {
-		if (stagedRecordFifo.contains(record)) {
-			return;
-		}
-		if (inProgressRecordStack.contains(record)) {
-			throw new PdbException("Record exists in another state: " + record);
-		}
-		if (fixupRecordFifo.contains(record)) {
-			throw new PdbException("Record exists in another state: " + record);
-		}
-		stagedRecordFifo.addFirst(record);
-	}
-
-	private Integer getStagedRecord() {
-		return stagedRecordFifo.pollLast();
-	}
-
-	/**
-	 * Peeks at and returns the record number of the head of the Staged state
-	 * @return the record number
-	 */
-	Integer peekStagedRecord() {
-		return stagedRecordFifo.peekLast();
-	}
-
-	private void putProcessRecord(int record) throws PdbException {
-		if (inProgressRecordStack.contains(record)) {
-			return;
-		}
-		if (stagedRecordFifo.contains(record)) {
-			throw new PdbException("Record exists in another state: " + record);
-		}
-		if (fixupRecordFifo.contains(record)) {
-			throw new PdbException("Record exists in another state: " + record);
-		}
-		inProgressRecordStack.addFirst(record);
-	}
-
-	private Integer getProcessRecord() {
-		return inProgressRecordStack.pollFirst();
-	}
-
-	private void putFixupsRecord(int record) throws PdbException {
-		if (fixupRecordFifo.contains(record)) {
-			return;
-		}
-		if (stagedRecordFifo.contains(record)) {
-			throw new PdbException("Record exists in another state: " + record);
-		}
-		if (inProgressRecordStack.contains(record)) {
-			throw new PdbException("Record exists in another state: " + record);
-		}
-		fixupRecordFifo.addFirst(record);
-	}
-
-	/**
-	 * Peeks at and returns the record number of the head of the Process state
-	 * @return the record number
-	 */
-	Integer peekProcessRecord() {
-		return inProgressRecordStack.peekFirst();
-	}
-
-	/**
-	 * Removes and returns the record number of the head of the Fixup state
-	 * @return the record number
-	 */
-	Integer getFixupsRecord() {
-		return fixupRecordFifo.pollLast();
-	}
-
-	/**
-	 * Peeks at and returns the record number of the head of the Fixup state
-	 * @return the record number
-	 */
-	Integer peekFixupsRecord() {
-		return fixupRecordFifo.peekLast();
-	}
-
-	//==============================================================================================
-
-	/**
-	 * Puts the fixup index into the fixups for the current head of the Process state
-	 * @param fixupIndex the fixup index
-	 * @throws PdbException if the head of the Process state is empty or is fixups cannot be found
-	 */
-	void putFixup(int fixupIndex) throws PdbException {
-		List<Integer> fixups = getProcessFixups();
-		fixups.add(fixupIndex);
-	}
-
-	/**
-	 * Returns true if the fixups for the current head of the Process state is empty
-	 * @return {@code true} if empty
-	 * @throws PdbException if there is no head of the Process state or its fixups cannot be found
-	 */
-	boolean processFixupsIsEmpty() throws PdbException {
-		List<Integer> fixups = getProcessFixups();
-		return fixups.isEmpty();
-	}
-
-	/**
-	 * Peeks at and returns head of the Fixup state
-	 * @return the number of the record
-	 */
-	Integer peekFixupRecord() {
-		return peekFixupsRecord();
-	}
-
-	/**
-	 * Returns the fixups for the head of the Fixups state
-	 * @return the fixup indices
-	 * @throws PdbException if the head of the Fixups state does not exist or its fixups cannot be
-	 *  found
-	 */
-	List<Integer> getFixups() throws PdbException {
-		Integer record = peekFixupsRecord();
-		if (record == null) {
-			throw new PdbException("Empty fixups retrieval");
-		}
-		List<Integer> fixups = map.get(record);
-		if (fixups == null) {
-			throw new PdbException("Fixups not found on retrieval");
-		}
-		return fixups;
-	}
-
-	private List<Integer> getProcessFixups() throws PdbException {
-		Integer record = peekProcessRecord();
-		if (record == null) {
-			throw new PdbException("Context empty on fixups retrieval");
-		}
-		List<Integer> fixups = map.get(record);
-		if (fixups == null) {
-			throw new PdbException("Fixups not found");
-		}
-		return fixups;
-	}
-
-}

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/FunctionSymbolApplier.java

@@ -132,7 +132,7 @@ public class FunctionSymbolApplier extends AbstractBlockContextApplier
 
 		function.setNoReturn(isNonReturning());
 
-		AbstractMsType fType = applicator.getPdb().getTypeRecord(typeRecordNumber);
+		AbstractMsType fType = applicator.getTypeRecord(typeRecordNumber);
 		MsTypeApplier applier = applicator.getTypeApplier(fType);
 		if (!(applier instanceof AbstractFunctionTypeApplier)) {
 			applicator.appendLogMsg("Error: Failed to resolve datatype RecordNumber " +

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/LabelSymbolApplier.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.

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/MemberFunctionTypeApplier.java

@@ -19,7 +19,8 @@ import ghidra.app.util.SymbolPath;
 import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
-import ghidra.program.model.data.*;
+import ghidra.program.model.data.DataType;
+import ghidra.program.model.data.Pointer;
 import ghidra.util.exception.CancelledException;
 
 /**
@@ -30,33 +31,38 @@ public class MemberFunctionTypeApplier extends AbstractFunctionTypeApplier {
 	// Intended for: AbstractMemberFunctionMsType
 	/**
 	 * Constructor for the applicator that applies {@link AbstractMemberFunctionMsType},
-	 * transforming it into a Ghidra {@link DataType}.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
-	 * @throws IllegalArgumentException Upon type mismatch.
+	 * transforming it into a Ghidra {@link DataType}
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
+	 * @throws IllegalArgumentException Upon type mismatch
 	 */
 	public MemberFunctionTypeApplier(DefaultPdbApplicator applicator)
 			throws IllegalArgumentException {
 		super(applicator);
 	}
 
-	private MsTypeApplier getThisPointerApplier(AbstractMemberFunctionMsType procType) {
-		MsTypeApplier applier = applicator.getTypeApplier(procType.getThisPointerRecordNumber());
-		return applier;
-	}
-
 	@Override
 	protected CallingConvention getCallingConvention(AbstractMsType type) {
 		return ((AbstractMemberFunctionMsType) type).getCallingConvention();
 	}
 
