# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 1138519678 -46800
# Node ID bfa90d9a3b77ff0aab5e568e6aa438ef93fdc3ae
# Parent  f5e194047f1ea7abaa2ee6b516bdce7bd599cfd9
Add revlog version signature check



diff -r f5e194047f1e -r bfa90d9a3b77 mercurial/revlog.py
--- a/mercurial/revlog.py	Sun Jan 29 20:13:43 2006 +1300
+++ b/mercurial/revlog.py	Sun Jan 29 20:27:58 2006 +1300
@@ -197,6 +197,10 @@
                 raise
             i = ""
 
+        if i[:4] != "\0\0\0\0":
+            raise RevlogError(_("incompatible revlog signature on %s") %
+                              self.indexfile)
+
         if len(i) > 10000:
             # big index, let's parse it on demand
             parser = lazyparser(i, self)