From 7fa954bddeae1fbc47aade91b402520fe356cb6d Mon Sep 17 00:00:00 2001
From: Oliver Schonrock <oliver@schonrocks.com>
Date: Fri, 13 Dec 2024 20:23:38 +0000
Subject: [PATCH] silencing -Wconversion and -Wsign-conversion warnings

---
 include/mio/detail/mmap.ipp | 16 +++++++++-------
 include/mio/page.hpp        |  5 +++--
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/include/mio/detail/mmap.ipp b/include/mio/detail/mmap.ipp
index 1fec025..d2a6126 100644
--- a/include/mio/detail/mmap.ipp
+++ b/include/mio/detail/mmap.ipp
@@ -26,6 +26,8 @@
 #include "mio/detail/string_util.hpp"
 
 #include <algorithm>
+#include <cstddef>
+#include <cstdint>
 
 #ifndef _WIN32
 # include <unistd.h>
@@ -155,7 +157,7 @@ inline size_t query_file_size(file_handle_type handle, std::error_code& error)
         error = detail::last_error();
         return 0;
     }
-    return sbuf.st_size;
+    return static_cast<size_t>(sbuf.st_size);
 #endif
 }
 
@@ -172,7 +174,7 @@ struct mmap_context
 inline mmap_context memory_map(const file_handle_type file_handle, const int64_t offset,
     const int64_t length, const access_mode mode, std::error_code& error)
 {
-    const int64_t aligned_offset = make_offset_page_aligned(offset);
+  const int64_t aligned_offset = static_cast<int64_t>(make_offset_page_aligned(static_cast<size_t>(offset)));
     const int64_t length_to_map = offset - aligned_offset + length;
 #ifdef _WIN32
     const int64_t max_file_size = offset + length;
@@ -204,7 +206,7 @@ inline mmap_context memory_map(const file_handle_type file_handle, const int64_t
 #else // POSIX
     char* mapping_start = static_cast<char*>(::mmap(
             0, // Don't give hint as to where to map.
-            length_to_map,
+            static_cast<size_t>(length_to_map),
             mode == access_mode::read ? PROT_READ : PROT_READ | PROT_WRITE,
             MAP_SHARED,
             file_handle,
@@ -345,8 +347,8 @@ void basic_mmap<AccessMode, ByteT>::map(const handle_type handle,
         return;
     }
 
-    const auto ctx = detail::memory_map(handle, offset,
-            length == map_entire_file ? (file_size - offset) : length,
+    const auto ctx = detail::memory_map(handle, static_cast<int64_t>(offset),
+            static_cast<int64_t>(length == map_entire_file ? (file_size - offset) : length),
             AccessMode, error);
     if(!error)
     {
@@ -359,8 +361,8 @@ void basic_mmap<AccessMode, ByteT>::map(const handle_type handle,
         file_handle_ = handle;
         is_handle_internal_ = false;
         data_ = reinterpret_cast<pointer>(ctx.data);
-        length_ = ctx.length;
-        mapped_length_ = ctx.mapped_length;
+        length_ = static_cast<size_t>(ctx.length);
+        mapped_length_ = static_cast<size_t>(ctx.mapped_length);
 #ifdef _WIN32
         file_mapping_handle_ = ctx.file_mapping_handle;
 #endif
diff --git a/include/mio/page.hpp b/include/mio/page.hpp
index cae7377..4868128 100644
--- a/include/mio/page.hpp
+++ b/include/mio/page.hpp
@@ -21,6 +21,7 @@
 #ifndef MIO_PAGE_HEADER
 #define MIO_PAGE_HEADER
 
+#include <cstddef>
 #ifdef _WIN32
 # include <windows.h>
 #else
@@ -48,7 +49,7 @@ enum class access_mode
  */
 inline size_t page_size()
 {
-    static const size_t page_size = []
+  static const size_t page_size = static_cast<size_t>([]
     {
 #ifdef _WIN32
         SYSTEM_INFO SystemInfo;
@@ -57,7 +58,7 @@ inline size_t page_size()
 #else
         return sysconf(_SC_PAGE_SIZE);
 #endif
-    }();
+    }());
     return page_size;
 }