--- src/eixTk/compare.h.orig	2008-09-20 22:19:18.000000000 +0200
+++ src/eixTk/compare.h	2008-09-20 22:18:03.000000000 +0200
@@ -41,7 +41,8 @@
       if (size_result)
           return size_result;
       // both strings have the same length, do string comparison
-      return left.compare(lstart, std::string::npos, right, rstart, std::string::npos);
+      return left.compare(lstart == std::string::npos ? 0 : lstart, std::string::npos, right, 
+						  rstart == std::string::npos ? 0 : rstart, std::string::npos);
   }
 }