diff --git a/include/ircd/buffer/buffer.h b/include/ircd/buffer/buffer.h
index 9c4130278..4e306e3a2 100644
--- a/include/ircd/buffer/buffer.h
+++ b/include/ircd/buffer/buffer.h
@@ -197,7 +197,7 @@ ircd::buffer::consume(buffer<it> &b,
 {
 	assert(!null(b));
 	assert(bytes <= size(b));
-	const auto &advance
+	const size_t advance
 	{
 		std::min(bytes, size(b))
 	};
diff --git a/include/ircd/m/fetch.h b/include/ircd/m/fetch.h
index e333ba806..bfb0de1f0 100644
--- a/include/ircd/m/fetch.h
+++ b/include/ircd/m/fetch.h
@@ -151,6 +151,8 @@ struct ircd::m::fetch::result
 	/// instance go out of scope by making this conversion.
 	explicit operator json::object() const;
 	explicit operator json::array() const;
+
+	result() = default;
 };
 
 /// Fetch entity state. DO NOT CONSTRUCT. This is an internal structure but we
diff --git a/ircd/ctx_ole.cc b/ircd/ctx_ole.cc
index da19f3bf8..d3d0eb110 100644
--- a/ircd/ctx_ole.cc
+++ b/ircd/ctx_ole.cc
@@ -12,6 +12,7 @@
 
 namespace ircd::ctx::ole
 {
+	static const opts default_opts;
 	extern conf::item<size_t> thread_max;
 
 	static std::mutex mutex;
@@ -65,8 +66,12 @@ noexcept
 	});
 }
 
+//
+// ole::offload
+//
+
 ircd::ctx::ole::offload::offload(const function &func)
-:offload{opts{}, func}
+:offload{default_opts, func}
 {
 }
 
diff --git a/ircd/fs.cc b/ircd/fs.cc
index 524ce02ac..137408938 100644
--- a/ircd/fs.cc
+++ b/ircd/fs.cc
@@ -831,13 +831,15 @@ ircd::fs::incore(const fd &fd,
                  const size_t &count,
                  const read_opts &opts)
 {
+	const fs::opts fs_opts
+	{
+		.offset = off_t(align(opts.offset, info::page_size)),
+		.blocking = false,
+	};
+
 	const fs::map::opts map_opts
 	{
-		fs::opts
-		{
-			.offset = off_t(align(opts.offset, info::page_size)),
-			.blocking = false,
-		},
+		{ fs_opts },
 	};
 
 	const size_t &map_size
@@ -853,7 +855,7 @@ ircd::fs::incore(const fd &fd,
 	assert(map_opts.offset % 4096 == 0);
 	const fs::map map
 	{
-		fd, map_opts, map_size
+		fd, map_size, map_opts
 	};
 
 	const size_t res