?: as an lvalue

Hi Everyone,

 I have the following piece of code, and i expected an error, however
i don't get an error,

int main()
{
	int aa=0,b=0;
	1>0?aa:b = 10;
        printf("value %d %d\n",aa,b);
 return(0);
}

and output is value 0 0

Thanks in advance ! ! !