MISRA.INCOMPLETE.STRUCT.UNNAMED

Incomplete unnamed struct type is used.

MISRA-C Rule 18.1 (required): All structure and union types shall be complete at the end of a translation unit.

This rule is also covered by MISRA.INCOMPLETE.STRUCT, MISRA.INCOMPLETE.UNION and MISRA.INCOMPLETE.UNION.UNNAMED.

[Undefined 35]

A complete declaration of the structure or union shall be included within any translation unit that reads from or writes to that structure. A pointer to an incomplete type is itself complete and is permitted, and therefore the use of opaque pointers is permitted. See section 6.1.2.5 of ISO/IEC 9899:1990 [2] for a full description of incomplete types.

Example

struct tnode * pt;        /* tnode is incomplete at this point */

struct tnode
{
   int count;
   struct tnode *left;
   struct tnode * right;
};                        /* type tnode is now complete        */