From b89c38f0f09697f40053965fef14c19ad307e9e1 Mon Sep 17 00:00:00 2001
From: proller <proller@github.com>
Date: Fri, 28 Jun 2019 18:24:56 +0300
Subject: [PATCH] Fix more gcc9 warnings

---
 dbms/src/IO/ReadBufferAIO.cpp  | 2 +-
 dbms/src/IO/WriteBufferAIO.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dbms/src/IO/ReadBufferAIO.cpp b/dbms/src/IO/ReadBufferAIO.cpp
index f47e04bff75..7aad9b1eebd 100644
--- a/dbms/src/IO/ReadBufferAIO.cpp
+++ b/dbms/src/IO/ReadBufferAIO.cpp
@@ -254,7 +254,7 @@ void ReadBufferAIO::prepare()
     /// Region of the disk from which we want to read data.
     const off_t region_begin = first_unread_pos_in_file;
 
-    if ((requested_byte_count > std::numeric_limits<off_t>::max()) ||
+    if ((static_cast<ssize_t>(requested_byte_count) > std::numeric_limits<off_t>::max()) ||
         (first_unread_pos_in_file > (std::numeric_limits<off_t>::max() - static_cast<off_t>(requested_byte_count))))
         throw Exception("An overflow occurred during file operation", ErrorCodes::LOGICAL_ERROR);
 
diff --git a/dbms/src/IO/WriteBufferAIO.cpp b/dbms/src/IO/WriteBufferAIO.cpp
index 2fe7da27809..e163124f418 100644
--- a/dbms/src/IO/WriteBufferAIO.cpp
+++ b/dbms/src/IO/WriteBufferAIO.cpp
@@ -274,7 +274,7 @@ void WriteBufferAIO::prepare()
     /// Region of the disk in which we want to write data.
     const off_t region_begin = pos_in_file;
 
-    if ((flush_buffer.offset() > std::numeric_limits<off_t>::max()) ||
+    if ((static_cast<ssize_t>(flush_buffer.offset()) > std::numeric_limits<off_t>::max()) ||
         (pos_in_file > (std::numeric_limits<off_t>::max() - static_cast<off_t>(flush_buffer.offset()))))
         throw Exception("An overflow occurred during file operation", ErrorCodes::LOGICAL_ERROR);