1 2 #include <stdlib.h> 3 ddd(char * x)4void ddd ( char* x ) 5 { 6 free(x); 7 free(x); 8 } 9 ccc(char * x)10void ccc (char* x) 11 { 12 ddd(x); 13 } 14 bbb(char * x)15void bbb (char* x) 16 { 17 ccc(x); 18 } 19 aaa(char * x)20void aaa (char* x) 21 { 22 bbb(x); 23 } 24 main(void)25int main ( void ) 26 { 27 char* x = malloc(10); 28 aaa(x); 29 return 0; 30 } 31