From b3fc7bdb352f562670f652b267cdc314e35ad6d4 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Sun, 8 Sep 2019 17:11:28 -0700
Subject: [PATCH] modules/m_init_backfill: Reference a static dummy instance
 for when_any().

---
 modules/m_fetch.cc | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/modules/m_fetch.cc b/modules/m_fetch.cc
index 8d647b6a8..e5a8bb2fb 100644
--- a/modules/m_fetch.cc
+++ b/modules/m_fetch.cc
@@ -290,9 +290,14 @@ ircd::m::fetch::request_handle()
 	static const auto dereferencer{[]
 	(auto &it) -> server::request &
 	{
+		// If the request doesn't have a server::request future attached
+		// during this pass we reference this default constructed static
+		// instance which when_any() will treat as a no-op.
+		static server::request request_skip;
 		auto &request(mutable_cast(*it));
-		assert(request.future);
-		return *request.future;
+		return request.future?
+			*request.future:
+			request_skip;
 	}};
 
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