X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/secnet/blobdiff_plain/8dea8d37a13fcc615daba3375809900f04a2e5a2..469fd1d95b2528212a46b155cb115c078de4228f:/ipaddr.c

diff --git a/ipaddr.c b/ipaddr.c
index 2dc5928..f42e820 100644
--- a/ipaddr.c
+++ b/ipaddr.c
@@ -74,7 +74,8 @@ string_t subnet_to_string(struct subnet *sn)
 	mask=(mask<<1);
     }
     if (i!=sn->len) {
-	fatal("subnet_to_string: invalid subnet structure!\n");
+	fatal("subnet_to_string: invalid subnet structure "
+	      "(i=%d sn->len=%d mask=0x%08x)!\n",i,sn->len,sn->mask);
     }
     snprintf(s, 19, "%d.%d.%d.%d/%d", a, b, c, d, sn->len);
     return s;