Add noexcept to various lambdas (gcc-11).

include/ircd/ctx/concurrent.h

@@ -56,7 +56,7 @@ template<class value>
 void
 ircd::ctx::concurrent<value>::wait()
 {
-	d.wait([this]
+	d.wait([this]() noexcept
 	{
 		return snd == fin;
 	});
@@ -68,7 +68,7 @@ void
 ircd::ctx::concurrent<value>::operator()(V&& v)
 {
 	++snd;
-	p([this, v(std::move(v))]
+	p([this, v(std::move(v))]() noexcept
 	{
 		++rcv; try
 		{

include/ircd/json/value.h

@@ -125,7 +125,7 @@ struct ircd::json::value
 	value(const json::object &);
 	value(const json::array &);
 	value(const nullptr_t &);
-	value();
+	value() noexcept;
 	value(value &&) noexcept;
 	value(const value &);
 	value &operator=(value &&) noexcept;
@@ -137,6 +137,7 @@ static_assert(sizeof(ircd::json::value) == 16, "");
 
 inline
 ircd::json::value::value()
+noexcept
 :string{nullptr}
 ,len{0}
 ,type{STRING}

include/ircd/m/event/auth.h

@@ -68,7 +68,8 @@ ircd::m::event::auth::ids(event::id (&out)[N])
 const
 {
 	size_t i(0);
-	m::for_each(*this, [&i, &out](const event::id &event_id)
+	m::for_each(*this, [&i, &out]
+	(const event::id &event_id) noexcept
 	{
 		out[i++] = event_id;
 		return i < N;

include/ircd/tokens.h

@@ -18,15 +18,15 @@ namespace ircd
 	// to allocate and copy the token with null termination.
 	using token_view = closure_bool<std::function, const string_view &>;
 
-	bool tokens(const string_view &str, const char sep, const token_view &);
-	bool tokens(const string_view &str, const string_view &sep, const token_view &);
+	bool tokens(const string_view &, const char sep, const token_view &) noexcept;
+	bool tokens(const string_view &, const string_view &sep, const token_view &) noexcept;
 
-	size_t tokens(const string_view &str, const char sep, const size_t limit, const token_view &);
-	size_t tokens(const string_view &str, const string_view &sep, const size_t limit, const token_view &);
+	size_t tokens(const string_view &, const char sep, const size_t lim, const token_view &) noexcept;
+	size_t tokens(const string_view &, const string_view &sep, const size_t lim, const token_view &) noexcept;
 
 	// Copies tokens into your buffer and null terminates strtok() style. Returns BYTES of buf consumed.
-	size_t tokens(const string_view &str, const char sep, const mutable_buffer &buf, const token_view &);
-	size_t tokens(const string_view &str, const string_view &sep, const mutable_buffer &buf, const token_view &);
+	size_t tokens(const string_view &, const char sep, const mutable_buffer &, const token_view &) noexcept;
+	size_t tokens(const string_view &, const string_view &sep, const mutable_buffer &, const token_view &) noexcept;
 
 	// Receive token view into iterator range
 	template<class it,
@@ -81,17 +81,17 @@ namespace ircd
 // Tools
 namespace ircd
 {
-	size_t token_count(const string_view &str, const char sep);
-	size_t token_count(const string_view &str, const string_view &sep);
+	size_t token_count(const string_view &str, const char sep) noexcept;
+	size_t token_count(const string_view &str, const string_view &sep) noexcept;
 
-	bool token_exists(const string_view &str, const char sep, const string_view &token);
-	bool token_exists(const string_view &str, const string_view &sep, const string_view &token);
+	bool token_exists(const string_view &str, const char sep, const string_view &token) noexcept;
+	bool token_exists(const string_view &str, const string_view &sep, const string_view &token) noexcept;
 
 	string_view token(const string_view &str, const char sep, const size_t at);
 	string_view token(const string_view &str, const string_view &sep, const size_t at);
 
-	string_view token(const string_view &str, const char sep, const size_t at, const string_view &def);
-	string_view token(const string_view &str, const string_view &sep, const size_t at, const string_view &def);
+	string_view token(const string_view &str, const char sep, const size_t at, const string_view &def) noexcept;
+	string_view token(const string_view &str, const string_view &sep, const size_t at, const string_view &def) noexcept;
 
 	string_view token_last(const string_view &str, const char sep);
 	string_view token_last(const string_view &str, const string_view &sep);
@@ -99,11 +99,11 @@ namespace ircd
 	string_view token_first(const string_view &str, const char sep);
 	string_view token_first(const string_view &str, const string_view &sep);
 
-	string_view tokens_after(const string_view &str, const char sep, const ssize_t at = 0);
-	string_view tokens_after(const string_view &str, const string_view &sep, const ssize_t at = 0);
+	string_view tokens_after(const string_view &str, const char sep, const ssize_t at = 0) noexcept;
+	string_view tokens_after(const string_view &str, const string_view &sep, const ssize_t at = 0) noexcept;
 
