On Monday, October 25, 2010 06:08:24 Austin Hastings wrote: > On 10/24/2010 5:16 AM, Simen kjaeraas wrote: > > Austin Hastings <[email protected]> wrote: > >> If Decider uses Option1.sizeof, does any Option1 code get emitted? > > > > For sizeof to be known, the template would have to be instantiated, yes. > > Instantiated does not necessarily imply emitting code, I think. (Of > course, this is why I asked - to find out the compiler behavior and > expectations.)
They're exactly the same thing. When a template is instantiated, a copy of that template is created with the paramaters that it was given. The only reason new code wouldn't be emitted would be is if that particular set of parameters had already been used with that template and so there was no need to create it anew. - Jonathan M Davis
