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[Bug c++/31954] template function cannot create object of forward declared class
- From: "fang at csl dot cornell dot edu" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 May 2007 19:56:23 -0000
- Subject: [Bug c++/31954] template function cannot create object of forward declared class
- References: <bug-31954-13718@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- 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
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31954