-	string_view tokens_before(const string_view &str, const char sep, const size_t at = 0);
-	string_view tokens_before(const string_view &str, const string_view &sep, const size_t at = 0);
+	string_view tokens_before(const string_view &str, const char sep, const size_t at = 0) noexcept;
+	string_view tokens_before(const string_view &str, const string_view &sep, const size_t at = 0) noexcept;
 }
 
 template<size_t N,

include/ircd/util/params.h

@@ -204,7 +204,7 @@ const
 	size_t j{i};
 	string_view ret;
 	for_each_posarg([&ret, &j]
-	(const string_view &token)
+	(const string_view &token) noexcept
 	{
 		if(j-- == 0)
 		{
@@ -225,7 +225,7 @@ const
 	{
 		string_view ret;
 		for_each_pararg([&ret, &arg]
-		(const string_view &token)
+		(const string_view &token) noexcept
 		{
 			if(startswith(token, arg))
 			{
@@ -246,7 +246,7 @@ const
 {
 	if(prefix && startswith(arg, prefix))
 		return !for_each_pararg([&arg]
-		(const string_view &token)
+		(const string_view &token) noexcept
 		{
 			return !startswith(token, arg);
 		});
@@ -259,7 +259,8 @@ ircd::util::params::count()
 const
 {
 	size_t ret{0};
-	for_each_posarg([&ret](const string_view &)
+	for_each_posarg([&ret]
+	(const string_view &) noexcept
 	{
 		++ret;
 		return true;
@@ -273,7 +274,8 @@ ircd::util::params::count_pararg()
 const
 {
 	size_t ret{0};
-	for_each_pararg([&ret](const string_view &)
+	for_each_pararg([&ret]
+	(const string_view &) noexcept
 	{
 		++ret;
 		return true;

ircd/cl.cc

@@ -2486,7 +2486,8 @@ ircd::cl::wait_event_callback(work &work,
 	};
 
 	// Completion condition closure to be satisfied.
-	const auto condition{[&c, &desired]() -> bool
+	const auto condition{[&c, &desired]
+	() noexcept -> bool
 	{
 		return !c.event || c.status <= desired;
 	}};

ircd/client.cc

@@ -184,7 +184,7 @@ ircd::client::wait_all()
 
 	static const auto is_empty
 	{
-		[] { return client::map.empty(); }
+		[]() noexcept { return client::map.empty(); }
 	};
 
 	while(!dock.wait_for(seconds(3), is_empty))

ircd/ctx_ole.cc

@@ -106,6 +106,7 @@ ircd::ctx::ole::offload::offload(const opts &opts,
 		// synchronization we need to hit the latch from this thread.
 		assert(context);
 		signal(*context, [&latch]
+		() noexcept
 		{
 			assert(!latch.is_ready());
 			latch.count_down();

ircd/db.cc

@@ -579,7 +579,7 @@ noexcept
 			queue.size(),
 		};
 
-		dock.wait_for(seconds(5), [this]
+		dock.wait_for(seconds(5), [this]() noexcept
 		{
 			return queue.empty();
 		});
@@ -640,7 +640,7 @@ size_t
 ircd::db::prefetcher::cancel(column &c)
 {
 	return cancel([&c]
-	(const auto &request)
+	(const auto &request) noexcept
 	{
 		return request.cid == id(c);
 	});
@@ -650,7 +650,7 @@ size_t
 ircd::db::prefetcher::cancel(database &d)
 {
 	return cancel([&d]
-	(const auto &request)
+	(const auto &request) noexcept
 	{
 		return request.d == std::addressof(d);
 	});
@@ -693,7 +693,7 @@ try
 {
 	while(1)
 	{
-		dock.wait([this]
+		dock.wait([this]() noexcept
 		{
 			if(queue.empty())
 				return false;
@@ -893,7 +893,7 @@ ircd::db::prefetcher::wait_pending()
 		fetched_counter + request_workers
 	};
 
-	dock.wait([this, &fetched_target]
+	dock.wait([this, &fetched_target]() noexcept
 	{
 		return this->ticker->fetched >= fetched_target;
 	});
@@ -1415,7 +1415,7 @@ ircd::db::txn::has(const op &op,
 const
 {
 	return !for_each(*this, delta_closure_bool{[&op, &col]
-	(const auto &delta)
+	(const auto &delta) noexcept
 	{
 		return std::get<delta::OP>(delta) != op &&
 		       std::get<delta::COL>(delta) != col;
@@ -1463,7 +1463,7 @@ ircd::db::txn::has(const op &op,
 const
 {
 	return !for_each(*this, delta_closure_bool{[&op, &col, &key]
-	(const auto &delta)
+	(const auto &delta) noexcept
 	{
 		return std::get<delta::OP>(delta) != op &&
 		       std::get<delta::COL>(delta) != col &&
@@ -3009,7 +3009,7 @@ ircd::db::bytes_value(column &column,
 {
 	size_t ret{0};
 	column(key, std::nothrow, gopts, [&ret]
-	(const string_view &value)
+	(const string_view &value) noexcept
 	{
 		ret = value.size();
 	});
@@ -4057,7 +4057,7 @@ ircd::db::count(const rocksdb::Cache &cache)
 {
 	size_t ret(0);
 	for_each(cache, [&ret]
-	(const const_buffer &)
+	(const const_buffer &) noexcept
 	{
 		++ret;
 	});

ircd/db.h

@@ -297,7 +297,7 @@ ircd::db::database::mergeop final
 	bool Merge(const rocksdb::Slice &, const rocksdb::Slice *, const rocksdb::Slice &, std::string *, rocksdb::Logger *) const noexcept override;
 	const char *Name() const noexcept override;
 
