diff --git a/Telegram/SourceFiles/api/api_invite_links.cpp b/Telegram/SourceFiles/api/api_invite_links.cpp
index 6d4415f67..cf14c9599 100644
--- a/Telegram/SourceFiles/api/api_invite_links.cpp
+++ b/Telegram/SourceFiles/api/api_invite_links.cpp
@@ -51,7 +51,7 @@ JoinedByLinkSlice ParseJoinedByLinkSlice(
 		owner.processUsers(data.vusers());
 		result.count = data.vcount().v;
 		result.users.reserve(data.vimporters().v.size());
-		for (const auto importer : data.vimporters().v) {
+		for (const auto &importer : data.vimporters().v) {
 			importer.match([&](const MTPDchatInviteImporter &data) {
 				result.users.push_back({
 					.user = owner.user(data.vuser_id().v),
diff --git a/Telegram/SourceFiles/api/api_updates.cpp b/Telegram/SourceFiles/api/api_updates.cpp
index 69dce85e9..242fe5f14 100644
--- a/Telegram/SourceFiles/api/api_updates.cpp
+++ b/Telegram/SourceFiles/api/api_updates.cpp
@@ -242,7 +242,7 @@ Updates::Updates(not_null<Main::Session*> session)
 	}) | rpl::start_with_next([=](not_null<PeerData*> peer) {
 		if (const auto list = _pendingSpeakingCallParticipants.take(peer)) {
 			if (const auto call = peer->groupCall()) {
-				for (const auto [participantPeerId, when] : *list) {
+				for (const auto &[participantPeerId, when] : *list) {
 					call->applyActiveUpdate(
 						participantPeerId,
 						Data::LastSpokeTimes{
diff --git a/Telegram/SourceFiles/apiwrap.cpp b/Telegram/SourceFiles/apiwrap.cpp
index 267b74d0c..e465ec4bc 100644
--- a/Telegram/SourceFiles/apiwrap.cpp
+++ b/Telegram/SourceFiles/apiwrap.cpp
@@ -525,7 +525,7 @@ void ApiWrap::sendMessageFail(
 			link)));
 	} else if (error.type().startsWith(qstr("SLOWMODE_WAIT_"))) {
 		const auto chop = qstr("SLOWMODE_WAIT_").size();
-		const auto left = error.type().mid(chop).toInt();
+		const auto left = error.type().midRef(chop).toInt();
 		if (const auto channel = peer->asChannel()) {
 			const auto seconds = channel->slowmodeSeconds();
 			if (seconds >= left) {
diff --git a/Telegram/SourceFiles/boxes/auto_download_box.cpp b/Telegram/SourceFiles/boxes/auto_download_box.cpp
index 036513a32..85e0e5fd5 100644
--- a/Telegram/SourceFiles/boxes/auto_download_box.cpp
+++ b/Telegram/SourceFiles/boxes/auto_download_box.cpp
@@ -191,7 +191,7 @@ void AutoDownloadBox::setupContent() {
 		});
 
 		if (changed) {
-			for (const auto [type, enabled] : values) {
+			for (const auto &[type, enabled] : values) {
 				const auto value = enabled ? limitByType(type) : 0;
 				settings->setBytesLimit(_source, type, value);
 			}
diff --git a/Telegram/SourceFiles/boxes/connection_box.cpp b/Telegram/SourceFiles/boxes/connection_box.cpp
index 8b2e3a6f7..7423a3715 100644
--- a/Telegram/SourceFiles/boxes/connection_box.cpp
+++ b/Telegram/SourceFiles/boxes/connection_box.cpp
@@ -896,7 +896,7 @@ void ProxyBox::setupTypes() {
 		{ Type::Socks5, "SOCKS5" },
 		{ Type::Mtproto, "MTPROTO" },
 	};
-	for (const auto [type, label] : types) {
+	for (const auto &[type, label] : types) {
 		_content->add(
 			object_ptr<Ui::Radioenum<Type>>(
 				_content,
diff --git a/Telegram/SourceFiles/boxes/passcode_box.cpp b/Telegram/SourceFiles/boxes/passcode_box.cpp
index 77cfa62fe..10c0f49b4 100644
--- a/Telegram/SourceFiles/boxes/passcode_box.cpp
+++ b/Telegram/SourceFiles/boxes/passcode_box.cpp
@@ -405,7 +405,7 @@ void PasscodeBox::setPasswordFail(
 		const MTP::Error &error) {
 	const auto prefix = qstr("EMAIL_UNCONFIRMED_");
 	if (error.type().startsWith(prefix)) {
-		const auto codeLength = error.type().mid(prefix.size()).toInt();
+		const auto codeLength = error.type().midRef(prefix.size()).toInt();
 
