Fixing missing .get() for unique_ptr and working around a GCC compiler bug.

Author: stgates

Release/include/cpprest/filestream.h

@@ -217,11 +217,17 @@ namespace details {
             return pplx::create_task(result_tce);
         }
 
+        // Workaround GCC compiler bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58972
+        void _invoke_parent_close_read()
+        {
+            streambuf_state_manager<_CharType>::_close_read();
+        }
+
         pplx::task<void> _close_read()
         {
             return m_readOps.enqueue_operation([this]
             {
-                streambuf_state_manager<_CharType>::_close_read();
+                _invoke_parent_close_read();
 
                 if (this->can_write())
                 {

Release/src/streams/fileio_win32.cpp

@@ -414,7 +414,7 @@ size_t _write_file_async(_In_ streams::details::_file_info_impl *fInfo, _In_ str
         // However, we didn't pass in an  address for the number of bytes written, so
         // we have to retrieve it using 'GetOverlappedResult,' which may, in turn, fail.
         DWORD written = 0;
-        result = GetOverlappedResult(fInfo->m_handle, pOverlapped, &written, FALSE) ? static_cast<size_t>(written) : static_cast<size_t>(-1);
+        result = GetOverlappedResult(fInfo->m_handle, pOverlapped.get(), &written, FALSE) ? static_cast<size_t>(written) : static_cast<size_t>(-1);
     }
 
     if (result == static_cast<size_t>(-1))
@@ -502,7 +502,7 @@ size_t _read_file_async(_In_ streams::details::_file_info_impl *fInfo, _In_ stre
         // However, we didn't pass in an address for the number of bytes written, so
         // we have to retrieve it using 'GetOverlappedResult,' which may, in turn, fail.
         DWORD read = 0;
-        result = GetOverlappedResult(fInfo->m_handle, pOverlapped, &read, FALSE) ? static_cast<size_t>(read) : static_cast<size_t>(-1);
+        result = GetOverlappedResult(fInfo->m_handle, pOverlapped.get(), &read, FALSE) ? static_cast<size_t>(read) : static_cast<size_t>(-1);
     }
 
     if (wrResult == FALSE && error == ERROR_HANDLE_EOF)