 	@Override
-	protected Pointer getThisPointer(AbstractMsType type, FixupContext fixupContext,
-			boolean breakCycle) throws CancelledException, PdbException {
+	protected RecordNumber getThisPointerRecordNumber(AbstractMsType type) {
+		return ((AbstractMemberFunctionMsType) type).getThisPointerRecordNumber();
+	}
+
+	@Override
+	protected RecordNumber getContainingComplexRecordNumber(AbstractMsType type) {
+		return ((AbstractMemberFunctionMsType) type).getContainingClassRecordNumber();
+	}
+
+	@Override
+	protected Pointer getThisPointer(AbstractMsType type)
+			throws CancelledException, PdbException {
 		RecordNumber ptrRecord = ((AbstractMemberFunctionMsType) type).getThisPointerRecordNumber();
 		if (ptrRecord == null) {
 			return null;
 		}
-		AbstractMsType mType = applicator.getPdb().getTypeRecord(ptrRecord);
+		AbstractMsType mType = applicator.getTypeRecord(ptrRecord);
 		if (mType instanceof PrimitiveMsType primitive && primitive.isNoType()) {
 			return null;
 		}
@@ -64,44 +70,28 @@ public class MemberFunctionTypeApplier extends AbstractFunctionTypeApplier {
 			predefineClass(msPtr.getUnderlyingRecordNumber());
 		}
 		applicator.getPdbApplicatorMetrics().witnessMemberFunctionThisPointer(mType);
-		DataType dt = applicator.getProcessedDataType(ptrRecord, fixupContext, breakCycle);
+		DataType dt = applicator.getDataType(ptrRecord);
 		if (dt instanceof Pointer ptr) {
 			return ptr;
 		}
 		return null;
 	}
 
-	@Override
-	protected Composite getContainingComplexApplier(AbstractMsType type, FixupContext fixupContext,
-			boolean breakCycle) throws CancelledException, PdbException {
-		RecordNumber containerRecord =
-			((AbstractMemberFunctionMsType) type).getContainingClassRecordNumber();
-		if (containerRecord == null) {
-			return null;
-		}
-		AbstractMsType mType = applicator.getPdb().getTypeRecord(containerRecord);
-		applicator.getPdbApplicatorMetrics().witnessMemberFunctionContainingType(mType);
-		DataType dt = applicator.getProcessedDataType(containerRecord, fixupContext, breakCycle);
-		if (dt instanceof Composite composite) {
-			return composite;
-		}
-		return null;
-	}
-
 	@Override
 	protected void processContainingType(AbstractMsType type) {
+		// TODO: evaluate whether we need to schedule this container type... guessing not
 		RecordNumber containerRecord =
 			((AbstractMemberFunctionMsType) type).getContainingClassRecordNumber();
 		if (containerRecord == null) {
 			return;
 		}
 		predefineClass(containerRecord);
-		AbstractMsType mType = applicator.getPdb().getTypeRecord(containerRecord);
+		AbstractMsType mType = applicator.getTypeRecord(containerRecord);
 		applicator.getPdbApplicatorMetrics().witnessMemberFunctionContainingType(mType);
 	}
 
 	private void predefineClass(RecordNumber recordNumber) {
-		AbstractMsType type = applicator.getPdb().getTypeRecord(recordNumber);
+		AbstractMsType type = applicator.getTypeRecord(recordNumber);
 		if (!(type instanceof AbstractCompositeMsType msComposite)) {
 			return;
 		}

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/MemberTypeApplier.java

@@ -15,30 +15,20 @@
  */
 package ghidra.app.util.pdb.pdbapplicator;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractMemberMsType;
-import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractMsType;
-import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
 
 /**
  * Applier for {@link AbstractMemberMsType} types.
  */
-public class MemberTypeApplier extends MsTypeApplier {
+public class MemberTypeApplier extends MsDataTypeComponentApplier {
 
 	// Intended for: AbstractMemberMsType
 	/**
-	 * Constructor for member type applier.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Constructor for member type applier
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public MemberTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
 	}
 
-	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		// do nothing
-		return null;
-	}
 }

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/ModifierTypeApplier.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.
@@ -25,39 +25,30 @@ import ghidra.util.exception.CancelledException;
 /**
  * Applier for {@link AbstractModifierMsType} types.
  */
-public class ModifierTypeApplier extends MsTypeApplier {
+public class ModifierTypeApplier extends MsDataTypeApplier {
 
 	// Intended for: AbstractModifierMsType
 	/**
-	 * Constructor for modifier type applier.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Constructor for modifier type applier
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public ModifierTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
 	}
 
-	RecordNumber getUnderlyingNonModifierRecordNumber(RecordNumber underlyingRecord) {
-		return getUnderlyingNonModifierRecordNumber(applicator, underlyingRecord);
-	}
-
-	static RecordNumber getUnderlyingNonModifierRecordNumber(DefaultPdbApplicator applicator,
-			RecordNumber underlyingRecord) {
-		AbstractMsType underlyingType = applicator.getPdb().getTypeRecord(underlyingRecord);
-		while (underlyingType instanceof AbstractModifierMsType modifierType) {
-			RecordNumber modifiedRecord = modifierType.getModifiedRecordNumber();
-			underlyingType = applicator.getPdb().getTypeRecord(modifiedRecord);
-		}
-		return underlyingType.getRecordNumber();
-	}
-
 	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		AbstractModifierMsType modifierType = (AbstractModifierMsType) type;
-		RecordNumber modifiedRecord = modifierType.getModifiedRecordNumber();
+	boolean apply(AbstractMsType type) throws PdbException, CancelledException {
 
-		DataType modifiedType =
-			applicator.getProcessedDataType(modifiedRecord, fixupContext, false);
+		AbstractModifierMsType modifierMsType = (AbstractModifierMsType) type;
+		// Doing pre-check on type first using the getDataTypeOrSchedule method.  The logic is
+		//  simpler here for Composites or Functions because we only have one dependency type,
+		//  so we are not doing a separate call to a pre-check method as there is in those appliers.
+		//  If type is not available, return false.
+		RecordNumber modifiedRecordNumber = modifierMsType.getModifiedRecordNumber();
+		DataType modifiedType = applicator.getDataTypeOrSchedule(modifiedRecordNumber);
+		if (modifiedType == null) {
+			return false;
+		}
 
 		// If Ghidra eventually has a modified type (const, volatile) in its model, then we can
 		//  perform the applicator.getDataType(modifierType) here, and the
@@ -75,11 +66,14 @@ public class ModifierTypeApplier extends MsTypeApplier {
 		//  the underlying type of a Modifier to be a pointer.  However, MSFT primitives include
 		//  pointers to primitives, so in these cases we could see a const pointer to primitive
 		//  where the const comes from the Modifier type.
+		DataType modifierType = modifiedType;
 
-//		if (modifiedType != null && !applicator.isPlaceholderType(modifiedType)) {
-		if (modifiedType != null) {
-			applicator.putDataType(modifierType, modifiedType);
-		}
-		return modifiedType;
+		// Store modified type as modifier type
+		applicator.putDataType(modifierMsType, modifierType);
+		// I'm hesitant to schedule resolve... what if I'm a pointer.  Should I resolve
+		//  modified pointers, modified other types, both, or neither?  TODO; investigate
+
+		return true;
 	}
+
 }