 		closeReplacedBy();
 		_setRequest = 0;
diff --git a/Telegram/SourceFiles/calls/calls_group_call.cpp b/Telegram/SourceFiles/calls/calls_group_call.cpp
index 0e94602f0..b38670d4d 100644
--- a/Telegram/SourceFiles/calls/calls_group_call.cpp
+++ b/Telegram/SourceFiles/calls/calls_group_call.cpp
@@ -431,7 +431,7 @@ void GroupCall::rejoin(not_null<PeerData*> as) {
 	_instance->emitJoinPayload([=](tgcalls::GroupJoinPayload payload) {
 		crl::on_main(weak, [=, payload = std::move(payload)]{
 			auto fingerprints = QJsonArray();
-			for (const auto print : payload.fingerprints) {
+			for (const auto &print : payload.fingerprints) {
 				auto object = QJsonObject();
 				object.insert("hash", QString::fromStdString(print.hash));
 				object.insert("setup", QString::fromStdString(print.setup));
diff --git a/Telegram/SourceFiles/calls/calls_group_members.cpp b/Telegram/SourceFiles/calls/calls_group_members.cpp
index 64cbd9abe..2bba752fc 100644
--- a/Telegram/SourceFiles/calls/calls_group_members.cpp
+++ b/Telegram/SourceFiles/calls/calls_group_members.cpp
@@ -852,7 +852,7 @@ MembersController::MembersController(
 		if (!(hide && _soundingAnimationHideLastTime)) {
 			_soundingAnimationHideLastTime = hide ? crl::now() : 0;
 		}
-		for (const auto [_, row] : _soundingRowBySsrc) {
+		for (const auto &[_, row] : _soundingRowBySsrc) {
 			if (hide) {
 				updateRowLevel(row, 0.);
 			}
@@ -870,7 +870,7 @@ MembersController::MembersController(
 			_soundingAnimation.stop();
 			return false;
 		}
-		for (const auto [ssrc, row] : _soundingRowBySsrc) {
+		for (const auto &[ssrc, row] : _soundingRowBySsrc) {
 			row->updateBlobAnimation(now);
 			delegate()->peerListUpdateRow(row);
 		}
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_dice_pack.cpp b/Telegram/SourceFiles/chat_helpers/stickers_dice_pack.cpp
index 9e4605dcb..bd9120551 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_dice_pack.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers_dice_pack.cpp
@@ -75,7 +75,7 @@ void DicePack::applySet(const MTPDmessages_stickerSet &data) {
 	if (isSlotMachine) {
 		return;
 	}
-	for (const auto pack : data.vpacks().v) {
+	for (const auto &pack : data.vpacks().v) {
 		pack.match([&](const MTPDstickerPack &data) {
 			const auto emoji = qs(data.vemoticon());
 			if (emoji.isEmpty()) {
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
index 01c195aa2..547890288 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
@@ -2551,7 +2551,7 @@ auto StickersListWidget::collectRecentStickers() -> std::vector<Sticker> {
 	};
 
