*****Listing 7*****


production version of the code:

     getspace.h
     #ifdef DEBUG
     extern void * getspace(char * where, unsigned size);
     extern void   freespace(char * where, void * what);
     #else
     #define getspace(where,size)  ((void *)malloc(size))
     #define freespace(where,what) free(what)
     #endif


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