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/MsDataTypeApplier.java

@@ -0,0 +1,84 @@
+/* ###
+ * 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 ghidra.app.util.pdb.pdbapplicator;
+
+import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
+import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractMsType;
+import ghidra.util.exception.CancelledException;
+
+/**
+ * Abstract class representing the applier for a specific PDB_ID type, distinguished as
+ *  representing an actual data type... not a component of a data type for which there is
+ *  no associated type.
+ */
+public abstract class MsDataTypeApplier extends MsTypeApplier {
+
+	/**
+	 * Constructor.
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 */
+	public MsDataTypeApplier(DefaultPdbApplicator applicator) {
+		super(applicator);
+	}
+
+	/**
+	 * Apply the {@link AbstractMsType} in an attempt to create a Ghidra type
+	 * @param type the PDB type to work on
+	 * @return the {@code true} if type is done and can be removed from the {@code todoStack}
+	 * @throws PdbException if there was a problem processing the data.
+	 * @throws CancelledException upon user cancellation
+	 */
+	abstract boolean apply(AbstractMsType type) throws PdbException, CancelledException;
+
+	/**
+	 * Returns the (long) size of the type or 0 if unknown. Or Long.MAX_VALUE if too large.
+	 * @param type the PDB type being inspected
+	 * @return the size; zero if unknown.
+	 */
+	long getSizeLong(AbstractMsType type) {
+		return applicator.bigIntegerToLong(type.getSize());
+	}
+
+	/**
+	 * Returns the (int) size of the type or 0 if unknown. Or Integer.MAX_VALUE if too large.
+	 * @param type the PDB type being inspected
+	 * @return the size; zero if unknown.
+	 */
+	int getSizeInt(AbstractMsType type) {
+		return applicator.bigIntegerToInt(type.getSize());
+	}
+
+	//==============================================================================================
+	// TODO: Need to investigate if we adopt the following... if so, should use them consistently.
+
+//	/**
+//	 * Convenience method for getting the {@link DataType} from the applicator pertaining
+//	 * to this PDB type
+//	 * @param type the PDB type
+//	 * @return the ghidra data type
+//	 */
+//	DataType getDataType(AbstractMsType type) {
+//		return applicator.getDataType(type);
+//	}
+//
+//	protected int getIndex(AbstractMsType type) {
+//		RecordNumber recordNumber = type.getRecordNumber();
+//		if (recordNumber != null) {
+//			return recordNumber.getNumber();
+//		}
+//		return -1;
+//	}
+}

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/MsDataTypeComponentApplier.java

@@ -0,0 +1,32 @@
+/* ###
+ * 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 ghidra.app.util.pdb.pdbapplicator;
+
+/**
+ * Abstract class representing the applier for a specific PDB_ID type, distinguished as having
+ *  components for an actual data type but not representing a data type in and of itself.
+ */
+public abstract class MsDataTypeComponentApplier extends MsTypeApplier {
+
+	/**
+	 * Constructor.
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 */
+	public MsDataTypeComponentApplier(DefaultPdbApplicator applicator) {
+		super(applicator);
+	}
+
+}

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/MsTypeApplier.java

@@ -15,11 +15,9 @@
  */
 package ghidra.app.util.pdb.pdbapplicator;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.PdbLog;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractMsType;
 import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
 
 /**
  * Abstract class representing the applier for a specific PDB_ID type.  The
@@ -54,54 +52,4 @@ public abstract class MsTypeApplier {
 		applicator.pdbLogAndInfoMessage(originator, message);
 	}
 
-	/**
-	 * Apply the {@link AbstractMsType} in an attempt to create a Ghidra type.
-	 * @param type the PDB type to work on
-	 * @param fixupContext the fixup context to use; or pass in null during fixup process
-	 * @param breakCycle TODO
-	 * @return the resultant DataType
-	 * @throws PdbException if there was a problem processing the data.
-	 * @throws CancelledException upon user cancellation
-	 */
-	abstract DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException;
-
-	/**
-	 * Returns the (long) size of the type or 0 if unknown. Or Long.MAX_VALUE if too large.
-	 * @param type the PDB type being inspected
-	 * @return the size; zero if unknown.
-	 */
-	long getSizeLong(AbstractMsType type) {
-		return applicator.bigIntegerToLong(type.getSize());
-	}
-
-	/**
-	 * Returns the (int) size of the type or 0 if unknown. Or Integer.MAX_VALUE if too large.
-	 * @param type the PDB type being inspected
-	 * @return the size; zero if unknown.
-	 */
-	int getSizeInt(AbstractMsType type) {
-		return applicator.bigIntegerToInt(type.getSize());
-	}
-
-	//==============================================================================================
-	// TODO: Need to investigate if we adopt the following... if so, should use them consistently.
-
-//	/**
-//	 * Convenience method for getting the {@link DataType} from the applicator pertaining
-//	 * to this PDB type
-//	 * @param type the PDB type
-//	 * @return the ghidra data type
-//	 */
-//	DataType getDataType(AbstractMsType type) {
-//		return applicator.getDataType(type);
-//	}
-//
-//	protected int getIndex(AbstractMsType type) {
-//		RecordNumber recordNumber = type.getRecordNumber();
-//		if (recordNumber != null) {
-//			return recordNumber.getNumber();
-//		}
-//		return -1;
-//	}
 }

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/MultiphaseDataTypeResolver.java