 	if (cloudCount > 0) {
-		for (const auto document : cloudIt->second->stickers) {
+		for (const auto document : std::as_const(cloudIt->second->stickers)) {
 			add(document, false);
 		}
 	}
@@ -2559,7 +2559,7 @@ auto StickersListWidget::collectRecentStickers() -> std::vector<Sticker> {
 		add(recentSticker.first, false);
 	}
 	if (customCount > 0) {
-		for (const auto document : customIt->second->stickers) {
+		for (const auto document : std::as_const(customIt->second->stickers)) {
 			add(document, true);
 		}
 	}
diff --git a/Telegram/SourceFiles/core/launcher.cpp b/Telegram/SourceFiles/core/launcher.cpp
index 3ab874538..eefb05b28 100644
--- a/Telegram/SourceFiles/core/launcher.cpp
+++ b/Telegram/SourceFiles/core/launcher.cpp
@@ -463,7 +463,7 @@ void Launcher::processArguments() {
 	auto parseResult = QMap<QByteArray, QStringList>();
 	auto parsingKey = QByteArray();
 	auto parsingFormat = KeyFormat::NoValues;
-	for (const auto &argument : _arguments) {
+	for (const auto &argument : std::as_const(_arguments)) {
 		switch (parsingFormat) {
 		case KeyFormat::OneValue: {
 			parseResult[parsingKey] = QStringList(argument.mid(0, 8192));
diff --git a/Telegram/SourceFiles/core/sandbox.cpp b/Telegram/SourceFiles/core/sandbox.cpp
index 0ac205e2e..39cbf01fe 100644
--- a/Telegram/SourceFiles/core/sandbox.cpp
+++ b/Telegram/SourceFiles/core/sandbox.cpp
@@ -259,7 +259,7 @@ void Sandbox::socketReading() {
 	}
 	_localSocketReadData.append(_localSocket.readAll());
 	if (QRegularExpression("RES:(\\d+);").match(_localSocketReadData).hasMatch()) {
-		uint64 pid = _localSocketReadData.mid(4, _localSocketReadData.length() - 5).toULongLong();
+		uint64 pid = _localSocketReadData.midRef(4, _localSocketReadData.length() - 5).toULongLong();
 		if (pid != kEmptyPidForCommandResponse) {
 			psActivateProcess(pid);
 		}
diff --git a/Telegram/SourceFiles/core/update_checker.cpp b/Telegram/SourceFiles/core/update_checker.cpp
index df1d66277..90fcb54b3 100644
--- a/Telegram/SourceFiles/core/update_checker.cpp
+++ b/Telegram/SourceFiles/core/update_checker.cpp
@@ -830,7 +830,7 @@ void HttpLoaderActor::sendRequest() {
 
