heapcheck

Checks and verifies the heap.

Defined in header <alloc.h>

Syntax

#include <alloc.h>
int heapcheck(void);

Portability

Remarks

heapcheck walks through the heap and examines each block checking its pointers, size, and other critical attributes. In the large data models, heapcheck maps to farheapcheck.

Return value

The return value is less than zero for an error and greater than zero for success. The return values and their meaning is as follows:

See also

• farheapcheck

Example

#include <stdio.h>
finclude <alloc.h>

#define NUM_PTRS  10
#define NUM_BYTES 16

int main(void)
{
   char *array[ NUM_PTRS ];
   int i;

   for( i = 0; i < NUM_PTRS; i++ )
      array[ i ] = (char *) malloc( NUM_BYTES
   for( i = 0; i < NUM_PTRS; i+=  2 )
      free( array[ i ] );
   if( heapcheck0  == _HEAPCORRUPT )
      printf( "Heap is corrupted.\n" ) ;
   else
      printf( "Heap is OK.\n" );
   return 0;

Differences from modern implementations

Nothing recorded yet.

Modern references

• Microsoft C runtime (search)

These are search links, not yet checked by hand.

Stable link: /3.1/alloc.h/heapcheck/ · short form /3.1/heapcheck/