#include <stdio.h>
#include <string.h>

void foo (char *str) {
	char buffer[12];

	strcpy(buffer,str);
	printf("buffer is: %s\n",buffer);
}

int main() {
	char *str = "A string"; //works as expected
	//char *str = "A string that is definitely longer than 12"; //stack smashing detected!
	foo(str);

	printf("str is: %s\n",str);
}