 void HttpLoaderActor::gotMetaData() {
 	const auto pairs = _reply->rawHeaderPairs();
-	for (const auto pair : pairs) {
+	for (const auto &pair : pairs) {
 		if (QString::fromUtf8(pair.first).toLower() == "content-range") {
 			const auto m = QRegularExpression(qsl("/(\\d+)([^\\d]|$)")).match(QString::fromUtf8(pair.second));
 			if (m.hasMatch()) {
@@ -979,7 +979,7 @@ auto MtpChecker::parseText(const QByteArray &text) const
 			return false;
 		}
 		bestLocation.username = full.mid(start + 1, post - start - 1);
-		bestLocation.postId = full.mid(post + 1).toInt();
+		bestLocation.postId = full.midRef(post + 1).toInt();
 		if (bestLocation.username.isEmpty() || !bestLocation.postId) {
 			LOG(("Update Error: MTP entry '%1' is bad for version %2."
 				).arg(full
diff --git a/Telegram/SourceFiles/data/data_group_call.cpp b/Telegram/SourceFiles/data/data_group_call.cpp
index 902126003..c2bdd8c0b 100644
--- a/Telegram/SourceFiles/data/data_group_call.cpp
+++ b/Telegram/SourceFiles/data/data_group_call.cpp
@@ -511,12 +511,12 @@ void GroupCall::requestUnknownParticipants() {
 	}();
 	auto ssrcInputs = QVector<MTPint>();
 	ssrcInputs.reserve(ssrcs.size());
-	for (const auto [ssrc, when] : ssrcs) {
+	for (const auto &[ssrc, when] : ssrcs) {
 		ssrcInputs.push_back(MTP_int(ssrc));
 	}
 	auto peerInputs = QVector<MTPInputPeer>();
 	peerInputs.reserve(participantPeerIds.size());
-	for (const auto [participantPeerId, when] : participantPeerIds) {
+	for (const auto &[participantPeerId, when] : participantPeerIds) {
 		if (const auto userId = peerToUser(participantPeerId)) {
 			peerInputs.push_back(
 				MTP_inputPeerUser(MTP_int(userId), MTP_long(0)));
@@ -544,13 +544,13 @@ void GroupCall::requestUnknownParticipants() {
 		});
 		_unknownParticipantPeersRequestId = 0;
 		const auto now = crl::now();
-		for (const auto [ssrc, when] : ssrcs) {
+		for (const auto &[ssrc, when] : ssrcs) {
 			if (when.voice || when.anything) {
 				applyLastSpoke(ssrc, when, now);
 			}
 			_unknownSpokenSsrcs.remove(ssrc);
 		}
-		for (const auto [id, when] : participantPeerIds) {
+		for (const auto &[id, when] : participantPeerIds) {
 			if (const auto participantPeer = _peer->owner().peerLoaded(id)) {
 				const auto isParticipant = ranges::contains(
 					_participants,
@@ -565,10 +565,10 @@ void GroupCall::requestUnknownParticipants() {
 		requestUnknownParticipants();
 	}).fail([=](const MTP::Error &error) {
 		_unknownParticipantPeersRequestId = 0;
-		for (const auto [ssrc, when] : ssrcs) {
+		for (const auto &[ssrc, when] : ssrcs) {
 			_unknownSpokenSsrcs.remove(ssrc);
 		}
-		for (const auto [participantPeerId, when] : participantPeerIds) {
+		for (const auto &[participantPeerId, when] : participantPeerIds) {
 			_unknownSpokenPeerIds.remove(participantPeerId);
 		}
 		requestUnknownParticipants();
diff --git a/Telegram/SourceFiles/data/data_session.cpp b/Telegram/SourceFiles/data/data_session.cpp
index 84b3bf328..45f5b24a8 100644
--- a/Telegram/SourceFiles/data/data_session.cpp
+++ b/Telegram/SourceFiles/data/data_session.cpp
@@ -1896,7 +1896,7 @@ void Session::processMessages(
 		const auto id = IdFromMessage(message);
 		indices.emplace((uint64(uint32(id)) << 32) | uint64(i), i);
 	}
-	for (const auto [position, index] : indices) {
+	for (const auto &[position, index] : indices) {
 		addNewMessage(
 			data[index],
 			MTPDmessage_ClientFlags(),
diff --git a/Telegram/SourceFiles/data/stickers/data_stickers.cpp b/Telegram/SourceFiles/data/stickers/data_stickers.cpp
index 1cdc60400..08ab4fa47 100644
--- a/Telegram/SourceFiles/data/stickers/data_stickers.cpp
+++ b/Telegram/SourceFiles/data/stickers/data_stickers.cpp
@@ -420,7 +420,7 @@ bool Stickers::isFaved(not_null<const DocumentData*> document) {
 	if (it == sets.cend()) {
 		return false;
 	}
-	for (const auto sticker : it->second->stickers) {
+	for (const auto sticker : std::as_const(it->second->stickers)) {
 		if (sticker == document) {
 			return true;
 		}
@@ -902,7 +902,7 @@ void Stickers::featuredSetsReceived(
 
