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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <malloc.h>
 
  Syntax:    int _heapwalk( _HEAPINFO *entryinfo );
             int _bheapwalk( __segment seg, _HEAPINFO *entryinfo );
             int _fheapwalk( _HEAPINFO *entryinfo );
             int _nheapwalk( _HEAPINFO *entryinfo );
 
  Returns:   one of the following manifest constants: _HEAPBADBEGIN,
             _HEAPBADNODE, _HEAPBADPTR, _HEAPEMPTY, _HEAPEND, _HEAPOK
 
  See also:  _heapchk, _heapset
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