-	mergeop(database *const &d, merge_closure merger = nullptr);
+	mergeop(database *const &d, merge_closure merger = nullptr) noexcept;
 	~mergeop() noexcept;
 };
 
@@ -506,7 +506,7 @@ ircd::db::database::logger final
 
 	rocksdb::Status Close() noexcept override;
 
-	logger(database *const &d);
+	logger(database *const &d) noexcept;
 	~logger() noexcept override;
 };
 

ircd/db_database.cc

@@ -2144,6 +2144,7 @@ noexcept
 //
 
 ircd::db::database::logger::logger(database *const &d)
+noexcept
 :rocksdb::Logger{}
 ,d{d}
 {
@@ -2248,6 +2249,7 @@ noexcept
 
 ircd::db::database::mergeop::mergeop(database *const &d,
                                      merge_closure merger)
+noexcept
 :d{d}
 ,merger
 {

ircd/exec.cc

@@ -84,7 +84,7 @@ ircd::exec::~exec()
 noexcept try
 {
 	join(SIGKILL);
-	dock.wait([this]
+	dock.wait([this]() noexcept
 	{
 		return this->pid <= 0;
 	});
@@ -150,7 +150,7 @@ try
 	};
 
 	//child->wait();
-	dock.wait([this]
+	dock.wait([this]() noexcept
 	{
 		return this->pid <= 0;
 	});

ircd/fs_aio.cc

@@ -648,7 +648,7 @@ ircd::fs::aio::request::queued()
 const
 {
 	return !for_each_queued([this]
-	(const auto &request)
+	(const auto &request) noexcept
 	{
 		return &request != this; // true to continue and return true
 	});
@@ -853,7 +853,7 @@ ircd::fs::aio::system::wait()
 		log, "Waiting for AIO context %p", this
 	};
 
-	dock.wait([this]
+	dock.wait([this]() noexcept
 	{
 		return ecount == uint64_t(-1);
 	});

ircd/fs_iou.cc

@@ -478,7 +478,7 @@ ircd::fs::iou::system::wait()
 		log, "Waiting for iou context %p", this
 	};
 
-	dock.wait([this]
+	dock.wait([this]() noexcept
 	{
 		return ev_count == uint64_t(-1);
 	});

ircd/gpt.cc

@@ -914,7 +914,7 @@ ircd::gpt::samp::tokenize()
 	}
 
 	ircd::tokens(str, delim, [this, &count, &p, &phrases]
-	(const string_view &phrase) -> bool
+	(const string_view &phrase) noexcept -> bool
 	{
 		assert(!empty(phrase));
 		const vector_view<u16> buf

ircd/ios.cc

@@ -590,7 +590,7 @@ ircd::ios::dispatch::dispatch(descriptor &descriptor,
                               yield_t)
 :dispatch
 {
-	descriptor, defer, yield, []
+	descriptor, defer, yield, []() noexcept
 	{
 	}
 }

ircd/magick.cc

@@ -258,7 +258,7 @@ noexcept
 	};
 
 	call_ready = false;
-	call_dock.wait([]
+	call_dock.wait([]() noexcept
 	{
 		return !call_mutex.locked();
 	});

ircd/mods_ldso.cc

@@ -172,7 +172,8 @@ size_t
 ircd::mods::ldso::count()
 {
 	size_t ret(0);
-	for_each([&ret](const struct link_map &)
+	for_each([&ret]
+	(const struct link_map &) noexcept
 	{
 		++ret;
 		return true;

ircd/net.cc

@@ -643,7 +643,7 @@ const ircd::net::close_opts_default
 /// of close(). This callback does nothing.
 ircd::net::close_callback
 const ircd::net::close_ignore{[]
-(std::exception_ptr eptr)
+(std::exception_ptr eptr) noexcept
 {
 	return;
 }};
@@ -1550,7 +1550,7 @@ try
 {
 	assert(!fini);
 	const auto interruption{[this]
-	(ctx::ctx *const &)
+	(ctx::ctx *const &) noexcept
 	{
 		this->cancel();
 	}};
@@ -1742,7 +1742,7 @@ try
 
 	assert(!fini);
 	const auto interruption{[this]
-	(ctx::ctx *const &)
+	(ctx::ctx *const &) noexcept
 	{
 		this->cancel();
 	}};
@@ -1781,7 +1781,7 @@ try
 {
 	assert(!fini);
 	const auto interruption{[this]
-	(ctx::ctx *const &)
+	(ctx::ctx *const &) noexcept
 	{
 		this->cancel();
 	}};
@@ -1887,7 +1887,7 @@ try
 	assert(!fini);
 	assert(!blocking(*this));
 	const auto interruption{[this]
-	(ctx::ctx *const &)
+	(ctx::ctx *const &) noexcept
 	{
 		this->cancel();
 	}};
@@ -1921,7 +1921,7 @@ try
 	assert(!fini);
 	assert(!blocking(*this));
 	const auto interruption{[this]
-	(ctx::ctx *const &)
+	(ctx::ctx *const &) noexcept
 	{
 		this->cancel();
 	}};

ircd/net_addrs.cc

@@ -15,7 +15,8 @@ bool
 ircd::net::addrs::has_usable_ipv6_interface()
 try
 {
-	return !for_each([](const addr &a)
+	return !for_each([]
+	(const addr &a) noexcept
 	{
 		if(a.family != AF_INET6)
 			return true;

