# 
# 
# patch "work.cc"
#  from [7e91a9216deab1463fde0f8193c2384909199193]
#    to [93f9a313b74fe8d80f401f07b0fa24651c6e88fa]
# 
============================================================
--- work.cc	7e91a9216deab1463fde0f8193c2384909199193
+++ work.cc	93f9a313b74fe8d80f401f07b0fa24651c6e88fa
@@ -1380,6 +1380,8 @@ workspace::perform_rename(set<file_path>
       // "rename SRC DST" case
       split_path s;
       src_paths.begin()->split(s);
+      N(new_roster.has_node(s),
+        F("source file %s is not versioned") % s);
       renames.insert( make_pair(s, dst) );
       add_parent_dirs(dst, new_roster, nis, db, lua);
     }