Index: src/StreamFormatConverter.cc
===================================================================
RCS file: /afs/psi.ch/user/z/zimoch/.cvsroot/StreamDevice2/src/StreamFormatConverter.cc,v
retrieving revision 1.18
diff -u -r1.18 StreamFormatConverter.cc
--- src/StreamFormatConverter.cc	15 Sep 2008 09:33:47 -0000	1.18
+++ src/StreamFormatConverter.cc	7 Oct 2008 08:44:30 -0000
@@ -278,7 +278,7 @@
     if (*input == '\0')
     {
         // match empty string
-        value[0] = '\0';
+        if (value) value[0] = '\0';
         return 0;
     }
     if (fmt.flags & skip_flag)