postgrespro
diff --git a/‎src/utils/file.c
Copy file name to clipboardExpand all lines: src/utils/file.c
+8Lines changed: 8 additions & 0 deletions b/‎src/utils/file.c
Copy file name to clipboardExpand all lines: src/utils/file.c
+8Lines changed: 8 additions & 0 deletions
@@ -2717,6 +2717,14 @@ fio_send_file_write(FILE* out, send_file_state* st, char *buf, size_t len)
 	if (len == 0)
 		return true;
 
+#ifdef WIN32
+	if (st->read_size > st->write_size &&
+		_chsize_s(fileno(out), st->read_size) != 0)
+	{
+		elog(WARNING, "Could not change file size to %lld: %m", st->read_size);
+		return false;
+	}
+#endif
 	if (st->read_size > st->write_size &&
 		fseeko(out, st->read_size, SEEK_SET) != 0)
 	{