The PathEntryManager was returning the array instead

of making a copy.  Potentially clients could have
	modified the contents.

	* model/org/eclipse/cdt/internal/core/model/PathEntryManager.java
	* model/org/eclipse/cdt/internal/core/model/IMacroEntry.java
	* src/org/eclipse/cdt/core/resources/ScannerProvider.java

core/org.eclipse.cdt.core/ChangeLog

@@ -1,3 +1,13 @@
+2004-06-21 Alain Magloire
+
+	The PathEntryManager was returning the array instead
+	of making a copy.  Potentially clients could have
+	modified the contents.
+
+	* model/org/eclipse/cdt/internal/core/model/PathEntryManager.java
+	* model/org/eclipse/cdt/internal/core/model/IMacroEntry.java
+	* src/org/eclipse/cdt/core/resources/ScannerProvider.java
+
 2004-06-21 Hoda Amer
 	Fix for PR 67696: [I18N] - New Class Wizard does not take project encoding into account when creating files
 	Now the encoding is taken into consideration when committing a working copy contents to a file.

core/org.eclipse.cdt.core/model/org/eclipse/cdt/core/model/IMacroEntry.java

@@ -35,6 +35,11 @@ public interface IMacroEntry extends IPathEntry {
 	 */
 	IPath[] getExclusionPatterns();
 
+	/**
+	 * Returns a char based representation of the exclusions patterns full path.
+	 */
+	public char[][] fullExclusionPatternChars();
+
 	/**
 	 * Return the base path.
 	 * @return

core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/PathEntryManager.java

@@ -148,13 +148,14 @@ public class PathEntryManager implements IPathEntryStoreListener, IElementChange
 	}
 	
 	public IPathEntry[] getResolvedPathEntries(ICProject cproject, boolean generateMarkers) throws CModelException {
-		IPathEntry[] entries = (IPathEntry[])resolvedMap.get(cproject);
+		ArrayList listEntries = (ArrayList)resolvedMap.get(cproject);
-		if (entries == null) {
+		IPathEntry[] resolvedEntries;
+		if (listEntries == null) {
 			IPath projectPath = cproject.getPath();
-			entries = getRawPathEntries(cproject);
+			IPathEntry[] rawEntries = getRawPathEntries(cproject);
-			ArrayList list = new ArrayList();
+			listEntries = new ArrayList();
-			for (int i = 0; i < entries.length; i++) {
+			for (int i = 0; i < rawEntries.length; i++) {
-				IPathEntry entry = entries[i];
+				IPathEntry entry = rawEntries[i];
 				// Expand the containers.
 				if (entry.getEntryKind() == IPathEntry.CDT_CONTAINER) {
 					IContainerEntry centry = (IContainerEntry) entry;
@@ -164,7 +165,7 @@ public class PathEntryManager implements IPathEntryStoreListener, IElementChange
 						if (containerEntries != null) {
 							for (int j = 0; j < containerEntries.length; j++) {
 								IPathEntry newEntry = cloneEntry(projectPath, containerEntries[j]);
-								list.add(newEntry);
+								listEntries.add(newEntry);
 							}
 						}
 					}
@@ -172,15 +173,15 @@ public class PathEntryManager implements IPathEntryStoreListener, IElementChange
 					IPathEntry clone = cloneEntry(projectPath, entry);
 					IPathEntry e = getExpandedPathEntry(clone, cproject);
 					if (e != null) {
-						list.add(e);
+						listEntries.add(e);
 					}
 				}
 			}
-			entries = new IPathEntry[list.size()];
+			listEntries.trimToSize();
-			list.toArray(entries);
+			resolvedEntries = (IPathEntry[])listEntries.toArray(NO_PATHENTRIES);
 			if (generateMarkers) {
 				final ICProject finalCProject = cproject;
-				final IPathEntry[] finalEntries = entries;
+				final IPathEntry[] finalEntries = resolvedEntries; 
 				Job markerTask = new Job("PathEntry Marker Job") { //$NON-NLS-1$
 					/* (non-Javadoc)
 					 * @see org.eclipse.core.runtime.jobs.Job#run(org.eclipse.core.runtime.IProgressMonitor)
@@ -203,9 +204,11 @@ public class PathEntryManager implements IPathEntryStoreListener, IElementChange
 				};
 				markerTask.schedule();
 			}
-			resolvedMap.put(cproject, entries);
+			resolvedMap.put(cproject, listEntries);
+		} else {
+			resolvedEntries = (IPathEntry[])listEntries.toArray(NO_PATHENTRIES);
 		}
-		return entries;
+		return resolvedEntries;
 	}
 
 	private IPathEntry getExpandedPathEntry(IPathEntry entry, ICProject cproject) throws CModelException {
@@ -387,7 +390,11 @@ public class PathEntryManager implements IPathEntryStoreListener, IElementChange
 
