Index: svn_string.c
===================================================================
--- svn_string.c	(revision 6178)
+++ svn_string.c	(working copy)
@@ -319,6 +319,9 @@
 {
   apr_size_t amt = strlen (value);
 
+  /* NOTE: This function is supposed to coredump if value == null
+     this is by design
+  */
   svn_stringbuf_ensure (str, amt + 1);
   memcpy (str->data, value, amt + 1);
   str->len = amt;