 	if (!setsToRequest.empty()) {
 		auto &api = session().api();
-		for (const auto [setId, accessHash] : setsToRequest) {
+		for (const auto &[setId, accessHash] : setsToRequest) {
 			api.scheduleStickerSetRequest(setId, accessHash);
 		}
 		api.requestStickerSets();
diff --git a/Telegram/SourceFiles/dialogs/dialogs_indexed_list.cpp b/Telegram/SourceFiles/dialogs/dialogs_indexed_list.cpp
index 19a4957d1..25e732ef8 100644
--- a/Telegram/SourceFiles/dialogs/dialogs_indexed_list.cpp
+++ b/Telegram/SourceFiles/dialogs/dialogs_indexed_list.cpp
@@ -54,7 +54,7 @@ Row *IndexedList::addByName(Key key) {
 
 void IndexedList::adjustByDate(const RowsByLetter &links) {
 	_list.adjustByDate(links.main);
-	for (const auto [ch, row] : links.letters) {
+	for (const auto &[ch, row] : links.letters) {
 		if (auto it = _index.find(ch); it != _index.cend()) {
 			it->second.adjustByDate(row);
 		}
diff --git a/Telegram/SourceFiles/export/output/export_output_html.cpp b/Telegram/SourceFiles/export/output/export_output_html.cpp
index fe87118ba..a8bc27cdb 100644
--- a/Telegram/SourceFiles/export/output/export_output_html.cpp
+++ b/Telegram/SourceFiles/export/output/export_output_html.cpp
@@ -804,7 +804,7 @@ QByteArray HtmlWriter::Wrap::pushGenericListEntry(
 		result.append(SerializeString(subname));
 		result.append(popTag());
 	}
-	for (const auto detail : details) {
+	for (const auto &detail : details) {
 		result.append(pushDiv("details_entry details"));
 		result.append(SerializeString(detail));
 		result.append(popTag());
diff --git a/Telegram/SourceFiles/export/view/export_view_panel_controller.cpp b/Telegram/SourceFiles/export/view/export_view_panel_controller.cpp
index 667564f72..9d5244fd4 100644
--- a/Telegram/SourceFiles/export/view/export_view_panel_controller.cpp
+++ b/Telegram/SourceFiles/export/view/export_view_panel_controller.cpp
@@ -215,7 +215,7 @@ void PanelController::showError(const ApiErrorState &error) {
 	if (error.data.type() == qstr("TAKEOUT_INVALID")) {
 		showError(tr::lng_export_invalid(tr::now));
 	} else if (error.data.type().startsWith(qstr("TAKEOUT_INIT_DELAY_"))) {
-		const auto seconds = std::max(error.data.type().mid(
+		const auto seconds = std::max(error.data.type().midRef(
 			qstr("TAKEOUT_INIT_DELAY_").size()).toInt(), 1);
 		const auto now = QDateTime::currentDateTime();
 		const auto when = now.addSecs(seconds);
diff --git a/Telegram/SourceFiles/history/history_item_components.cpp b/Telegram/SourceFiles/history/history_item_components.cpp
index 41281d1c7..ccd3c3261 100644
--- a/Telegram/SourceFiles/history/history_item_components.cpp
+++ b/Telegram/SourceFiles/history/history_item_components.cpp
@@ -757,7 +757,7 @@ bool ReplyKeyboard::selectedAnimationCallback(crl::time now) {
 }
 
 void ReplyKeyboard::clearSelection() {
-	for (const auto [relativeIndex, time] : _animations) {
+	for (const auto &[relativeIndex, time] : _animations) {
 		const auto index = std::abs(relativeIndex) - 1;
 		const auto row = (index / MatrixRowShift);
 		const auto col = index % MatrixRowShift;
diff --git a/Telegram/SourceFiles/history/view/history_view_list_widget.cpp b/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
index 26048ee5b..f5be86cad 100644
--- a/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
@@ -1642,7 +1642,7 @@ TextForMimeData ListWidget::getSelectedText() const {
 		wrapItem(group->items.back(), HistoryGroupText(group));
 	};
 
