c - Segmentation fault: 11 when returning stuct via function pointer in struct -

i'm trying emulate constructor. i'm attempting having parent struct have function pointer returns pointer child struct. appreciated.

#include <stdio.h> #include "stdlib.h"  typedef struct child_t {    char *name;  } child;  typedef struct parent_t {    child (*newchild)();  } parent;  child *newchild() {   child *child = malloc(sizeof(child));    child->name = "foo";    return child; }  int  main() {   parent parent;    child child = parent.newchild(); } 

i think mean following

#include <stdio.h> #include <stdlib.h>  typedef struct child_t {    char *name;  } child;  typedef struct parent_t {      child * ( *newchild )( void );  } parent;  child * newchild( void )  {     child *child = malloc( sizeof( child ) );      child->name = "foo";      return child; }  int main( void ) {     parent parent = { newchild };      child *child = parent.newchild();      puts( child->name );      free( child ); }     

the program output

foo 

that should declare function correctly. return type must pointer. must declare function pointer correctly in structure definition

typedef struct parent_t {    child (*newchild)();   ^^^^^^ } parent; 

and need initialize object of type parent.

parent parent = { newchild }; 

otherwise has indeterminate value.