void _main(){twoints * data;data=(twoints *)realloc(data, 100);data[0].a=1;data[0].b=1;printStructLine(&data[0]);free(data);}
static void main(){twoints * data;data=(twoints *)realloc(data, 100);if (data!=NULL){data[0].a=1;data[0].b=1;printStructLine(&data[0]);free(data);}}