@@ -0,0 +1,254 @@
+/* ###
+ * 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 ghidra.app.util.pdb.pdbapplicator;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import ghidra.app.util.bin.format.pdb2.pdbreader.*;
+import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractMsType;
+import ghidra.program.model.data.*;
+import ghidra.util.exception.AssertException;
+import ghidra.util.exception.CancelledException;
+import ghidra.util.task.TaskMonitor;
+
+/**
+ * Performs appropriated multiple passes on data types to get theme filled in and resolved
+ */
+public class MultiphaseDataTypeResolver {
+
+	private DefaultPdbApplicator applicator;
+	private AbstractPdb pdb;
+	private TaskMonitor monitor;
+
+	private RecordStack todoStack;
+	private RecordStack resolveStack;
+
+	public MultiphaseDataTypeResolver(DefaultPdbApplicator applicator) {
+		this.applicator = applicator;
+		this.pdb = applicator.getPdb();
+		this.monitor = applicator.getMonitor();
+		todoStack = new RecordStack();
+		resolveStack = new RecordStack();
+	}
+
+	/**
+	 * Processes the data type associated with the record number and all dependencies of that
+	 *  type.  Deals with cyclic dependencies and ultimately stores resolved (in most cases)
+	 *  types in the DefaultPdbApplicator types map
+	 * @param recordNumber the record number
+	 * @throws PdbException upon processing error
+	 * @throws CancelledException upon user cancellation
+	 */
+	void process(RecordNumber recordNumber) throws PdbException, CancelledException {
+
+		// If found in the applicator map then the type is completed.
+		if (applicator.getDataType(recordNumber) != null) {
+			return;
+		}
+		// If not in the map, it will also not be in the todo or resolve stacks, as both
+		//  should be empty at this point.
+		scheduleTodo(recordNumber);
+
+		RecordNumber recordToProcess;
+		// Peek at top of stack.  If can be removed, it will be; otherwise other records can be
+		//  pushed on top of this one for next loop cycle.
+		while ((recordToProcess = todoStack.peek()) != null) {
+			monitor.checkCancelled();
+			MsDataTypeApplier dataTypeApplier =
+				(MsDataTypeApplier) applicator.getTypeApplier(recordToProcess);
+			AbstractMsType msType = pdb.getTypeRecord(recordToProcess);
+			// If processing is done, then pop from todoStack and put onto resolveStack.
+			//  If not completed, the do not remove from todoStack.
+			if (dataTypeApplier.apply(msType)) {
+				if (todoStack.peek() != recordToProcess) {
+					throw new AssertException("Top of stack violation");
+				}
+				todoStack.pop();
+				resolveStack.push(recordToProcess);
+			}
+		}
+
+		// Pop top of stack and work on it.
+		while ((recordToProcess = resolveStack.pop()) != null) {
+			monitor.checkCancelled();
+			DataType dataType = applicator.getDataType(recordToProcess);
+			// Resolve and re-store most data types
+			if (!(dataType instanceof PointerDataType || dataType instanceof BitFieldDataType)) {
+				dataType = applicator.resolve(dataType);
+				applicator.putDataType(recordToProcess, dataType);
+			}
+		}
+	}
+
+	/**
+	 * Method used to schedule another type (indicated by the record number).  This scheduled
+	 *  type is put on top of a stack of types to process, pushing what was the current type
+	 *  being processed down.  If the type indicated by the record number is already on the stack,
+	 *  it is lifted to the top of the stack.  Note that composite types (by virtue of the fact
+	 *  that impls for these are created and stored in the applicator map, but not filled in) will
+	 *  not be lifted to the top of the stack.  This prevents oscillation on the stack and also
+	 *  is the mechanism by which dependency cycles are broken
+	 * @param recordNumber the record number to be scheduled
+	 */
+	void scheduleTodo(RecordNumber recordNumber) {
+		MsTypeApplier applier = applicator.getTypeApplier(recordNumber);
+		if (!(applier instanceof MsDataTypeApplier dataTypeApplier)) {
+			// Return without scheduling... only want to schedule that that have a legitimate
+			//  data type to store
+			return;
+		}
+		todoStack.push(recordNumber);
+	}
+
+	/**
+	 * Stack of record numbers with O(1) push/pop, O(1) contains, O(1) removal from
+	 *  anywhere, and thus O(1) move from anywhere to top.  These nodes hold the RecordNumbers
+	 *  that are being scheduled
+	 */
+	static class RecordStack {
+
+		static class RecordNode {
+			RecordNode next;
+			RecordNode prev;
+			RecordNumber recordNumber;
+
+			/**
+			 * Create new node for the record number.  Note that the {@code next} and {@code prev}
+			 *  values are not set.  They must be set by the RecordStack.
+			 * @param recordNumber the record number
+			 */
+			private RecordNode(RecordNumber recordNumber) {
+				this.recordNumber = recordNumber;
+			}
+		}
+
+		static final RecordNumber HEAD = RecordNumber.typeRecordNumber(-1);
+		static final RecordNumber TAIL = RecordNumber.typeRecordNumber(-2);
+		Map<RecordNumber, RecordNode> map;
+		RecordNode head;
+		RecordNode tail;
+
+		/**
+		 * Constructor for new record stack
+		 */
+		RecordStack() {
+			// head and tail are not put into the map
+			map = new HashMap<>();
+			head = new RecordNode(HEAD);
+			tail = new RecordNode(TAIL);
+			head.next = null;
+			head.prev = tail;
+			tail.next = head;
+			tail.prev = null;
+		}
+
+		/**
+		 * Indicates if number number exists on stack
+		 * @param recordNumber the record number to check
+		 * @return {@code true} if exists
+		 */
+		boolean contains(RecordNumber recordNumber) {
+			return map.containsKey(recordNumber);
+		}
+
+		/**
+		 * Pushes the record number onto the top of the stack.  If the record number was already
+		 *  on the stack, it is moved to the top
+		 * @param recordNumber the record number to push
+		 */
+		void push(RecordNumber recordNumber) {
+			RecordNode node = getNode(recordNumber);
+			if (node == head.prev) {
+				return; // already on top of stack
+			}
+			if (node == null) {
+				node = new RecordNode(recordNumber);
+				map.put(recordNumber, node);
+			}
+			else { // already exists in non-top-of-stack position
+				removeNodeLinkage(node);
+			}
+			insertNodeLinkage(head, node);
+		}
+
+		/**
+		 * Peek at top node
+		 * @return the node's record number or {@code null} if if no nodes left
+		 */
+		RecordNumber peek() {
+			RecordNode node = getTop();
+			if (node == tail) {
+				return null;
+			}
+			return node.recordNumber;
+		}
+
+		/**
+		 * Pop top node
+		 * @return the popped node's record number or {@code null} if if no nodes left
+		 */
+		RecordNumber pop() {
+			RecordNode node = getTop();
+			if (node == tail) {
+				return null;
+			}
+			removeNodeLinkage(node);
+			map.remove(node.recordNumber);
+			return node.recordNumber;
+		}
+
+		/**
+		 * Get node for the record number
+		 * @return the node
+		 */
+		private RecordNode getNode(RecordNumber recordNumber) {
+			return map.get(recordNumber);
+		}
+
+		/**
+		 * Get top node
+		 * @return the node
+		 */
+		private RecordNode getTop() {
+			return head.prev;
+		}
+
+		/**
+		 * Add node to the stack.  Gets placed below locationNode, which can be head for pushing
+		 * onto the stack
+		 */
+		private void insertNodeLinkage(RecordNode locationNode, RecordNode newNode) {
+			newNode.next = locationNode;
+			newNode.prev = locationNode.prev;
+			locationNode.prev.next = newNode;
+			locationNode.prev = newNode;
+		}
+
+		/**
+		 * Remove node from bidirectional linkage
+		 * @param node the node to remove; must not be {@code head}, {@code tail}, or {@code null}
+		 */
+		private void removeNodeLinkage(RecordNode node) {
+			node.prev.next = node.next;
+			node.next.prev = node.prev;
+			node.prev = null;
+			node.next = null;
+		}
+
+	}
+
+}

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/NestedTypeApplier.java

@@ -15,16 +15,12 @@
  */
 package ghidra.app.util.pdb.pdbapplicator;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
-import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
-import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
 
 /**
  * Applier for {@link AbstractNestedTypeMsType} and {@link AbstractNestedTypeExtMsType} types.
  */
-public class NestedTypeApplier extends MsTypeApplier {
+public class NestedTypeApplier extends MsDataTypeComponentApplier {
 
