Incorrect template code, or compiler/library bug?

[Michael T Decerbo]

The code below compiles without warnings or errors under g++ 3.2.1 on
Solaris, gcc 3.2.2 on Linux, and MSVC 6.0 on Windows.

Under g++ (GCC) 3.3.2, it produces the following errors:

% g++ -Wall testme_std.cpp
testme_std.cpp: 24: error: no `I LblID<I, MaxInd>::add(co nst
std::basic_stri ng<char, std::char_trait s<char>, std::allocator< char> >&)'
member function declared in class `LblID<I, MaxInd>'
testme_std.cpp: 24: error: template definition of non-template `I LblID<I,
MaxInd>::add(co nst std::basic_stri ng<char, std::char_trait s<char>,
std::allocator< char> >&)'
testme_std.cpp: In member function `I LblID<I, MaxInd>::add(co nst
std::basic_stri ng<char, std::char_trait s<char>, std::allocator< char> >&)':
testme_std.cpp: 15: error: `typedef typename std::map<std::s tring, I,
std::less<std:: string>, std::allocator< std::pair<const std::string, I> >[color=blue]
>::iterator LblID<I, MaxInd>::lbl_it er' is inaccessible[/color]
testme_std.cpp: 25: error: within this context

Is the error in the code, or in the compiler?

In general, is there some way I can answer this question in the future--
an online syntax checker, or something?

Thanks, everyone.


Mike Decerbo
mike@mit.edu

(code follows)

#include <map>
#include <vector>
#include <string>

using namespace std;

template <class I, size_t MaxInd>
class LblID
{
public:

map< string, I > lbl2id;
vector<string> id2lbl;

typedef typename map< string, I >::iterator lbl_iter;

I add(const string& lbl);

};


template <class I, unsigned int MaxInd>
I LblID<I,MaxInd> ::add(const string& lbl)
{
lbl_iter lbli = lbl2id.find(lbl );
if (lbli.compare(l bl2id.end()) != 0)
return (*lbli).second;

if (size() >= MaxInd)
return MaxInd;

I id = size();
lbl2id[lbl] = id;
id2lbl.push_bac k(lbl);
return id;
}

int main (int argc, char *argv[])
{

}

[Julián Albo]

Re: Incorrect template code, or compiler/library bug?

Michael T Decerbo escribió:
[color=blue]
> The code below compiles without warnings or errors under g++ 3.2.1 on
> Solaris, gcc 3.2.2 on Linux, and MSVC 6.0 on Windows.
>
> Under g++ (GCC) 3.3.2, it produces the following errors:[/color]

Compiles fine for me with:

# gcc --version
gcc (GCC) 3.3 20030226 (prerelease) (SuSE Linux)

Perhaps you are using the standard library corresponding to other
version?

Regards.

[grejdanospam@pacbell.net]

Re: Incorrect template code, or compiler/library bug?

On 21 Oct 2003 19:35:51 GMT, Michael T Decerbo <mike@mit.edu > wrote:
[color=blue]
> The code below compiles without warnings or errors under g++ 3.2.1 on
> Solaris, gcc 3.2.2 on Linux, and MSVC 6.0 on Windows.
>
> Under g++ (GCC) 3.3.2, it produces the following errors:
>
> % g++ -Wall testme_std.cpp
> testme_std.cpp: 24: error: no `I LblID<I, MaxInd>::add(co nst
> std::basic_stri ng<char, std::char_trait s<char>, std::allocator< char> >&)'
> member function declared in class `LblID<I, MaxInd>'
> testme_std.cpp: 24: error: template definition of non-template `I LblID<I,
> MaxInd>::add(co nst std::basic_stri ng<char, std::char_trait s<char>,[/color]
// cut[color=blue]
>
> using namespace std;
>
> template <class I, size_t MaxInd>
> class LblID[/color]

// cut[color=blue]
>
> template <class I, unsigned int MaxInd>
> I LblID<I,MaxInd> ::add(const string& lbl)
> {
> lbl_iter lbli = lbl2id.find(lbl );
> if (lbli.compare(l bl2id.end()) != 0)
> return (*lbli).second;
> if (size() >= MaxInd)
> return MaxInd;
> I id = size();
> lbl2id[lbl] = id;
> id2lbl.push_bac k(lbl);
> return id;
> }
>
> int main (int argc, char *argv[])
> {
>
> }
>
>
>
>
>[/color]
is the size_t the same type as unsigned int ?


--
grzegorz

[Michael T Decerbo]

Re: Incorrect template code, or compiler/library bug?

In article <3F958C51.D4D4F B7C@terra.es>,
=?iso-8859-1?Q?Juli=E1n?= Albo <JULIANALBO@ter ra.es> wrote:[color=blue][color=green]
>> Under g++ (GCC) 3.3.2, it produces the following errors:[/color]
>
>Compiles fine for me with:
>
># gcc --version
>gcc (GCC) 3.3 20030226 (prerelease) (SuSE Linux)
>
>Perhaps you are using the standard library corresponding to other
>version?[/color]

You are correct. The system I was using is an Apple Mac OS X machine,
which has some version of the standard library installed under
/usr/include/gcc.

On a Linux system with a fresh install of 3.3.2 there is no error.

Thanks for the help!


Mike

--
Michael Decerbo --- mike@mit.edu