--- a/cdt/cdt_5_0_x/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/executables/Executable.java	Wed May 20 15:37:54 2009 -0500
+++ b/cdt/cdt_5_0_x/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/executables/Executable.java	Mon Jun 01 19:15:36 2009 -0500
@@ -131,7 +131,7 @@
 		return super.getAdapter(adapter);
 	}
 
-	public TranslationUnit[] getSourceFiles(IProgressMonitor monitor) {
+	public synchronized TranslationUnit[] getSourceFiles(IProgressMonitor monitor) {
 		
 		if (!refreshSourceFiles)
 			return sourceFiles.toArray(new TranslationUnit[sourceFiles.size()]) ;
@@ -229,7 +229,7 @@
 		this.refreshSourceFiles = refreshSourceFiles;
 	}
 
-	public String getOriginalLocation(ITranslationUnit tu) {
+	public synchronized String getOriginalLocation(ITranslationUnit tu) {
 		String orgLocation = remappedPaths.get(tu);
 		if (orgLocation == null)
 			orgLocation = tu.getLocation().toOSString();