--- BDB/schmorp.h	2009/07/18 05:58:09	1.5
+++ BDB/schmorp.h	2009/08/05 11:52:34	1.6
@@ -22,6 +22,10 @@
        && (PERL_VERSION > (b)					\
            || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
 
+#ifndef PERL_MAGIC_ext
+# define PERL_MAGIC_ext '~'
+#endif
+
 #if !PERL_VERSION_ATLEAST (5,6,0)
 # ifndef PL_ppaddr
 #  define PL_ppaddr ppaddr
@@ -474,7 +478,7 @@
   pfd.fd = s_epipe_fd (epp);
   pfd.events = POLLIN;
 
-  return poll (&pfd, 1, 0);
+  return poll (&pfd, 1, -1);
 #endif
 }