#include <stdio.h>unsigned char cde[] = "\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b""\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd""\x80\xe8\xdc\xff\xff\xff/bin/ls";void tst(void) {  int *ret;  ret = (int *)&ret+2;  (*ret) = (int) cde;}int main(void) {  printf("Running tst\n");  tst();  printf("tst returned\n");}