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#include <stdio.h>
#include "memory.h"
#undef memdup
void* memdup(void *buf, size_t num){
if(buf == NULL) return NULL;
char *buf2 = malloc(num, char);
memcpy(buf2, buf, num);
return (void*)buf2;
}
void* check_after_allocation(const char *funcname, void *ptr){
if(ptr == NULL){
perror(funcname);
exit(1);
}
return ptr;
}
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