-	for (const auto [itemId, data] : selected) {
+	for (const auto &[itemId, data] : selected) {
 		if (const auto item = session().data().message(itemId)) {
 			if (const auto group = session().data().groups().find(item)) {
 				if (groups.contains(group)) {
diff --git a/Telegram/SourceFiles/history/view/history_view_send_action.cpp b/Telegram/SourceFiles/history/view/history_view_send_action.cpp
index 37869dd3c..a9a3c2eb0 100644
--- a/Telegram/SourceFiles/history/view/history_view_send_action.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_send_action.cpp
@@ -232,7 +232,7 @@ bool SendActionPainter::updateNeedsAnimating(crl::time now, bool force) {
 				};
 				return QString();
 			};
-			for (const auto [user, action] : _sendActions) {
+			for (const auto &[user, action] : _sendActions) {
 				newTypingString = sendActionString(
 					action.type,
 					_history->peer->isUser() ? QString() : user->firstName);
diff --git a/Telegram/SourceFiles/intro/intro_widget.cpp b/Telegram/SourceFiles/intro/intro_widget.cpp
index 259125d4a..60069279b 100644
--- a/Telegram/SourceFiles/intro/intro_widget.cpp
+++ b/Telegram/SourceFiles/intro/intro_widget.cpp
@@ -496,7 +496,7 @@ void Widget::resetAccount() {
 
 			const auto &type = error.type();
 			if (type.startsWith(qstr("2FA_CONFIRM_WAIT_"))) {
-				const auto seconds = type.mid(qstr("2FA_CONFIRM_WAIT_").size()).toInt();
+				const auto seconds = type.midRef(qstr("2FA_CONFIRM_WAIT_").size()).toInt();
 				const auto days = (seconds + 59) / 86400;
 				const auto hours = ((seconds + 59) % 86400) / 3600;
 				const auto minutes = ((seconds + 59) % 3600) / 60;
diff --git a/Telegram/SourceFiles/mtproto/mtp_instance.cpp b/Telegram/SourceFiles/mtproto/mtp_instance.cpp
index 8a781c2a9..c7007e5ae 100644
--- a/Telegram/SourceFiles/mtproto/mtp_instance.cpp
+++ b/Telegram/SourceFiles/mtproto/mtp_instance.cpp
@@ -384,7 +384,7 @@ void Instance::Private::applyDomainIps(
 			return true;
 		}
 		current.erase(i, end(current));
-		for (const auto &ip : copy) {
+		for (const auto &ip : std::as_const(copy)) {
 			proxy.resolvedIPs.push_back(ip);
 		}
 		return true;
diff --git a/Telegram/SourceFiles/overview/overview_layout.cpp b/Telegram/SourceFiles/overview/overview_layout.cpp
index ef0d0c5a0..402bdcf7a 100644
--- a/Telegram/SourceFiles/overview/overview_layout.cpp
+++ b/Telegram/SourceFiles/overview/overview_layout.cpp
@@ -1579,7 +1579,7 @@ void Link::initDimensions() {
 int32 Link::resizeGetHeight(int32 width) {
 	_width = qMin(width, _maxw);
 	int32 w = _width - st::linksPhotoSize - st::linksPhotoPadding;
-	for (const auto &link : _links) {
+	for (const auto &link : std::as_const(_links)) {
 		link.lnk->setFullDisplayed(w >= link.width);
 	}
 
@@ -1634,7 +1634,7 @@ void Link::paint(Painter &p, const QRect &clip, TextSelection selection, const P
 	}
 