 	// Intended for: AbstractNestedTypeMsType or AbstractNestedTypeExtMsType
 	/**
@@ -53,25 +49,6 @@ public class NestedTypeApplier extends MsTypeApplier {
 		return "";
 	}
 
-	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		RecordNumber typeRecordNumber;
-		if (type instanceof AbstractNestedTypeMsType nestedType) {
-			typeRecordNumber = nestedType.getNestedTypeDefinitionRecordNumber();
-		}
-		else if (type instanceof AbstractNestedTypeExtMsType extNestedType) {
-			typeRecordNumber = extNestedType.getNestedTypeDefinitionRecordNumber();
-		}
-		else {
-			throw new PdbException(
-				"Unexpected nested type in field list: " + type.getClass().getSimpleName());
-		}
-		AbstractMsType mType = applicator.getPdb().getTypeRecord(typeRecordNumber);
-		MsTypeApplier applier = applicator.getTypeApplier(typeRecordNumber);
-		return applier.apply(mType, fixupContext, breakCycle);
-	}
-
 	private static AbstractMsType validateType(AbstractMsType type)
 			throws IllegalArgumentException {
 		if (!(type instanceof AbstractNestedTypeMsType) &&
@@ -81,4 +58,5 @@ public class NestedTypeApplier extends MsTypeApplier {
 		}
 		return type;
 	}
+
 }

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/NoTypeApplier.java

@@ -15,11 +15,6 @@
  */
 package ghidra.app.util.pdb.pdbapplicator;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
-import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractMsType;
-import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
-
 /**
  * Used for creating a wrapper for when there is not associated type to the PDB type (or if we
  * have not yet created the association).
@@ -37,10 +32,4 @@ public class NoTypeApplier extends MsTypeApplier {
 		super(applicator);
 	}
 
-	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		// do nothing
-		return null;
-	}
 }

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/PdbResearch.java

@@ -378,10 +378,12 @@ public class PdbResearch {
 		for (int indexNumber : developerDebugOrderIndexNumbers) {
 			monitor.checkCancelled();
 			PdbResearch.checkBreak(indexNumber);
-			FixupContext fixupContext = new FixupContext();
-			fixupContext.addStagedRecord(indexNumber);
-			applicator.getProcessedDataType(RecordNumber.typeRecordNumber(indexNumber),
-				fixupContext, true);
+			//20240214: neutered internals... containing method not being used at the moment...
+			// consider what needs to be done below
+//			FixupContext fixupContext = new FixupContext();
+//			fixupContext.addStagedRecord(indexNumber);
+//			applicator.getProcessedDataType(RecordNumber.typeRecordNumber(indexNumber),
+//				fixupContext, true);
 		}
 
 	}
@@ -426,7 +428,7 @@ public class PdbResearch {
 		MsSymbolApplier applier = applicator.getSymbolApplier(iter);
 		if (applier instanceof TypedefSymbolApplier typedefApplier) {
 			RecordNumber typeNumber = typedefApplier.getTypeRecordNumber();
-			AbstractMsType type = applicator.getPdb().getTypeRecord(typeNumber);
+			AbstractMsType type = applicator.getTypeRecord(typeNumber);
 			System.out
 					.println(
 						"UDT " + typedefApplier.getName() + " depends on " + type.toString());

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/PointerTypeApplier.java

@@ -21,22 +21,21 @@ import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractPointerMsType.MsPointerMode;
 import ghidra.program.model.data.*;
+import ghidra.util.Msg;
 import ghidra.util.exception.CancelledException;
 
 /**
  * Applier for {@link AbstractPointerMsType} types.
  */
-public class PointerTypeApplier extends MsTypeApplier {
+public class PointerTypeApplier extends MsDataTypeApplier {
 
 	// Intended for: AbstractPointerMsType
 	/**
-	 * Constructor for pointer type applier, for transforming a enum into a
-	 * Ghidra DataType.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
-	 * @throws IllegalArgumentException Upon invalid arguments.
+	 * Constructor for pointer type applier, for transforming a enum into a Ghidra DataType
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
+	 * @throws IllegalArgumentException Upon invalid arguments
 	 */
-	public PointerTypeApplier(DefaultPdbApplicator applicator)
-			throws IllegalArgumentException {
+	public PointerTypeApplier(DefaultPdbApplicator applicator) throws IllegalArgumentException {
 		super(applicator);
 	}
 
@@ -45,15 +44,14 @@ public class PointerTypeApplier extends MsTypeApplier {
 	 *  if we develop member pointers into the Ghidra framework; this method exists to pass some
 	 *  pertinent information along to the user
 	 * @param type the PDB type being inspected
-	 * @param fixupContext the fixup context to use; or pass in null during fixup process
 	 * @return comment string or null
 	 * @throws CancelledException upon user cancellation
 	 * @throws PdbException upon processing error
 	 */
-	String getPointerCommentField(AbstractPointerMsType type, FixupContext fixupContext)
+	String getPointerCommentField(AbstractPointerMsType type)
 			throws CancelledException, PdbException {
-		AbstractPointerMsType.MsPointerMode pointerMode = type.getPointerMode();
-		if (pointerMode == AbstractPointerMsType.MsPointerMode.MEMBER_FUNCTION_POINTER) {
+		AbstractPointerMsType.MsPointerMode msPointerMode = type.getPointerMode();
+		if (msPointerMode == AbstractPointerMsType.MsPointerMode.MEMBER_FUNCTION_POINTER) {
 			// We are no longer able to get underlying type in time due to cycle breaks unless
 			// we start doing fixups on pmf/pdm pointers.
 			// TODO: consider fixups on these later... maybe after we understand contents of
@@ -63,7 +61,7 @@ public class PointerTypeApplier extends MsTypeApplier {
 			//return "\"::*\" (pmf) to type: " + underlyingType;
 			return "\"::*\" (pmf)";
 		}
-		else if (pointerMode == AbstractPointerMsType.MsPointerMode.MEMBER_DATA_POINTER) {
+		else if (msPointerMode == AbstractPointerMsType.MsPointerMode.MEMBER_DATA_POINTER) {
 			// We are no longer able to get underlying type in time due to cycle breaks unless
 			// we start doing fixups on pmf/pdm pointers.
 			// TODO: consider fixups on these later... maybe after we understand contents of
@@ -77,56 +75,57 @@ public class PointerTypeApplier extends MsTypeApplier {
 	}
 
 	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
+	boolean apply(AbstractMsType type) throws PdbException, CancelledException {
+
+		AbstractPointerMsType pointerMsType = (AbstractPointerMsType) type;
+		// Doing pre-check on type first using the getDataTypeOrSchedule method.  The logic is
+		//  simpler here for Composites or Functions because we only have one dependency type,
+		//  so we are not doing a separate call to a pre-check method as there is in those appliers.
+		//  If type is not available, return false.
+		RecordNumber underlyingRecordNumber = pointerMsType.getUnderlyingRecordNumber();
+		DataType underlyingType = applicator.getDataTypeOrSchedule(underlyingRecordNumber);
+		if (underlyingType == null) {
+			return false;
+		}
 