ircd/net_dns_resolver.cc

@@ -126,7 +126,7 @@ ircd::net::dns::resolver::~resolver()
 noexcept
 {
 	const ctx::uninterruptible::nothrow ui;
-	done.wait([this]
+	done.wait([this]() noexcept
 	{
 		if(!tags.empty())
 			log::warning
@@ -231,7 +231,7 @@ ircd::net::dns::resolver::sendq_worker()
 {
 	while(1)
 	{
-		dock.wait([this]
+		dock.wait([this]() noexcept
 		{
 			assert(sendq.empty() || !tags.empty());
 			return !sendq.empty() && !server.empty();
@@ -289,7 +289,7 @@ ircd::net::dns::resolver::timeout_worker()
 		// Dock here until somebody submits a request into the tag map. Also
 		// wait until recv_idle is asserted which indicates the UDP queue has
 		// been exhausted.
-		dock.wait([this]
+		dock.wait([this]() noexcept
 		{
 			return !tags.empty() && recv_idle;
 		});

ircd/net_listener.cc

@@ -439,7 +439,7 @@ noexcept try
 	if(!ctx::current)
 		return;
 
-	joining.wait([this]
+	joining.wait([this]() noexcept
 	{
 		return !accepting && handshaking.empty();
 	});

ircd/net_listener_udp.cc

@@ -153,7 +153,7 @@ ircd::net::acceptor_udp::join()
 noexcept try
 {
 	interrupt();
-	joining.wait([this]
+	joining.wait([this]() noexcept
 	{
 		return waiting == 0;
 	});
@@ -194,7 +194,7 @@ ircd::net::acceptor_udp::operator()(datagram &datagram)
 	};
 
 	const auto interruption{[this]
-	(ctx::ctx *const &)
+	(ctx::ctx *const &) noexcept
 	{
 		this->interrupt();
 	}};

ircd/resource.cc

@@ -256,7 +256,8 @@ const
 	char allow_methods_buf[48];
 	const string_view &allow_methods
 	{
-		method_list(allow_methods_buf, [&](const method &method)
+		method_list(allow_methods_buf, [&]
+		(const method &method) noexcept
 		{
 			return true;
 		})
@@ -281,7 +282,7 @@ ircd::resource::method_list(const mutable_buffer &buf)
 const
 {
 	return method_list(buf, []
-	(const method &)
+	(const method &) noexcept
 	{
 		return true;
 	});
@@ -474,7 +475,7 @@ noexcept
 		};
 
 	const ctx::uninterruptible::nothrow ui;
-	idle_dock.wait([this]
+	idle_dock.wait([this]() noexcept
 	{
 		return !stats || stats->pending == 0;
 	});

ircd/server.cc

@@ -637,7 +637,8 @@ try
 		return {};
 
 	parse::buffer pb{request.in.head};
-	parse::capstan pc{pb, [](char *&read, char *stop)
+	parse::capstan pc{pb, []
+	(char *&read, char *stop) noexcept
 	{
 		read = stop;
 	}};
@@ -670,7 +671,8 @@ try
 		return {};
 
 	parse::buffer pb{request.out.head};
-	parse::capstan pc{pb, [](char *&read, char *stop)
+	parse::capstan pc{pb, []
+	(char *&read, char *stop) noexcept
 	{
 		read = stop;
 	}};
@@ -759,7 +761,8 @@ ircd::server::peer::only_ipv6
 	{
 		{ "name",     "ircd.server.peer.ipv6.only" },
 		{ "default",  net::sock_opts::IGN          },
-	}, []
+	},
+	[]() noexcept
 	{
 		sock_opts.v6only = ssize_t(only_ipv6);
 	}
@@ -771,7 +774,8 @@ ircd::server::peer::sock_nodelay
 	{
 		{ "name",     "ircd.server.peer.sock.nodelay" },
 		{ "default",  true                            },
-	}, []
+	},
+	[]() noexcept
 	{
 		sock_opts.nodelay = ssize_t(sock_nodelay);
 	}
@@ -783,7 +787,8 @@ ircd::server::peer::sock_read_bufsz
 	{
 		{ "name",     "ircd.server.peer.sock.read.bufsz" },
 		{ "default",  net::sock_opts::IGN                },
-	}, []
+	},
+	[]() noexcept
 	{
 		sock_opts.read_bufsz = ssize_t(sock_read_bufsz);
 	}
@@ -795,7 +800,8 @@ ircd::server::peer::sock_read_lowat
 	{
 		{ "name",     "ircd.server.peer.sock.read.lowat" },
 		{ "default",  net::sock_opts::IGN                },
-	}, []
+	},
+	[]() noexcept
 	{
 		sock_opts.read_lowat = ssize_t(sock_read_lowat);
 	}
@@ -807,7 +813,8 @@ ircd::server::peer::sock_write_bufsz
 	{
 		{ "name",     "ircd.server.peer.sock.write.bufsz" },
 		{ "default",  net::sock_opts::IGN                 },
-	}, []
+	},
+	[]() noexcept
 	{
 		sock_opts.write_bufsz = ssize_t(sock_write_bufsz);
 	}
@@ -819,7 +826,8 @@ ircd::server::peer::sock_write_lowat
 	{
 		{ "name",     "ircd.server.peer.sock.write.lowat" },
 		{ "default",  net::sock_opts::IGN                 },
-	}, []
+	},
+	[]() noexcept
 	{
 		sock_opts.write_lowat = ssize_t(sock_write_lowat);
 	}

