Re: template specification oddness
Matthias Buelow wrote:
Hi folks,
I have a weird problem that I can't seem to put my finger on. The
following example program illustrates it:
----------------------------------------------------------------------
using namespace std;
template<typename Tval, typename Targ> struct Closure {
virtual Tval f(Targ arg) = 0;
virtual ~Closure() = 0;
// add environment by subclassing
};
#include <list>
template<typename Targ> struct Hooks {
std::list<Closure<void, Targ> *> hooks;
void AddHook(Closure<void, Targ> *cl) { hooks.push_front(cl); }
void RemoveHook(Closure<void, Targ> *cl) { hooks.remove(cl); }
void RunHooks(Targ arg) {
std::list<Closure<void, Targ> *>::const_iterator i =
typename std::list<Closure<void, Targ> *>::const_iterator i =
hooks.begin(); for (; i != hooks.end(); i++)
... ; ++i)
(*i)->f(arg);
}
};
int main()
{
Hooks<bool> h;
return 0;
}
----------------------------------------------------------------------
When compiling this, g++ (g++ (GCC) 4.1.2 20061115 (prerelease)
(Debian 4.1.1-21)) gives the following error:
t.cc: In member function 'void Hooks<Targ>::RunHooks(Targ)':
t.cc:17: error: expected `;' before 'i'
t.cc:18: error: 'i' was not declared in this scope
The Intel compiler, however, compiles it without error (icpc (ICC)
10.1 20070913).
Which compiler is right? Is it a g++ bug?
I don't think so. Intel is often too forgiving.
V
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