Names related to structures, unions, and enumerations

The auxiliary table entries for structure, union, and enumeration symbols have the format shown in Table 7-35, ``Entries for structures, unions, and enumerations'':

Table 7-35 Entries for structures, unions, and enumerations

 Bytes   Declaration      Name       Description
 --------------------------------------------------------
 0-3     long int         x_tagndx   tag index
 4-5     -                -          unused (filled with
                                     zeroes)
 6-7     unsigned short   x_size     size of the
                                     structure, union, or
                                     enumeration
 8-17    -                -          unused (filled with
                                     zeroes)

Aggregates defined by typedef may or may not have auxiliary table entries. For example,

   typedef struct people STUDENT;

   struct people
   {
          char name[20];
          long id;
   };

   typedef struct people EMPLOYEE;

The symbol EMPLOYEE has an auxiliary table entry in the symbol table, but symbol STUDENT will not because it is a forward reference to a structure.