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#include <stdlib.h>
#include <stdio.h>
#include <new>
int get_new0strategy(void)
{
/* test for behaviour of operator new with size 0 */
int op_new_0_strategy;
int * piNullPtrA;
int * piNullPtrB;
piNullPtrA = (int*) operator new(0);
piNullPtrB = (int*) operator new(0);
if ( !piNullPtrA )
op_new_0_strategy = 1;
else if ( piNullPtrA == piNullPtrB )
op_new_0_strategy = 2;
else
op_new_0_strategy = 3;
delete piNullPtrA;
delete piNullPtrB;
return op_new_0_strategy;
}
int get_newVec0strategy(void)
{
/* test for behaviour of operator new with size 0 */
int op_new_0_strategy;
int * piNullPtrA;
int * piNullPtrB;
piNullPtrA = new int[0];
piNullPtrB = new int[0];
if ( !piNullPtrA )
op_new_0_strategy = 1;
else if ( piNullPtrA == piNullPtrB )
op_new_0_strategy = 2;
else
op_new_0_strategy = 3;
delete []piNullPtrA;
delete []piNullPtrB;
return op_new_0_strategy;
}
int get_malloc0strategy(void)
{
int op_new_0_strategy;
int * piNullPtrA;
int * piNullPtrB;
piNullPtrA = (int*)malloc(0);
piNullPtrB = (int*)malloc(0);
if ( !piNullPtrA )
op_new_0_strategy = 1;
else if ( piNullPtrA == piNullPtrB )
op_new_0_strategy = 2;
else
op_new_0_strategy = 3;
free(piNullPtrA);
free(piNullPtrB);
return op_new_0_strategy;
}
int main(int argc, char *argv[])
{
int test = 0;
int strategy;
if ( argc >= 1 )
test = atoi( argv[1] );
switch (test)
{
default:
case 0: printf("testing malloc(0) .. "); strategy = get_malloc0strategy(); break;
case 1: printf("testing new(0) .. "); strategy = get_new0strategy(); break;
case 2: printf("testing new[0] .. "); strategy = get_newVec0strategy(); break;
}
printf("result is %d\n", strategy);
return 0;
}
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