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#include <stdio.h>
static char buf[10000];
static int bufi = 0;
void *realloc(void *ptr, size_t size) {
if (!ptr) {
bufi += size;
return buf + bufi - size;
} else {
return NULL;
}
}
void *calloc(size_t number, size_t size) {
bufi += number*size;
return buf + bufi - (number*size);
}
void free(void*ptr) {
}
void *reallocf(void *ptr, size_t size) {
return ptr;
}
volatile char* nullptr = NULL;
int main (void)
{
char *p;
p = realloc((void*)nullptr, 10);
p = calloc(10, 16);
(void)reallocf(p, 0);
return 0;
}
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