/* Test that overwrite error detection works reasonably. */[3456] ,6912] 0 ] ,27648 ]
#ifndef GC_DEBUG
# define GC_DEBUG
#endif
#include "gc.h"
#include <stdio.h>
#define COUNT 7000
#define SIZE 40
char * A[COUNT];
char * volatile q;
int main(void)
{
int i;
char *p;
GC_INIT();
for (i = 0; i < COUNT; ++i) {
A[i] = p = (char*)GC_MALLOC(SIZE);
if (i%3000 == 0) {
q = NULL;
GC_gcollect();
} else if (i%5678 == 0 && p != 0) {
/* Write a byte past the end of the allocated object */
/* but not beyond the last word of the object's memory. */
/* A volatile intermediate pointer variable is used to */
/* avoid a compiler complain of out-of-bounds access. */
q = &p[(SIZE + i/2000) /* 42 */];
*q = 42;
}
}
return 0;
}
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