diff --git a/core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/coff/parser/BinaryObject.java b/core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/coff/parser/BinaryObject.java
index f38245267f3..771b14acc31 100644
--- a/core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/coff/parser/BinaryObject.java
+++ b/core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/coff/parser/BinaryObject.java
@@ -252,6 +252,11 @@ public class BinaryObject extends BinaryFile implements IBinaryObject {
 				if (addr2line != null) {
 					try {
 						String filename =  addr2line.getFileName(sym.addr);
+						// Addr2line returns the funny "??" when it can not find the file.
+						if (filename != null && filename.equals("??")) {
+							filename = null;
+						}
+
 						if (filename != null) {
 							if (cygpath != null) {
 								sym.filename =  new Path(cygpath.getFileName(filename));