 		DataType dataType;
-		if (fixupContext != null) {
-			// The next line will only return null until we start putting in a DB version of the
-			//  pointer, below.  Need to work that out.  TODO: take care of this
-			dataType = applicator.getDataType(type);
-			if (dataType != null) {
-				return dataType;
-			}
-		}
+
 		if (type instanceof DummyMsType) {
 			dataType = new PointerDataType(applicator.getDataTypeManager());
 		}
 		else {
-			dataType = applyAbstractPointerMsType((AbstractPointerMsType) type, fixupContext);
+			AbstractPointerMsType.MsPointerMode msPointerMode = pointerMsType.getPointerMode();
+			switch (msPointerMode) {
+				case POINTER:
+					dataType = processPointer(pointerMsType, underlyingType);
+				case LVALUE_REFERENCE:
+					dataType = processReference(pointerMsType, underlyingType);
+				case RVALUE_REFERENCE:
+					dataType = processReference(pointerMsType, underlyingType);
+				case MEMBER_DATA_POINTER:
+				case MEMBER_FUNCTION_POINTER:
+					dataType = processMemberPointer(pointerMsType, underlyingType);
+				case INVALID:
+				case RESERVED:
+					Msg.warn(this, "Unable to process PointerMode: " + msPointerMode +
+						". Using default Pointer.");
+					dataType = PointerDataType.dataType;
+				default:
+					throw new PdbException("PDB Error: unhandled PointerMode in " + getClass());
+			}
 		}
-		dataType = applicator.resolve(dataType);
+
 		applicator.putDataType(type, dataType);
-		return dataType;
+		return true;
 	}
 
-	private DataType getUnderlyingType(AbstractPointerMsType type, FixupContext fixupContext)
-			throws CancelledException, PdbException {
-		RecordNumber underlyingRecord = type.getUnderlyingRecordNumber();
-		return applicator.getProcessedDataType(underlyingRecord, fixupContext, true);
-	}
+	private DataType processMemberPointer(AbstractPointerMsType type, DataType underlyingType) {
 
-	private DataType applyAbstractPointerMsType(AbstractPointerMsType type,
-			FixupContext fixupContext) throws CancelledException, PdbException {
-
-		AbstractPointerMsType.MsPointerMode pointerMode = type.getPointerMode();
-		if (pointerMode == AbstractPointerMsType.MsPointerMode.MEMBER_DATA_POINTER ||
-			pointerMode == AbstractPointerMsType.MsPointerMode.MEMBER_FUNCTION_POINTER) {
-			return processMemberPointer(type, fixupContext);
-		}
-		return processPointer(type, fixupContext);
-	}
-
-	private DataType processMemberPointer(AbstractPointerMsType type, FixupContext fixupContext)
-			throws CancelledException, PdbException {
-
-		// future use
-		DataType underlyingType = getUnderlyingType(type, fixupContext);
 		int size = type.getSize().intValueExact();
 
 		String name;
-		AbstractPointerMsType.MsPointerMode pointerMode = type.getPointerMode();
-		if (pointerMode == AbstractPointerMsType.MsPointerMode.MEMBER_FUNCTION_POINTER) {
+		AbstractPointerMsType.MsPointerMode msPointerMode = type.getPointerMode();
+		if (msPointerMode == AbstractPointerMsType.MsPointerMode.MEMBER_FUNCTION_POINTER) {
 			name = String.format("pmf_%08x", type.toString().hashCode());
 		}
 		else {
@@ -139,12 +138,11 @@ public class PointerTypeApplier extends MsTypeApplier {
 		DataType dt = new StructureDataType(storagePath, name, size);
 		dt.setDescription(type.toString());
 
-		return applicator.resolve(dt);
+		return dt;
 	}
 
 	private CategoryPath getCategoryPathForMemberPointer(RecordNumber containingClassRecordNumber) {
-		AbstractMsType containingType =
-			applicator.getPdb().getTypeRecord(containingClassRecordNumber);
+		AbstractMsType containingType = applicator.getTypeRecord(containingClassRecordNumber);
 		MsTypeApplier applier = applicator.getTypeApplier(containingClassRecordNumber);
 		if (containingType instanceof AbstractCompositeMsType compositeMsType &&
 			applier instanceof CompositeTypeApplier compositeApplier) {
@@ -155,9 +153,7 @@ public class PointerTypeApplier extends MsTypeApplier {
 		return applicator.getAnonymousTypesCategory();
 	}
 
-	private DataType processPointer(AbstractPointerMsType type, FixupContext fixupContext)
-			throws CancelledException, PdbException {
-		DataType underlyingType = getUnderlyingType(type, fixupContext);
+	private DataType processPointer(AbstractPointerMsType type, DataType underlyingType) {
 		int size = type.getSize().intValueExact();
 		if (size > PointerDataType.MAX_POINTER_SIZE_BYTES) {
 			return getStubPointer(type);
@@ -165,21 +161,28 @@ public class PointerTypeApplier extends MsTypeApplier {
 		if (size == applicator.getDataOrganization().getPointerSize()) {
 			size = -1; // Use default
 		}
-		if (underlyingType == null || applicator.isPlaceholderType(underlyingType)) {
-			return applicator.getPlaceholderPointer(size);
+		return new PointerDataType(underlyingType, size, applicator.getDataTypeManager());
+	}
+
+	private DataType processReference(AbstractPointerMsType type, DataType underlyingType) {
+		int size = type.getSize().intValueExact();
+		if (size > PointerDataType.MAX_POINTER_SIZE_BYTES) {
+			return getStubPointer(type);
+		}
+		if (size == applicator.getDataOrganization().getPointerSize()) {
+			size = -1; // Use default
 		}
 		return new PointerDataType(underlyingType, size, applicator.getDataTypeManager());
 	}
 
 	private DataType getStubPointer(AbstractPointerMsType type) {
 		int size = type.getSize().intValueExact();
-		AbstractMsType under = applicator.getPdb().getTypeRecord(type.getUnderlyingRecordNumber());
+		AbstractMsType under = applicator.getTypeRecord(type.getUnderlyingRecordNumber());
 		CategoryPath categoryPath = applicator.getAnonymousTypesCategory();
-		MsPointerMode mode = type.getPointerMode();
+		MsPointerMode msPointerMode = type.getPointerMode();
 		AbstractPointerMsType.PointerType pt = type.getPointerType();
-		String name =
-			String.format("StubPtr%d_%s%s_To_%s", 8 * size, pt.toString(), mode.toString(),
-				under.getName());
+		String name = String.format("StubPtr%d_%s%s_To_%s", 8 * size, pt.toString(),
+			msPointerMode.toString(), under.getName());
 		DataType stubPtr = new StructureDataType(categoryPath, name, size);
 		return stubPtr;
 	}

