# HG changeset patch
# User Augie Fackler <augie@google.com>
# Date 1439318980 14400
# Node ID 1ebf4ac075825b90334043b0bb1dab3f52f0edfc
# Parent  1ffd97cbf9a2f4bb50903c6040f13bc266a8a95a
reachableroots: if allocating a new set fails, use PyErr_NoMemory()

My inspection of the implementation of PySet_New() indicates that it
does *not* reliably set an exception in the cases where it returns
NULL (as far as I can tell it'll never do that!), so let's set that up
ourselves.

diff -r 1ffd97cbf9a2 -r 1ebf4ac07582 mercurial/parsers.c
--- a/mercurial/parsers.c	Thu Aug 06 22:11:20 2015 -0700
+++ b/mercurial/parsers.c	Tue Aug 11 14:49:40 2015 -0400
@@ -1143,8 +1143,10 @@
 
 	/* Initialize return set */
 	reachable = PySet_New(0);
-	if (reachable == NULL)
+	if (reachable == NULL) {
+		PyErr_NoMemory();
 		goto bail;
+	}
 
 	/* Initialize internal datastructures */
 	tovisit = (int *)malloc((len + 1) * sizeof(int));