 	public void setRawPathEntries(ICProject cproject, IPathEntry[] newEntries, IProgressMonitor monitor) throws CModelException {
 		try {
-			IPathEntry[] oldResolvedEntries = (IPathEntry[]) resolvedMap.get(cproject);
+			IPathEntry[] oldResolvedEntries = null;
+			ArrayList listEntries = (ArrayList)resolvedMap.get(cproject);
+			if (listEntries != null) {
+				oldResolvedEntries = (IPathEntry[])listEntries.toArray(NO_PATHENTRIES);
+			}
 			SetPathEntriesOperation op = new SetPathEntriesOperation(cproject, oldResolvedEntries, newEntries);
 			CModelManager.getDefault().runOperation(op, monitor);
 		} catch (CoreException e) {
@@ -482,7 +489,12 @@ public class PathEntryManager implements IPathEntryStoreListener, IElementChange
 				continue;
 			}
 			remaining++;
-			oldResolvedEntries[i] = (IPathEntry[]) resolvedMap.remove(affectedProject);
+			ArrayList listEntries = (ArrayList) resolvedMap.remove(affectedProject);
+			if (listEntries != null) {
+				oldResolvedEntries[i] = (IPathEntry[]) listEntries.toArray(NO_PATHENTRIES);
+			} else {
+				oldResolvedEntries[i] = null;
+			}
 			containerPut(affectedProject, containerPath, newContainer);
 		}
 		// Nothing change.
@@ -1014,7 +1026,11 @@ public class PathEntryManager implements IPathEntryStoreListener, IElementChange
 		if (project.isAccessible()) {
 			try {
 				// Clear the old cache entries.
-				IPathEntry[] oldResolvedEntries = (IPathEntry[])resolvedMap.remove(cproject);
+				IPathEntry[] oldResolvedEntries = null;
+				ArrayList listEntries = (ArrayList) resolvedMap.remove(cproject);
+				if (listEntries != null) {
+					oldResolvedEntries = (IPathEntry[])listEntries.toArray(NO_PATHENTRIES);
+				}
 				IPathEntry[] newResolvedEntries = getResolvedPathEntries(cproject);
 				ICElementDelta[] deltas = generatePathEntryDeltas(cproject, oldResolvedEntries, newResolvedEntries);
 				if (deltas.length > 0) {

core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/resources/ScannerProvider.java

@@ -18,6 +18,7 @@ import java.util.Map;
 import org.eclipse.cdt.core.AbstractCExtension;
 import org.eclipse.cdt.core.model.CModelException;
 import org.eclipse.cdt.core.model.CoreModel;
+import org.eclipse.cdt.core.model.CoreModelUtil;
 import org.eclipse.cdt.core.model.ElementChangedEvent;
 import org.eclipse.cdt.core.model.ICElement;
 import org.eclipse.cdt.core.model.ICElementDelta;
@@ -89,6 +90,31 @@ public class ScannerProvider extends AbstractCExtension implements IScannerInfoP
 			if (cproject != null) {
 				IPathEntry[] entries = cproject.getResolvedPathEntries();
 				
+				// First deal with the exclusion any entry that
+				// excludes the file should not be part of the list.
+				for (int k = 0; k < entries.length; k++) {
+					switch (entries[k].getEntryKind()) {
+						case IPathEntry.CDT_INCLUDE:
+							IIncludeEntry incEntry = (IIncludeEntry)entries[k];
+							if (CoreModelUtil.isExcluded(resPath, incEntry.fullExclusionPatternChars())) {
+								entries[k] = null;
+							}
+							break;
+						case IPathEntry.CDT_MACRO:
+							IMacroEntry macEntry = (IMacroEntry)entries[k];
+							if (CoreModelUtil.isExcluded(resPath, macEntry.fullExclusionPatternChars())) {
+								entries[k] = null;
+							}
+							break;
+						case IPathEntry.CDT_PROJECT:
+							// do nothing.
+							break;
+						default:
+							// not interrested in the other types.
+							entries[k] = null;
+					}
+				}
+
 				// We need to reorder the include/macros:
 				// includes the closest match to the resource will come first
 				// /project/src/file.c  --> /usr/local/include
@@ -101,12 +127,14 @@ public class ScannerProvider extends AbstractCExtension implements IScannerInfoP
 				// /project/src       --> NDEBUG=0
 				//
 				// We will use NDEBUG=1 only
+				
 				int count = resPath.segmentCount();
 				ArrayList includeList = new ArrayList();
 				Map symbolMap = new HashMap();
 				for (int i = 0; i < count; i++) {
 					IPath newPath = resPath.removeLastSegments(i);
 					for (int j = 0; j < entries.length; j++) {
+						if (entries[j] != null) {
 							IPathEntry entry = entries[j];
 							IPath otherPath = entry.getPath();
 							if (newPath.equals(otherPath)) {
@@ -123,11 +151,12 @@ public class ScannerProvider extends AbstractCExtension implements IScannerInfoP
 							}
 						}
 					}
+				}
 
 				// Add the Project contributions last.
 				for (int i = 0; i < entries.length; i++) {
 					IPathEntry entry = entries[i];
-					if (entry.getEntryKind() == IPathEntry.CDT_PROJECT) {
+					if (entry != null && entry.getEntryKind() == IPathEntry.CDT_PROJECT) {
 						IResource res = resource.getWorkspace().getRoot().findMember(entry.getPath());
 						if (res != null && res.getType() == IResource.PROJECT) {
 							ICProject refCProject = CoreModel.getDefault().create((IProject)res);