diff -r b7add2ebef9e -r 30e9ee203846 mercurial/manifest.c
--- a/mercurial/manifest.c	Wed Mar 11 08:28:56 2015 -0700
+++ b/mercurial/manifest.c	Wed Mar 11 13:35:34 2015 -0700
@@ -243,7 +243,7 @@
 	consumed = pl + 41;
 	flags = PyString_FromStringAndSize(l->start + consumed,
 									   l->len - consumed - 1);
-	if (!flags) {
+	if (!path || !hash || !flags) {
 		goto bail;
 	}
 	ret = PyTuple_Pack(3, path, hash, flags);