ircd/tokens.cc

@@ -52,6 +52,7 @@ ircd::string_view
 ircd::tokens_before(const string_view &str,
                     const char sep,
                     const size_t i)
+noexcept
 {
 	assert(sep != '\0');
 	const char _sep[2]
@@ -66,6 +67,7 @@ ircd::string_view
 ircd::tokens_before(const string_view &str,
                     const string_view &sep,
                     const size_t i)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;
@@ -92,6 +94,7 @@ ircd::string_view
 ircd::tokens_after(const string_view &str,
                    const char sep,
                    const ssize_t i)
+noexcept
 {
 	assert(sep != '\0');
 	const char _sep[2]
@@ -106,6 +109,7 @@ ircd::string_view
 ircd::tokens_after(const string_view &str,
                    const string_view &sep,
                    const ssize_t i)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;
@@ -191,7 +195,7 @@ ircd::token(const string_view &str,
             const char sep,
             const size_t i,
             const string_view &def)
-try
+noexcept try
 {
 	return token(str, sep, i);
 }
@@ -205,7 +209,7 @@ ircd::token(const string_view &str,
             const string_view &sep,
             const size_t i,
             const string_view &def)
-try
+noexcept try
 {
 	return token(str, sep, i);
 }
@@ -254,6 +258,7 @@ bool
 ircd::token_exists(const string_view &str,
                    const char sep,
                    const string_view &tok)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;
@@ -272,6 +277,7 @@ bool
 ircd::token_exists(const string_view &str,
                    const string_view &sep,
                    const string_view &tok)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;
@@ -289,6 +295,7 @@ ircd::token_exists(const string_view &str,
 size_t
 ircd::token_count(const string_view &str,
                   const char sep)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;
@@ -306,6 +313,7 @@ ircd::token_count(const string_view &str,
 size_t
 ircd::token_count(const string_view &str,
                   const string_view &sep)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;
@@ -325,6 +333,7 @@ ircd::tokens(const string_view &str,
              const char sep_,
              const mutable_buffer &buf,
              const token_view &closure)
+noexcept
 {
 	assert(sep_ != '\0');
 	const char _sep[2]
@@ -345,6 +354,7 @@ ircd::tokens(const string_view &str,
              const string_view &sep,
              const mutable_buffer &buf,
              const token_view &closure)
+noexcept
 {
 	char *ptr(data(buf));
 	char *const stop(data(buf) + size(buf));
@@ -369,6 +379,7 @@ ircd::tokens(const string_view &str,
              const char sep,
              const size_t limit,
              const token_view &closure)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;
@@ -393,6 +404,7 @@ ircd::tokens(const string_view &str,
              const string_view &sep,
              const size_t limit,
              const token_view &closure)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;
@@ -416,6 +428,7 @@ bool
 ircd::tokens(const string_view &str,
              const char sep,
              const token_view &closure)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;
@@ -438,6 +451,7 @@ bool
 ircd::tokens(const string_view &str,
              const string_view &sep,
              const token_view &closure)
+noexcept
 {
 	using type = string_view;
 	using iter = typename type::const_iterator;

matrix/dbs_event_refs.cc

@@ -81,12 +81,12 @@ const ircd::db::prefix_transform
 ircd::m::dbs::desc::event_refs__pfx
 {
 	"_event_refs",
-	[](const string_view &key)
+	[](const string_view &key) noexcept
 	{
 		return size(key) >= sizeof(event::idx) * 2;
 	},
 
-	[](const string_view &key)
+	[](const string_view &key) noexcept
 	{
 		assert(size(key) >= sizeof(event::idx));
 		return string_view

matrix/event_horizon.cc

@@ -83,7 +83,7 @@ const
 {
 	size_t ret(0);
 	for_each([&ret]
-	(const auto &, const auto &)
+	(const auto &, const auto &) noexcept
 	{
 		++ret;
 		return true;
@@ -97,7 +97,7 @@ ircd::m::event::horizon::has(const event::idx &event_idx)
 const
 {
 	return !for_each([&event_idx]
-	(const auto &, const auto &_event_idx)
+	(const auto &, const auto &_event_idx) noexcept
 	{
 		// false to break; true to continue.
 		return _event_idx == event_idx? false : true;

matrix/fed_well_known.cc

@@ -117,7 +117,7 @@ ircd::m::fed::well_known::worker_context
 decltype(ircd::m::fed::well_known::handle_quit)
 ircd::m::fed::well_known::handle_quit
 {
-	run::level::QUIT, []
+	run::level::QUIT, []() noexcept
 	{
 		worker_dock.notify_all();
 	}
@@ -316,7 +316,7 @@ try
 	run::barrier<ctx::interrupted>{};
 	while(!request::list.empty() || run::level == run::level::RUN)
 	{
-		worker_dock.wait([]
+		worker_dock.wait([]() noexcept
 		{
 			return !request::list.empty() || run::level != run::level::RUN;
 		});

