For strong typed enum, there is no type and class information.

# cat t.cc 
enum class Color : long { red = 200, green = 300 };

int main()
{
  Color c;
  return 0;
}

#g++ -g -std=c++0x t.cc

< 1><0x00000025>    DW_TAG_enumeration_type
                      DW_AT_name                  "Color"
                      DW_AT_byte_size             0x00000004
                      DW_AT_decl_file             0x00000001 
                      DW_AT_decl_line             0x00000001
                      DW_AT_sibling               <0x00000040>

Should have a DW_AT_enum_class and DW_AT_type under DW_TAG_enumeration_type.