return(struct) implementation

[Forrest Gehrke]

In article <1989Mar7.163952.20063 at utzoo.uucp>, henry at utzoo.uucp (Henry Spencer) writes:
.>  [.....deletes] 
> Just about every permutation of putting it on the stack is probably
> in use in some compiler or other.  Probably the best approach, although
> it's one that requires correct declaration, is to have the caller pass
> in a pointer (as an invisible extra parameter) to where he wants the
> return value put.  Even stranger approaches have been used in some
.>  [deletes]




I don't understand how a programmer calls a function and passes
an "invisible extra parameter".  What device does he use to
accomplish this? .....Or, are you talking about the compiler
programmer?

Forrest Gehrke