Template Template Matching Problem on Defaults (old g++ extension induced problem -- bug 9737)

[Wolfgang Bangerth]

> Anyone have an update for September 2004?

I don't, but I just files PR 17570 for this. You may want to put yourself 
on the CC list.


> PS:  I also don't get what analogue this extension was suppose to 
> maintain with function function parameters (see bug report).  I just 
> finished checking, and g++ certainly does not allow things like 
> assigning an n (non default) plus m (default) argument function to an n 
> argument function pointer.

That isn't the point. The reason was so that people can match
  std::vector<int>
  std::set<int>
  ...
etc to template template parameters with only one template argument, 
despite the fact that these classes have more than just one, and possibly 
different numbers of template arguments, all of which except for the first 
have default arguments.

W.

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Wolfgang Bangerth              email:            bangerth@ices.utexas.edu
                               www: http://www.ices.utexas.edu/~bangerth/