[Bug c++/31954] template function cannot create object of forward declared class

[fang at csl dot cornell dot edu]

------- Comment #2 from fang at csl dot cornell dot edu  2007-05-16 20:56 
-------
I concur.  If you want to forcibly delay the dependence on the complete type
until instantiation time, you could use a nested typedef in the class template,
like:

class NonDependent;

template <class X>
struct foo {
  typedef NonDependent Bar;
};

class NonDependent { ... };

and then in members of foo, refer to "typename foo<X>::Bar".


-- 

fang at csl dot cornell dot edu changed:

           What    |Removed                     |Added
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                 CC|                            |fang at csl dot cornell dot
                   |                            |edu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31954