 	p.setPen(st::windowActiveTextFg);
-	for (const auto &link : _links) {
+	for (const auto &link : std::as_const(_links)) {
 		if (clip.intersects(style::rtlrect(left, top, qMin(w, link.width), st::normalFont->height, _width))) {
 			p.setFont(ClickHandler::showAsActive(link.lnk) ? st::normalFont->underline() : st::normalFont);
 			p.drawTextLeft(left, top, _width, (w < link.width) ? st::normalFont->elided(link.text, w) : link.text);
diff --git a/Telegram/SourceFiles/passport/passport_form_controller.cpp b/Telegram/SourceFiles/passport/passport_form_controller.cpp
index 4e9beb873..64b08c271 100644
--- a/Telegram/SourceFiles/passport/passport_form_controller.cpp
+++ b/Telegram/SourceFiles/passport/passport_form_controller.cpp
@@ -1175,7 +1175,7 @@ void FormController::fillErrors() {
 			}
 		}
 	};
-	for (const auto &error : _form.pendingErrors) {
+	for (const auto &error : std::as_const(_form.pendingErrors)) {
 		error.match([&](const MTPDsecureValueError &data) {
 			if (const auto value = find(data.vtype())) {
 				if (CanHaveErrors(value->type)) {
@@ -1306,7 +1306,7 @@ void FormController::decryptValue(Value &value) const {
 		}
 		const auto fields = DeserializeData(decrypted);
 		value.data.parsed.fields.clear();
-		for (const auto [key, text] : fields) {
+		for (const auto &[key, text] : fields) {
 			value.data.parsed.fields[key] = { text };
 		}
 	}
diff --git a/Telegram/SourceFiles/passport/passport_panel_edit_document.cpp b/Telegram/SourceFiles/passport/passport_panel_edit_document.cpp
index a0385a216..75766ba28 100644
--- a/Telegram/SourceFiles/passport/passport_panel_edit_document.cpp
+++ b/Telegram/SourceFiles/passport/passport_panel_edit_document.cpp
@@ -558,7 +558,7 @@ void PanelEditDocument::updateCommonError() {
 
 void PanelEditDocument::focusInEvent(QFocusEvent *e) {
 	crl::on_main(this, [=] {
-		for (const auto [index, row] : _details) {
+		for (const auto &[index, row] : _details) {
 			if (row->setFocusFast()) {
 				return;
 			}
@@ -590,7 +590,7 @@ void PanelEditDocument::updateControlsGeometry() {
 
 PanelEditDocument::Result PanelEditDocument::collect() const {
 	auto result = Result();
-	for (const auto [i, field] : _details) {
+	for (const auto &[i, field] : _details) {
 		const auto &row = _scheme.rows[i];
 		auto &fields = (row.valueClass == Scheme::ValueClass::Scans)
 			? result.filesData
@@ -637,7 +637,7 @@ bool PanelEditDocument::validate() {
 		error = firsttop.y();
 	}
 	auto first = QPointer<PanelDetailsRow>();
-	for (const auto [i, field] : ranges::view::reverse(_details)) {
+	for (const auto &[i, field] : ranges::view::reverse(_details)) {
 		const auto &row = _scheme.rows[i];
 		if (row.valueClass == Scheme::ValueClass::Additional
 			&& !_additionalShown) {
diff --git a/Telegram/SourceFiles/storage/file_download_web.cpp b/Telegram/SourceFiles/storage/file_download_web.cpp
index 3a963dc25..8b173b877 100644
--- a/Telegram/SourceFiles/storage/file_download_web.cpp
+++ b/Telegram/SourceFiles/storage/file_download_web.cpp
@@ -391,7 +391,7 @@ void WebLoadManager::clear() {
 		sent.reply->abort();
 		delete sent.reply;
 	}
-	for (const auto reply : base::take(_repliesBeingDeleted)) {
+	for (const auto &reply : base::take(_repliesBeingDeleted)) {
 		if (reply) {
 			delete reply;
 		}
diff --git a/Telegram/SourceFiles/storage/storage_account.cpp b/Telegram/SourceFiles/storage/storage_account.cpp
index d274b60ff..6b5f78eba 100644
--- a/Telegram/SourceFiles/storage/storage_account.cpp
+++ b/Telegram/SourceFiles/storage/storage_account.cpp
@@ -1578,7 +1578,7 @@ void Account::writeStickerSets(
 			continue;
 		}
 
