gcc and template

[Oliver Kullmann]

> Thank you for your reply.
> I have modify the program in the following way:
> 
> #include <vector>
> using namespace std;
> 
> template <class T>void my_fun2();
> 
> template <class T> void	
> my_fun1(){
> my_fun2<T>();
> };
> 
> template <class T> void
> my_fun2(){
> T prova=1234;
> };
> 
> int main()
> {
>   my_fun1<float>();
>   return 0;
> };
> 
> But now the compiler tell me that there is an error in my_fun2.
> Please help me.
> 
>

the code above should be correct (and compiles with g++).
(BTW: Please don't say "there is an error ...", but give **details**!!
Just copy the error message.
And perhaps better send your mail (also) to the list so that other people
can participate and/or learn from it.)

Oliver
 
> 
> 
> 
> >-- Messaggio Originale --
> >Date: Sat, 22 Nov 2003 13:44:42 +0000
> >From: Oliver Kullmann <O.Kullmann@Swansea.ac.uk>
> >To: codaditasso@tiscali.it
> >Subject: Re: gcc and template
> >
> >
> >> 
> > Hello 
> > I've tried to compile the following program with gcc: 
> > 
> > 1 template <class T> void 
> > 2 my_fun1(){ 
> > 3 my_fun2<T>(); 
> > 4 }; 
> > 5 
> > 6 template <class T> void 
> > 7 my_fun2(){ 
> > 8 T prova=1234; 
> > 9 }; 
> > 10 
> > 11 int ma
> >n() 
> > 12 { 
> > 13 my_fun1<float>(); 
> > 14 
> > 15 return 0; 
> > 16 } 
> > 
> > but the compiler tell me that there is syntax error before > in line 3.
> > Anyway with the c++ builder the program was compiled correctly. What's
> the
> > problem? Also with t
> >e mingw I've obtained the same compile error? 
> > In the gcc are not possible to call a template function with in another?
> > 
> > 
> > Greetings from pinzi 
> >
> 
> Hi,
> 
> at line 3 you are using a non-dependent name ("my_fun2"), and non-dependent
> names 
> >n template definitions are looked up immediately (while dependent
> names are looked up at the point of instantiation).
> 
> So you need to declare my_fun2 before the definition of the function template
> my_fun1:
> 
> template <class T>
> void my_fun2();
> 
> 
> > 1 template <class T> void
> > 2 my_fun1(){
> > 3 my_fun2<T>();
> 
> ...
> 
> Oliver
>  
> Oliver
>  
> 
> 
> 
> 
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