Checking for contracts in Constantinople - EVM - Ethereum Research


    
    
  
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      Checking for contracts in Constantinople
    


      
          
            
              
              
                EVM
              
            
            



      

        

            

            
              
                MoonMissionControl
                
              

              



              
                  
                    July 10, 2018, 12:01am
                  
                  

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              Right now, in solidity, there are two ways to check for a contract, via extcodesize or by checking if tx.origin == msg.sender.

tx.origin is going to be deprecated.

extcodesize does not work for contracts calling via their constructor.

This should be fixed. A clear way should be presented to check if an address is a contract OR an user, especially when “user wallets” will have actual code in them in the future.

            


            
              

            

            
                

            
              
                enderphan94
                
              

              



              
                  
                    November 28, 2019, 10:31am
                  
                  

2
              
            
            
              Same concern, have you found the solution?

            


            
              

            

            
                
	
        
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