# HG changeset patch
# User David A. Holland
# Date 1364696982 14400
# Node ID ad7763329eba34015a3a020b2bfd683d215957bf
# Parent  ef8bedab8a4b243e2882ed1da08183bf0b40c0ae
Don't crash if a macro tries to expand itself recursively.

diff -r ef8bedab8a4b -r ad7763329eba macro.c
--- a/macro.c	Sat Mar 30 21:50:37 2013 -0400
+++ b/macro.c	Sat Mar 30 22:29:42 2013 -0400
@@ -844,7 +844,7 @@
 			break;
 		}
 		m = macrotable_findlen(buf, len, false);
-		if (m == NULL) {
+		if (m == NULL || m->inuse) {
 			expand_send(es, p, buf, len);
 		} else if (!m->hasparams) {
 			m->inuse = true;