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/PrimitiveTypeApplier.java

@@ -16,6 +16,7 @@
 package ghidra.app.util.pdb.pdbapplicator;
 
 import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
+import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.AbstractMsType;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.PrimitiveMsType;
 import ghidra.program.model.data.DataType;
@@ -24,22 +25,20 @@ import ghidra.util.exception.CancelledException;
 /**
  * Applier for {@link PrimitiveMsType} types.
  */
-public class PrimitiveTypeApplier extends MsTypeApplier {
+public class PrimitiveTypeApplier extends MsDataTypeApplier {
 
 	// Intended for: PrimitiveMsType
 	/**
-	 * Constructor for primitive type applier, for transforming a primitive into a
-	 * Ghidra DataType.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Constructor for primitive type applier, for transforming a primitive into a Ghidra DataType
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public PrimitiveTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
 	}
 
 	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		return applyPrimitiveMsType((PrimitiveMsType) type);
+	boolean apply(AbstractMsType type) throws PdbException, CancelledException {
+		return (applyPrimitiveMsType((PrimitiveMsType) type) != null);
 	}
 
 	boolean isNoType(AbstractMsType type) {
@@ -59,7 +58,9 @@ public class PrimitiveTypeApplier extends MsTypeApplier {
 //		}
 
 		int indexNumber = type.getNumber();
-		DataType existingDt = applicator.getDataType(indexNumber);
+		RecordNumber recordNumber = RecordNumber.typeRecordNumber(indexNumber);
+		DataType existingDt = applicator.getDataType(recordNumber);
+
 		if (existingDt != null) {
 			return existingDt;
 		}
@@ -2062,8 +2063,11 @@ public class PrimitiveTypeApplier extends MsTypeApplier {
 
 		}
 
+		// Doing a direct and immediate resolve (not scheduling... the type would never get into
+		//  the processing queue because primitive type numbers are not found in the sequential
+		//  set of record numbers, but they are referred to by non-primitive types).
 		primitiveDataType = applicator.resolve(primitiveDataType);
-		applicator.putDataType(indexNumber, primitiveDataType);
+		applicator.putDataType(recordNumber, primitiveDataType);
 
 		return primitiveDataType;
 	}

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/ProcedureTypeApplier.java

@@ -18,7 +18,8 @@ package ghidra.app.util.pdb.pdbapplicator;
 import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
-import ghidra.program.model.data.*;
+import ghidra.program.model.data.DataType;
+import ghidra.program.model.data.Pointer;
 import ghidra.util.exception.CancelledException;
 
 /**
@@ -29,9 +30,9 @@ public class ProcedureTypeApplier extends AbstractFunctionTypeApplier {
 	// Intended for: AbstractProcedureMsType
 	/**
 	 * Constructor for the applicator that applies {@link AbstractProcedureMsType},
-	 * transforming it into a Ghidra {@link DataType}.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
-	 * @throws IllegalArgumentException Upon invalid arguments.
+	 * transforming it into a Ghidra {@link DataType}
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
+	 * @throws IllegalArgumentException Upon invalid arguments
 	 */
 	public ProcedureTypeApplier(DefaultPdbApplicator applicator) throws IllegalArgumentException {
 		super(applicator);
@@ -43,14 +44,17 @@ public class ProcedureTypeApplier extends AbstractFunctionTypeApplier {
 	}
 
 	@Override
-	protected Pointer getThisPointer(AbstractMsType type, FixupContext fixupContext,
-			boolean breakCycle) throws CancelledException, PdbException {
+	protected RecordNumber getThisPointerRecordNumber(AbstractMsType type) {
 		return null;
 	}
 
 	@Override
-	protected Composite getContainingComplexApplier(AbstractMsType type, FixupContext fixupContext,
-			boolean breakCycle) throws CancelledException, PdbException {
+	protected RecordNumber getContainingComplexRecordNumber(AbstractMsType type) {
+		return null;
+	}
+
+	@Override
+	protected Pointer getThisPointer(AbstractMsType type) throws CancelledException, PdbException {
 		return null;
 	}
 

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/PublicSymbolApplier.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.

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/TypeApplierFactory.java

@@ -18,8 +18,7 @@ package ghidra.app.util.pdb.pdbapplicator;
 import java.util.HashMap;
 import java.util.Map;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
-import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
+import ghidra.app.util.bin.format.pdb2.pdbreader.*;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
 
 /**
@@ -30,10 +29,12 @@ import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
 public class TypeApplierFactory {
 
 	private DefaultPdbApplicator applicator;
+	private AbstractPdb pdb;
 	private Map<Integer, MsTypeApplier> appliersByPdbId;
 
 	TypeApplierFactory(DefaultPdbApplicator applicator) {
 		this.applicator = applicator;
+		this.pdb = applicator.getPdb();
 		appliersByPdbId = new HashMap<>();
 	}
 
@@ -51,7 +52,7 @@ public class TypeApplierFactory {
 	MsTypeApplier getApplierOrNoTypeSpec(RecordNumber recordNumber,
 			Class<? extends MsTypeApplier> expected) throws PdbException {
 		MsTypeApplier applier = getTypeApplier(recordNumber);
-		AbstractMsType type = applicator.getPdb().getTypeRecord(recordNumber);
+		AbstractMsType type = pdb.getTypeRecord(recordNumber);
 		if (!expected.isInstance(applier)) {
 			if (!(applier instanceof PrimitiveTypeApplier &&
 				((PrimitiveTypeApplier) applier).isNoType(type))) {
@@ -63,7 +64,7 @@ public class TypeApplierFactory {
 	}
 
 	MsTypeApplier getTypeApplier(RecordNumber recordNumber) {
-		return getTypeApplier(applicator.getPdb().getTypeRecord(recordNumber));
+		return getTypeApplier(pdb.getTypeRecord(recordNumber));
 	}
 
 	//==============================================================================================

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/TypedefSymbolApplier.java

@@ -91,7 +91,7 @@ public class TypedefSymbolApplier extends MsSymbolApplier
 		String name = symbol.getName();
 
 		RecordNumber typeRecordNumber = symbol.getTypeRecordNumber();
-		AbstractMsType mType = applicator.getPdb().getTypeRecord(typeRecordNumber);
+		AbstractMsType mType = applicator.getTypeRecord(typeRecordNumber);
 		MsTypeApplier applier = applicator.getTypeApplier(typeRecordNumber);
 		// TODO:... NOT SURE IF WILL ALWAYS BE A DATATYPE OR WILL BE A VARIABLE OR ????
 		if (applier == null) {

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/UdtSourceLineTypeApplier.java

@@ -15,11 +15,8 @@
  */
 package ghidra.app.util.pdb.pdbapplicator;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
 import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
-import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
 