matrix/homeserver.cc

@@ -88,7 +88,7 @@ bool
 ircd::m::myself(const m::user::id &user_id)
 {
 	return !for_each([&user_id]
-	(const auto &homeserver)
+	(const auto &homeserver) noexcept
 	{
 		return homeserver.self != user_id;
 	});
@@ -581,7 +581,8 @@ const
 
 		bool dup{false}, exists{false};
 		if(!force)
-			get(key, [&exists, &dup, &val](const string_view &val_)
+			get(key, [&exists, &dup, &val]
+			(const string_view &val_) noexcept
 			{
 				exists = true;
 				dup = val == val_;

matrix/init_backfill.cc

@@ -290,7 +290,7 @@ try
 	// All rooms have been submitted to the pool but the pool workers might
 	// still be busy. If we unwind now the pool's dtor will kill the workers
 	// so we synchronize their completion here.
-	dock.wait([]
+	dock.wait([]() noexcept
 	{
 		return complete >= count;
 	});

matrix/node.cc

@@ -157,7 +157,7 @@ ircd::m::node::mitsein::has(const m::node &other,
 const
 {
 	return !for_each(other, membership, []
-	(const auto &, const auto &)
+	(const auto &, const auto &) noexcept
 	{
 		return false;
 	});
@@ -170,7 +170,7 @@ const
 {
 	size_t ret(0);
 	for_each(other, membership, [&ret]
-	(const auto &, const auto &)
+	(const auto &, const auto &) noexcept
 	{
 		++ret;
 		return true;

matrix/room.cc

@@ -791,7 +791,7 @@ ircd::m::contains(const id::room &room_id,
                   const event::idx &event_idx)
 {
 	return m::query(event_idx, "room_id", [&room_id]
-	(const string_view &_room_id) -> bool
+	(const string_view &_room_id) noexcept -> bool
 	{
 		return _room_id == room_id;
 	});
@@ -1088,7 +1088,7 @@ const
 {
 	size_t ret(0);
 	for_each(event::closure_idx_bool{[&ret]
-	(const event::idx &event_idx)
+	(const event::idx &event_idx) noexcept
 	{
 		++ret;
 		return true;
@@ -1103,7 +1103,7 @@ const
 {
 	size_t ret(0);
 	for_each(type, event::closure_idx_bool{[&ret]
-	(const event::idx &event_idx)
+	(const event::idx &event_idx) noexcept
 	{
 		++ret;
 		return true;
@@ -1122,7 +1122,7 @@ const
 	(const event::idx &event_idx)
 	{
 		ret += query(std::nothrow, event_idx, "state_key", [&state_key]
-		(const string_view &_state_key) -> bool
+		(const string_view &_state_key) noexcept -> bool
 		{
 			return state_key == _state_key;
 		});
@@ -1201,7 +1201,7 @@ const
 {
 	event::idx ret{0};
 	for_each(type, event::closure_idx_bool{[&ret]
-	(const event::idx &event_idx)
+	(const event::idx &event_idx) noexcept
 	{
 		ret = event_idx;
 		return false;

matrix/typing.cc

@@ -105,7 +105,7 @@ try
 {
 	for(;; ctx::sleep(milliseconds(timeout_int)))
 	{
-		dock.wait([]
+		dock.wait([]() noexcept
 		{
 			return !typists.empty();
 		});

matrix/user_tokens.cc

@@ -45,7 +45,7 @@ const
 
 	const auto match
 	{
-		[this](const string_view &sender)
+		[this](const string_view &sender) noexcept
 		{
 			return sender == this->user.user_id;
 		}
@@ -90,7 +90,7 @@ const
 	};
 
 	return event_idx && m::query(std::nothrow, event_idx, "sender", [this]
-	(const string_view &sender)
+	(const string_view &sender) noexcept
 	{
 		return sender == this->user.user_id;
 	});
@@ -120,7 +120,7 @@ const
 	{
 		const auto match
 		{
-			[this](const string_view &sender)
+			[this](const string_view &sender) noexcept
 			{
 				return sender == this->user.user_id;
 			}

matrix/vm.cc

@@ -66,7 +66,7 @@ noexcept
 			sequence::pending,
 		};
 
-	vm::dock.wait([]
+	vm::dock.wait([]() noexcept
 	{
 		return !eval::executing && !eval::injecting;
 	});
@@ -81,7 +81,7 @@ noexcept
 			sequence::uncommitted,
 		};
 
-	sequence::dock.wait([]
+	sequence::dock.wait([]() noexcept
 	{
 		return !sequence::pending;
 	});

matrix/vm_eval.cc

@@ -153,7 +153,7 @@ noexcept
 {
 	eval *ret {nullptr};
 	eval::for_each(&c, [&ret, &a]
-	(eval &eval)
+	(eval &eval) noexcept
 	{
 		const bool cond
 		{
@@ -377,7 +377,8 @@ ircd::m::vm::eval *
 ircd::m::vm::eval::find(const event::id &event_id)
 {
 	eval *ret{nullptr};
-	for_each([&event_id, &ret](eval &e)
+	for_each([&event_id, &ret]
+	(eval &e) noexcept
 	{
 		if(e.event_)
 			if(e.event_->event_id == event_id)
@@ -393,7 +394,8 @@ size_t
 ircd::m::vm::eval::count(const event::id &event_id)
 {
 	size_t ret(0);
-	for_each([&event_id, &ret](eval &e)
+	for_each([&event_id, &ret]
+	(eval &e) noexcept
 	{
 		if(e.event_)
 			if(e.event_->event_id == event_id)
@@ -410,7 +412,7 @@ ircd::m::vm::eval::find_pdu(const event::id &event_id)
 {
 	const m::event *ret{nullptr};
 	for_each_pdu([&ret, &event_id]
-	(const m::event &event)
+	(const m::event &event) noexcept
 	{
 		if(event.event_id != event_id)
 			return true;

