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#include <string.h>
#include <features.h>
weak void *memcpy(void *restrict s1, const void *restrict s2, size_t n);
void *memcpy(void *restrict s1, const void *restrict s2, size_t n)
{
unsigned char *dest = (unsigned char *)s1;
const unsigned char *src = (const unsigned char *)s2;
while (n--) {
*dest++ = *src++;
}
return s1;
}
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