-		for (const auto sticker : raw->stickers) {
+		for (const auto sticker : std::as_const(raw->stickers)) {
 			size += Serialize::Document::sizeInStream(sticker);
 		}
 
diff --git a/Telegram/SourceFiles/support/support_helper.cpp b/Telegram/SourceFiles/support/support_helper.cpp
index 6252fd036..65dca5746 100644
--- a/Telegram/SourceFiles/support/support_helper.cpp
+++ b/Telegram/SourceFiles/support/support_helper.cpp
@@ -576,11 +576,11 @@ QString InterpretSendPath(
 	auto caption = QString();
 	for (const auto &line : lines) {
 		if (line.startsWith(qstr("from: "))) {
-			if (window->session().userId() != line.mid(qstr("from: ").size()).toInt()) {
+			if (window->session().userId() != line.midRef(qstr("from: ").size()).toInt()) {
 				return "App Error: Wrong current user.";
 			}
 		} else if (line.startsWith(qstr("channel: "))) {
-			const auto channelId = line.mid(qstr("channel: ").size()).toInt();
+			const auto channelId = line.midRef(qstr("channel: ").size()).toInt();
 			toId = peerFromChannel(channelId);
 		} else if (line.startsWith(qstr("file: "))) {
 			const auto path = line.mid(qstr("file: ").size());
diff --git a/Telegram/SourceFiles/ui/special_fields.cpp b/Telegram/SourceFiles/ui/special_fields.cpp
index b9b3d3bc2..7ed7f90a4 100644
--- a/Telegram/SourceFiles/ui/special_fields.cpp
+++ b/Telegram/SourceFiles/ui/special_fields.cpp
@@ -204,7 +204,7 @@ void PhonePartInput::onChooseCode(const QString &code) {
 	_additionalPlaceholder = QString();
 	if (!_pattern.isEmpty()) {
 		_additionalPlaceholder.reserve(20);
-		for (const auto part : _pattern) {
+		for (const auto part : std::as_const(_pattern)) {
 			_additionalPlaceholder.append(' ');
 			_additionalPlaceholder.append(QString(part, QChar(0x2212)));
 		}
diff --git a/Telegram/SourceFiles/window/window_filters_menu.cpp b/Telegram/SourceFiles/window/window_filters_menu.cpp
index 0a7902ef1..be983090b 100644
--- a/Telegram/SourceFiles/window/window_filters_menu.cpp
+++ b/Telegram/SourceFiles/window/window_filters_menu.cpp
@@ -188,7 +188,7 @@ void FiltersMenu::refresh() {
 	}
 	_reorder->cancel();
 	auto now = base::flat_map<int, base::unique_qptr<Ui::SideBarButton>>();
-	for (const auto filter : filters->list()) {
+	for (const auto &filter : filters->list()) {
 		now.emplace(
 			filter.id(),
 			prepareButton(
diff --git a/Telegram/codegen b/Telegram/codegen
index 127968de8..a1fc93b13 160000
--- a/Telegram/codegen
+++ b/Telegram/codegen
@@ -1 +1 @@
-Subproject commit 127968de8129e8ccfa6ac50721c70415a5a087c3
+Subproject commit a1fc93b134108bbe6081a3f2cb7b17b611655424
diff --git a/Telegram/lib_storage b/Telegram/lib_storage
index cbe51722b..b39d20fe2 160000
--- a/Telegram/lib_storage
+++ b/Telegram/lib_storage
@@ -1 +1 @@
-Subproject commit cbe51722b73cfa9ff27bd59294b08aa5ee33c936
+Subproject commit b39d20fe229be82d9c119306136f1f65a1c91e2b
diff --git a/Telegram/lib_ui b/Telegram/lib_ui
index 2696dbc95..2039c5929 160000
--- a/Telegram/lib_ui
+++ b/Telegram/lib_ui
@@ -1 +1 @@
-Subproject commit 2696dbc959f29b773646d5ba6fc882a2ad468565
+Subproject commit 2039c5929359593f0336fb53f585a55c3acd46fd