matrix/vm_inject.cc

@@ -250,7 +250,7 @@ ircd::m::vm::inject(eval &eval,
 	{
 		event, opts.prop_mask.has("depth") && !event.has("depth"),
 		{
-			"depth", [&depth]
+			"depth", [&depth]() noexcept
 			{
 				// When the depth value is undefined_number it was intended
 				// that no depth should appear in the event JSON so that value

modules/client/events.cc

@@ -194,7 +194,7 @@ get__events(client &client,
 		)
 	};
 
-	dock.wait_for(timeout, [&event, &eid]
+	dock.wait_for(timeout, [&event, &eid]() noexcept
 	{
 		return !empty(event) && !empty(eid);
 	});

modules/client/profile.cc

@@ -104,7 +104,7 @@ put__profile(client &client,
 
 	bool modified{true};
 	profile.get(std::nothrow, param, [&value, &modified]
-	(const string_view &param, const string_view &existing)
+	(const string_view &param, const string_view &existing) noexcept
 	{
 		modified = existing != value;
 	});
@@ -202,7 +202,7 @@ get__profile(client &client,
 	const bool empty
 	{
 		profile.for_each([]
-		(const string_view &, const string_view &)
+		(const string_view &, const string_view &) noexcept
 		{
 			return false;
 		})

modules/client/rooms/send.cc

@@ -279,7 +279,7 @@ check_transaction_id(const m::user::id &user_id,
 {
 	static const auto type_match
 	{
-		[](const string_view &type)
+		[](const string_view &type) noexcept
 		{
 			return type == "ircd.client.txnid";
 		}

modules/client/sync.cc

@@ -43,7 +43,9 @@ namespace ircd::m::sync::longpoll
 ircd::mapi::header
 IRCD_MODULE
 {
-	"Client 6.2.1 :Sync", nullptr, []
+	"Client 6.2.1 :Sync",
+	nullptr,
+	[]() noexcept
 	{
 		ircd::m::sync::longpoll::fini();
 	}
@@ -635,7 +637,7 @@ catch(const std::exception &e)
 int
 ircd::m::sync::longpoll::poll(data &data)
 {
-	const auto ready{[&data]
+	const auto ready{[&data]() noexcept
 	{
 		assert(data.range.second <= m::vm::sequence::retired + 1);
 		return data.range.second <= m::vm::sequence::retired;

modules/console.cc

@@ -574,7 +574,7 @@ console_cmd__restart(opt &out, const string_view &line)
 
 	size_t swargs(0), posargs(0);
 	ircd::tokens(line, ' ', [&swargs, &posargs]
-	(const auto &token)
+	(const string_view &token)
 	{
 		swargs += startswith(token, '-');
 		posargs += !startswith(token, '-');
@@ -1871,6 +1871,7 @@ console_cmd__ios__depth(opt &out, const string_view &line)
 	{
 		started = ios::epoch();
 		ios::dispatch(dispatch_desc, ios::yield, [&executed]
+		() noexcept
 		{
 			executed = ios::epoch();
 		});
@@ -1888,6 +1889,7 @@ console_cmd__ios__depth(opt &out, const string_view &line)
 	{
 		started = ios::epoch();
 		ios::dispatch(post_desc, ios::defer, ios::yield, [&executed]
+		() noexcept
 		{
 			executed = ios::epoch();
 		});
@@ -1905,6 +1907,7 @@ console_cmd__ios__depth(opt &out, const string_view &line)
 	{
 		started = ios::epoch();
 		ios::dispatch(defer_desc, ios::defer, ios::yield, [&executed]
+		() noexcept
 		{
 			executed = ios::epoch();
 		});
@@ -1980,6 +1983,7 @@ console_cmd__ios__latency(opt &out, const string_view &line)
 		asm volatile ("lfence");
 
 		ios::dispatch(dispatch_desc, ios::yield, [&executed]
+		() noexcept
 		{
 			__sync_synchronize();
 			asm volatile ("lfence");
@@ -2010,6 +2014,7 @@ console_cmd__ios__latency(opt &out, const string_view &line)
 		asm volatile ("lfence");
 
 		ios::dispatch(post_desc, ios::defer, ios::yield, [&executed]
+		() noexcept
 		{
 			__sync_synchronize();
 			asm volatile ("lfence");
@@ -2040,6 +2045,7 @@ console_cmd__ios__latency(opt &out, const string_view &line)
 		asm volatile ("lfence");
 
 		ios::dispatch(defer_desc, ios::defer, ios::yield, [&executed]
+		() noexcept
 		{
 			__sync_synchronize();
 			asm volatile ("lfence");
@@ -4776,7 +4782,7 @@ console_cmd__db__sst__scan__count(opt &out, const string_view &line)
 	db::database::sst::scan
 	{
 		database, path, [&out, &i]
-		(const auto &key, const auto &val)
+		(const auto &key, const auto &val) noexcept
 		{
 			++i;
 			return true;
@@ -6359,7 +6365,7 @@ console_cmd__net__host(opt &out, const string_view &line)
 		net::dns::resolve(hostport, opts, cbarr);
 
