Index: gdal-3.0.4/ogr/ogrsf_frmts/cad/libopencad/dwg/r2000.cpp
===================================================================
--- gdal-3.0.4.orig/ogr/ogrsf_frmts/cad/libopencad/dwg/r2000.cpp
+++ gdal-3.0.4/ogr/ogrsf_frmts/cad/libopencad/dwg/r2000.cpp
@@ -36,6 +36,7 @@
 #include <cassert>
 #include <cstring>
 #include <iostream>
+#include <limits>
 #include <memory>
 #include <string>