#include <stddef.h>

extern void my_fast_free(void *);
extern void my_checking_free(void *);

static inline void my_kfree( void *ptr )
{
#ifdef CASE_A
	register int is_null = 0;
	if (ptr == NULL)
		is_null = 1;
	if (__builtin_constant_p(is_null)) {
#else /* CASE_B */
	if (__builtin_constant_p(ptr==NULL)) {
#endif
		if (ptr != NULL)
			my_fast_free(ptr);
	} else {
		my_slow_free(ptr);
	}
}

void test( int *bla )
{
	char *hello = NULL;
	my_kfree(hello);
	my_kfree(bla);
	*bla = 1;
	my_kfree(bla);
}