 	const ctx::uninterruptible ui;
-	dock.wait([&done]
+	dock.wait([&done]() noexcept
 	{
 		return done;
 	});
@@ -7787,7 +7793,7 @@ console_cmd__events__type__counts(opt &out, const string_view &line)
 	{
 		size_t i(0);
 		m::events::type::for_each_in(type, [&i]
-		(const string_view &type, const m::event::idx &event_idx)
+		(const string_view &type, const m::event::idx &event_idx) noexcept
 		{
 			++i;
 			return true;
@@ -10052,7 +10058,7 @@ console_cmd__room__members__origin(opt &out, const string_view &line)
 		const bool same_origin
 		{
 			m::query(std::nothrow, event_idx, "origin", [&origin]
-			(const auto &_origin)
+			(const auto &_origin) noexcept
 			{
 				return _origin == origin;
 			})
@@ -11572,6 +11578,7 @@ console_cmd__room__type__count(opt &out, const string_view &line)
 	size_t ret(0);
 	events.for_each([&ret]
 	(const string_view &type, const uint64_t &depth, const m::event::idx &event_idx)
+	noexcept
 	{
 		++ret;
 		return true;
@@ -12940,7 +12947,8 @@ console_cmd__user__read__count(opt &out, const string_view &line)
 
 	size_t count {0};
 	space.for_each("ircd.read", room_id, [&out, &count]
-	(const auto &type, const auto &state_key, const auto &depth, const auto &event_idx) -> bool
+	(const auto &type, const auto &state_key, const auto &depth, const auto &event_idx)
+	noexcept -> bool
 	{
 		++count;
 		return true;

modules/federation/make_join.cc

@@ -101,7 +101,7 @@ get__make_join(client &client,
 	const bool version_mismatch
 	{
 		request.query.for_each("ver", [&room_version]
-		(const auto &val)
+		(const auto &val) noexcept
 		{
 			return val.second != room_version;
 		})

modules/federation/send.cc

@@ -224,7 +224,7 @@ handle_put(client &client,
 	size_t evals{0};
 	bool txn_in_progress{false};
 	m::vm::eval::for_each([&txn_id, &request, &evals, &txn_in_progress]
-	(const auto &eval)
+	(const auto &eval) noexcept
 	{
 		assert(eval.opts);
 		const bool match_node

modules/federation/sender.cc

@@ -180,7 +180,7 @@ send_worker()
 {
 	while(1) try
 	{
-		notified_dock.wait([]
+		notified_dock.wait([]() noexcept
 		{
 			return !notified_queue.empty();
 		});
@@ -503,7 +503,7 @@ recv_worker()
 {
 	while(1)
 	{
-		recv_action.wait([]
+		recv_action.wait([]() noexcept
 		{
 			return !txns.empty();
 		});

modules/federation/user_keys_claim.cc

@@ -84,7 +84,7 @@ post__user_keys_claim(client &client,
 			const json::string &algorithm{algorithm_};
 			const json::string &device_id{device_id_};
 			const auto match{[&device_id]
-			(const string_view &state_key)
+			(const string_view &state_key) noexcept
 			{
 				return state_key == device_id;
 			}};

modules/m_bridge.cc

@@ -211,7 +211,7 @@ try
 
 	auto since {vm::sequence::retired}; do
     {
-		worker_dock.wait([&since]
+		worker_dock.wait([&since]() noexcept
 		{
 			return since < vm::sequence::retired;
 		});

modules/m_command.cc

@@ -566,7 +566,7 @@ command__read(const mutable_buffer &buf,
 
 		// return true if the expression is not matched for this room.
 		const auto without_match{[&match]
-		(const string_view &key, const json::object &object)
+		(const string_view &key, const json::object &object) noexcept
 		{
 			return !match(key);
 		}};

modules/m_listen.cc

@@ -241,12 +241,12 @@ _listener_allow
 	{
 		while(1)
 		{
-			client::dock.wait([]
+			client::dock.wait([]() noexcept
 			{
 				return !client::pool.avail();
 			});
 
-			client::dock.wait([]
+			client::dock.wait([]() noexcept
 			{
 				if(!client::pool.avail())
 					return false;

modules/net_dns_cache.cc

@@ -65,7 +65,7 @@ ircd::net::dns::cache::fini()
 			waiting.size(),
 		};
 
-	dock.wait([]
+	dock.wait([]() noexcept
 	{
 		return waiting.empty();
 	});

modules/web_hook.cc

@@ -1419,7 +1419,7 @@ github_handle__status(std::ostream &out,
 
 		static const auto type_match
 		{
-			[](const string_view &type)
+			[](const string_view &type) noexcept
 			{
 				return type == "m.room.message";
 			}
@@ -1427,7 +1427,7 @@ github_handle__status(std::ostream &out,
 
 		const auto user_match
 		{
-			[&_webhook_user](const string_view &sender)
+			[&_webhook_user](const string_view &sender) noexcept
 			{
 				return sender && sender == _webhook_user;
 			}