From 65f87b58bcec12c94ebbc18963267617138034f0 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Thu, 13 Sep 2018 05:00:57 -0700
Subject: [PATCH] ircd::m: Use better constexpr for room_id() stack buffer
 size.

---
 ircd/m/m.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/ircd/m/m.cc b/ircd/m/m.cc
index 5b5728a3c..4379ac478 100644
--- a/ircd/m/m.cc
+++ b/ircd/m/m.cc
@@ -2782,14 +2782,16 @@ ircd::m::count_since(const room &r,
 ircd::m::id::room::buf
 ircd::m::room_id(const id::room_alias &room_alias)
 {
-	char buf[256];
+	char buf[m::id::MAX_SIZE + 1];
+	static_assert(sizeof(buf) <= 256);
 	return room_id(buf, room_alias);
 }
 
 ircd::m::id::room::buf
 ircd::m::room_id(const string_view &room_id_or_alias)
 {
-	char buf[256];
+	char buf[m::id::MAX_SIZE + 1];
+	static_assert(sizeof(buf) <= 256);
 	return room_id(buf, room_id_or_alias);
 }