3 files changed, 8 insertions, 8 deletions
diff --git a/src/OSSupport/CMakeLists.txt b/src/OSSupport/CMakeLists.txt
index df47394ae..ce1d5c530 100644
--- a/src/OSSupport/CMakeLists.txt
+++ b/src/OSSupport/CMakeLists.txt
@@ -40,7 +40,7 @@ SET (HDRS
 )
 
 if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
-	add_flags_cxx("-Wno-error=global-constructors -Wno-error=old-style-cast")
+	add_flags_cxx("-Wno-error=global-constructors ")
 endif()
 
 if(NOT MSVC)
diff --git a/src/OSSupport/File.cpp b/src/OSSupport/File.cpp
index 6327b3505..03cddc408 100644
--- a/src/OSSupport/File.cpp
+++ b/src/OSSupport/File.cpp
@@ -156,7 +156,7 @@ int cFile::Read (void * iBuffer, size_t iNumBytes)
 		return -1;
 	}
 	
-	return (int)fread(iBuffer, 1, (size_t)iNumBytes, m_File);  // fread() returns the portion of Count parameter actually read, so we need to send iNumBytes as Count
+	return static_cast<int>(fread(iBuffer, 1, static_cast<size_t>(iNumBytes), m_File));  // fread() returns the portion of Count parameter actually read, so we need to send iNumBytes as Count
 }
 
 
@@ -172,7 +172,7 @@ int cFile::Write(const void * iBuffer, size_t iNumBytes)
 		return -1;
 	}
 
-	int res = (int)fwrite(iBuffer, 1, (size_t)iNumBytes, m_File);  // fwrite() returns the portion of Count parameter actually written, so we need to send iNumBytes as Count
+	int res = static_cast<int>(fwrite(iBuffer, 1, static_cast<size_t>(iNumBytes), m_File));  // fwrite() returns the portion of Count parameter actually written, so we need to send iNumBytes as Count
 	return res;
 }
 
@@ -236,7 +236,7 @@ long cFile::GetSize(void) const
 		return -1;
 	}
 	long res = Tell();
-	if (fseek(m_File, (long)CurPos, SEEK_SET) != 0)
+	if (fseek(m_File, static_cast<long>(CurPos), SEEK_SET) != 0)
 	{
 		return -1;
 	}
@@ -272,7 +272,7 @@ int cFile::ReadRestOfFile(AString & a_Contents)
 	
 	// HACK: This depends on the internal knowledge that AString's data() function returns the internal buffer directly
 	a_Contents.assign(DataSize, '\0');
-	return Read((void *)a_Contents.data(), DataSize);
+	return Read(reinterpret_cast<void *>(const_cast<char *>(a_Contents.data())), DataSize);
 }
 
 
@@ -366,7 +366,7 @@ long cFile::GetSize(const AString & a_FileName)
 	struct stat st;
 	if (stat(a_FileName.c_str(), &st) == 0)
 	{
-		return (int)st.st_size;
+		return static_cast<int>(st.st_size);
 	}
 	return -1;
 }
diff --git a/src/OSSupport/GZipFile.cpp b/src/OSSupport/GZipFile.cpp
index 32d84a0d5..2ddc260e5 100644
--- a/src/OSSupport/GZipFile.cpp
+++ b/src/OSSupport/GZipFile.cpp
@@ -78,7 +78,7 @@ int cGZipFile::ReadRestOfFile(AString & a_Contents)
 	while ((NumBytesRead = gzread(m_File, Buffer, sizeof(Buffer))) > 0)
 	{
 		TotalBytes += NumBytesRead;
-		a_Contents.append(Buffer, (size_t)NumBytesRead);
+		a_Contents.append(Buffer, static_cast<size_t>(NumBytesRead));
 	}
 	// NumBytesRead is < 0 on error
 	return (NumBytesRead >= 0) ? TotalBytes : NumBytesRead;
@@ -102,7 +102,7 @@ bool cGZipFile::Write(const char * a_Contents, int a_Size)
 		return false;
 	}
 
-	return (gzwrite(m_File, a_Contents, (unsigned int)a_Size) != 0);
+	return (gzwrite(m_File, a_Contents, static_cast<unsigned int>(a_Size)) != 0);
 }