### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: search/org/eclipse/jdt/internal/core/search/matching/PossibleMatch.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/search/org/eclipse/jdt/internal/core/search/matching/PossibleMatch.java,v
retrieving revision 1.23
diff -u -r1.23 PossibleMatch.java
--- search/org/eclipse/jdt/internal/core/search/matching/PossibleMatch.java	1 Dec 2005 16:21:55 -0000	1.23
+++ search/org/eclipse/jdt/internal/core/search/matching/PossibleMatch.java	26 Apr 2006 15:05:33 -0000
@@ -125,8 +125,10 @@
 	if (this.openable.getSourceMapper() != null) {
 		BinaryType type = (BinaryType) ((ClassFile) this.openable).getType();
 		ClassFileReader reader = MatchLocator.classFileReader(type);
-		if (reader != null)
-			this.sourceFileName = type.sourceFileName(reader);
+		if (reader != null) {
+			String fileName = type.sourceFileName(reader);
+			this.sourceFileName = fileName == null ? NO_SOURCE_FILE_NAME : fileName;
+		}
 	}
 	return this.sourceFileName;
 }