 /**
  * Applier for {@link AbstractBaseClassMsType}, {@link AbstractVirtualBaseClassMsType}, and
@@ -83,22 +80,23 @@ public class UdtSourceLineTypeApplier extends MsTypeApplier {
 		return null;
 	}
 
-	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-		String filename = getSourceFileName(type);
-		int lineNumber = getLineNumber(type);
-		RecordNumber udtRecordNumber = getUdtRecordNumber(type);
-		MsTypeApplier typeApplier = applicator.getTypeApplier(udtRecordNumber);
-
-		// do nothing at the moment.
-		applicator.putRecordNumberByFileName(udtRecordNumber, filename);
-		if (type instanceof UserDefinedTypeModuleSourceAndLineMsType) {
-			int moduleNumber = ((UserDefinedTypeModuleSourceAndLineMsType) type).getModuleNumber();
-			applicator.putRecordNumberByModuleNumber(udtRecordNumber, moduleNumber);
-		}
-		return null;
-	}
+	// Keeping as commented out for now so to have something to start with for this ITEM type
+//	@Override
+//	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
+//			throws PdbException, CancelledException {
+//		String filename = getSourceFileName(type);
+//		int lineNumber = getLineNumber(type);
+//		RecordNumber udtRecordNumber = getUdtRecordNumber(type);
+//		MsTypeApplier typeApplier = applicator.getTypeApplier(udtRecordNumber);
+//
+//		// do nothing at the moment.
+//		applicator.putRecordNumberByFileName(udtRecordNumber, filename);
+//		if (type instanceof UserDefinedTypeModuleSourceAndLineMsType) {
+//			int moduleNumber = ((UserDefinedTypeModuleSourceAndLineMsType) type).getModuleNumber();
+//			applicator.putRecordNumberByModuleNumber(udtRecordNumber, moduleNumber);
+//		}
+//		return null;
+//	}
 
 	private static AbstractMsType validateType(AbstractMsType type)
 			throws IllegalArgumentException {

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/VirtualFunctionTablePointerTypeApplier.java

@@ -15,24 +15,19 @@
  */
 package ghidra.app.util.pdb.pdbapplicator;
 
-import ghidra.app.util.bin.format.pdb2.pdbreader.PdbException;
-import ghidra.app.util.bin.format.pdb2.pdbreader.RecordNumber;
 import ghidra.app.util.bin.format.pdb2.pdbreader.type.*;
-import ghidra.program.model.data.DataType;
-import ghidra.util.exception.CancelledException;
 
 /**
  * Applier for {@link AbstractVirtualFunctionTablePointerMsType} and
  * {@link AbstractVirtualFunctionTablePointerWithOffsetMsType} types.
  */
-public class VirtualFunctionTablePointerTypeApplier extends MsTypeApplier {
+public class VirtualFunctionTablePointerTypeApplier extends MsDataTypeComponentApplier {
 
 	// Intended for: AbstractVirtualFunctionTablePointerMsType or
 	//  AbstractVirtualFunctionTablePointerWithOffsetMsType
 	/**
-	 * Constructor for enum type applier, for transforming a enum into a
-	 * Ghidra DataType.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Constructor for enum type applier, for transforming a enum into a Ghidra DataType
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 * @throws IllegalArgumentException Upon invalid arguments.
 	 */
 	public VirtualFunctionTablePointerTypeApplier(DefaultPdbApplicator applicator)
@@ -56,34 +51,7 @@ public class VirtualFunctionTablePointerTypeApplier extends MsTypeApplier {
 		return "VFTablePtr" + getOffset(type);
 	}
 
-	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
-
-		// usually no record number, so cannot retrieve or store from/to applicator
-
-		AbstractVirtualFunctionTablePointerMsType vftPtrType = validateType(type);
-		RecordNumber recordNumber = vftPtrType.getPointerTypeRecordNumber();
-		DataType dataType = applyPointer(recordNumber, fixupContext, breakCycle);
-
-		// unlike regular pointer, we are resolving vft pointer
-		dataType = applicator.resolve(dataType);
-		return dataType;
-	}
-
-	private DataType applyPointer(RecordNumber pointerTypeRecordNumber, FixupContext fixupContext,
-			boolean breakCycle) throws CancelledException, PdbException {
-		MsTypeApplier rawApplier = applicator.getTypeApplier(pointerTypeRecordNumber);
-		if (rawApplier instanceof PointerTypeApplier pointerApplier) {
-			AbstractMsType type = applicator.getPdb().getTypeRecord(pointerTypeRecordNumber);
-			return pointerApplier.apply(type, fixupContext, breakCycle);
-		}
-		applicator.appendLogMsg("cannot process " + rawApplier.getClass().getSimpleName() + "for " +
-			getClass().getSimpleName());
-		return null;
-	}
-
-	private static AbstractVirtualFunctionTablePointerMsType validateType(AbstractMsType type)
+	private static AbstractMsType validateType(AbstractMsType type)
 			throws IllegalArgumentException {
 		if (!(type instanceof AbstractVirtualFunctionTablePointerMsType vftPtrType)) {
 			throw new IllegalArgumentException(

Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/VtShapeTypeApplier.java

@@ -28,12 +28,12 @@ import ghidra.util.exception.CancelledException;
 /**
  * Applier for {@link VtShapeMsType} types.
  */
-public class VtShapeTypeApplier extends MsTypeApplier {
+public class VtShapeTypeApplier extends MsDataTypeApplier {
 
 	// Intended for: VtShapeMsType
 	/**
-	 * Constructor for vtshape type applier.
-	 * @param applicator {@link DefaultPdbApplicator} for which this class is working.
+	 * Constructor for vtshape type applier
+	 * @param applicator {@link DefaultPdbApplicator} for which this class is working
 	 */
 	public VtShapeTypeApplier(DefaultPdbApplicator applicator) {
 		super(applicator);
@@ -49,16 +49,16 @@ public class VtShapeTypeApplier extends MsTypeApplier {
 	}
 
 	@Override
-	DataType apply(AbstractMsType type, FixupContext fixupContext, boolean breakCycle)
-			throws PdbException, CancelledException {
+	boolean apply(AbstractMsType type) throws PdbException, CancelledException {
+
 		// Note that focused investigation as shown that both the VTShape as well as the pointer
 		// to the particular VTShapes are not specific to one class; they can be shared by
 		// totally unrelated classes; moreover, no duplicates of any VTShape or pointer to a
 		// particular VTShape were found either.  Because of this, for now, the VTShape is going
 		// into an anonymous types category.
 		DataType dataType = createVtShape((VtShapeMsType) type);
-//		return applicator.resolve(dataType);
-		return dataType;
+		applicator.putDataType(type, dataType);
+		return true;
 	}
 
 	// We are creating a structure for the vtshape.
@@ -133,4 +133,5 @@ public class VtShapeTypeApplier extends MsTypeApplier {
 		}
 		return shape; // not resolved
 	}
+
 }