initialize print_context registry on startup

diff --git a/ginac/utils.cpp b/ginac/utils.cpp
index 12a8d1b3251db17dcc19a23fba05c5fd6a311c4b..7291021d50cca6b4c18253b70d7e04ece40f63a4 100644 (file)
--- a/ginac/utils.cpp
+++ b/ginac/utils.cpp
@@ -366,6 +366,21 @@ library_init::library_init()
                _num48_p  = reinterpret_cast<const numeric*>(&((new numeric(48))->setflag(status_flags::dynallocated)));
                _num60_p  = reinterpret_cast<const numeric*>(&((new numeric(60))->setflag(status_flags::dynallocated)));
                _num120_p = reinterpret_cast<const numeric*>(&((new numeric(120))->setflag(status_flags::dynallocated)));
+
+               // Initialize print context class info (this is not strictly necessary
+               // but we do it anyway to make print_context_class_info::dump_hierarchy()
+               // output the whole hierarchy whether or not the classes are actually
+               // used)
+               print_context::get_class_info_static();
+               print_dflt::get_class_info_static();
+               print_latex::get_class_info_static();
+               print_python::get_class_info_static();
+               print_python_repr::get_class_info_static();
+               print_tree::get_class_info_static();
+               print_csrc::get_class_info_static();
+               print_csrc_float::get_class_info_static();
+               print_csrc_double::get_class_info_static();
+               print_csrc_cl_N::get_class_info_static();
        }
 }