Demonstrates the bug in Solidity which results in structs not being correctly stored in mappings.

solidity-struct-multiple-string-bug.sol

contract Whois {

	mapping(bytes32 => Address) addresses;


    //Struct representing a postal address
    struct Address {
        
        bool initialized;

        string identifier;
        
        string street;
        string city;
    }
	
	
    function buildAddress(string identifier, string street, string city) public returns(string){
    
        Address storage addressInstance = addresses[sha3(identifier)];
        
        addressInstance.initialized = true;
        addressInstance.identifier = identifier;
        addressInstance.street = street;
        addressInstance.city = city;
        
        return identifier;
    }
    
    
    function getAddressStreet(string addressIdentifier) public constant returns(string) {
        
        Address storage addressInstance = addresses[sha3(addressIdentifier)];
    
        if (addressInstance.initialized == false) {
            // Unknown node, just return 0x0;
            return "No address";
        }
        
        return addressInstance.street;   
    }
}