From 4f8cfce082f400ca204d993dea125ccd0090d9a4 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Wed, 1 Dec 2021 20:54:56 +0300
Subject: [PATCH] Fix g++4.9 compilation errors.

---
 td/telegram/FileReferenceManager.cpp | 10 +++++-----
 td/telegram/FileReferenceManager.h   | 10 +++++++---
 td/telegram/MessagesDb.h             |  4 ++--
 3 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/td/telegram/FileReferenceManager.cpp b/td/telegram/FileReferenceManager.cpp
index 90c931d50..cea3a1911 100644
--- a/td/telegram/FileReferenceManager.cpp
+++ b/td/telegram/FileReferenceManager.cpp
@@ -173,8 +173,8 @@ void FileReferenceManager::merge(NodeId to_node_id, NodeId from_node_id) {
   auto &from = from_it->second;
   VLOG(file_references) << "Merge " << to.file_source_ids.size() << " and " << from.file_source_ids.size()
                         << " sources of files " << to_node_id << " and " << from_node_id;
-  CHECK(!to.query || to.query->proxy.empty());
-  CHECK(!from.query || from.query->proxy.empty());
+  CHECK(!to.query || to.query->proxy.is_empty());
+  CHECK(!from.query || from.query->proxy.is_empty());
   if (to.query || from.query) {
     if (!to.query) {
       to.query = make_unique<Query>();
@@ -183,7 +183,7 @@ void FileReferenceManager::merge(NodeId to_node_id, NodeId from_node_id) {
     if (from.query) {
       combine(to.query->promises, std::move(from.query->promises));
       to.query->active_queries += from.query->active_queries;
-      from.query->proxy = {to_node_id, to.query->generation};
+      from.query->proxy = Destination(to_node_id, to.query->generation);
     }
   }
   to.file_source_ids.merge(std::move(from.file_source_ids));
@@ -225,7 +225,7 @@ void FileReferenceManager::run_node(NodeId node_id) {
     return;
   }
   auto file_source_id = node.file_source_ids.next();
-  send_query({node_id, node.query->generation}, file_source_id);
+  send_query(Destination(node_id, node.query->generation), file_source_id);
 }
 
 void FileReferenceManager::send_query(Destination dest, FileSourceId file_source_id) {
@@ -325,7 +325,7 @@ FileReferenceManager::Destination FileReferenceManager::on_query_result(Destinat
   query->active_queries--;
   CHECK(query->active_queries >= 0);
 
-  if (!query->proxy.empty()) {
+  if (!query->proxy.is_empty()) {
     query->active_queries -= sub;
     CHECK(query->active_queries >= 0);
     auto new_proxy = on_query_result(query->proxy, file_source_id, std::move(status), query->active_queries);
diff --git a/td/telegram/FileReferenceManager.h b/td/telegram/FileReferenceManager.h
index f9129cac3..cadaba933 100644
--- a/td/telegram/FileReferenceManager.h
+++ b/td/telegram/FileReferenceManager.h
@@ -76,11 +76,15 @@ class FileReferenceManager final : public Actor {
 
  private:
   struct Destination {
-    bool empty() const {
-      return node_id.empty();
-    }
     NodeId node_id;
     int64 generation{0};
+
+    Destination() = default;
+    Destination(NodeId node_id, int64 generation) : node_id(node_id), generation(generation) {
+    }
+    bool is_empty() const {
+      return node_id.empty();
+    }
   };
   struct Query {
     std::vector<Promise<>> promises;
diff --git a/td/telegram/MessagesDb.h b/td/telegram/MessagesDb.h
index f2017db93..af3ffff17 100644
--- a/td/telegram/MessagesDb.h
+++ b/td/telegram/MessagesDb.h
@@ -66,8 +66,8 @@ struct MessagesDbGetDialogSparseMessagePositionsQuery {
 };
 
 struct MessagesDbMessagePosition {
-  int32 position{0};
-  int32 date{0};
+  int32 position;
+  int32 date;
   MessageId message_id;
 };