[Bug c++/17445] New: too few template-parameter-lists

[Bug c++/17445] New: too few template-parameter-lists

[carlson14 at llnl dot gov]

The following code give this error (compiles fine in 3.3.3):
I don't know if I need to fix my code, or if it is a bug
in 3.4.1.

test.cpp:10: error: too few template-parameter-lists
test.cpp:10: error: expected `,' or `;' before '=' token

template <class T> class MyType {
public:
 static char *name;
};
 
class Sample {
};
 
MyType<Sample> list;
char *MyType<Sample>::name = "Hello\n";
 
 
int main(int argc, char **argv) {
}
gcc -v -save-temps test.cpp 
Reading specs 
from /usr/local/tools/openSource/gcc/3.4.1_tru64_5/bin/../lib/gcc/alphaev67-
dec-osf5.1/3.4.1/specs
Configured with: /usr/global/src/gnu/gcc/gcc-3.4.1/configure --
prefix=/usr/local/tools/gnu/gcc/3.4.1_tru64_5
Thread model: posix
gcc version 3.4.1
 /usr/local/tools/openSource/gcc/3.4.1_tru64_5/bin/../libexec/gcc/alphaev67-
dec-osf5.1/3.4.1/cc1plus -E -quiet -v -
iprefix /usr/local/tools/openSource/gcc/3.4.1_tru64_5/bin/../lib/gcc/alphaev67-
dec-osf5.1/3.4.1/ test.cpp -mcpu=ev67 -o test.ii
ignoring nonexistent 
directory "/usr/local/tools/openSource/gcc/3.4.1_tru64_5/bin/../lib/gcc/alphaev
67-dec-osf5.1/3.4.1/../../../../alphaev67-dec-osf5.1/include"
ignoring duplicate 
directory "/usr/local/tools/gnu/gcc/3.4.1_tru64_5/lib/gcc/alphaev67-dec-
osf5.1/3.4.1/../../../../include/c++/3.4.1"
ignoring duplicate 
directory "/usr/local/tools/gnu/gcc/3.4.1_tru64_5/lib/gcc/alphaev67-dec-
osf5.1/3.4.1/../../../../include/c++/3.4.1/alphaev67-dec-osf5.1"
ignoring duplicate 
directory "/usr/local/tools/gnu/gcc/3.4.1_tru64_5/lib/gcc/alphaev67-dec-
osf5.1/3.4.1/../../../../include/c++/3.4.1/backward"
ignoring duplicate 
directory "/usr/local/tools/gnu/gcc/3.4.1_tru64_5/lib/gcc/alphaev67-dec-
osf5.1/3.4.1/include"
ignoring nonexistent 
directory "/usr/local/tools/gnu/gcc/3.4.1_tru64_5/lib/gcc/alphaev67-dec-
osf5.1/3.4.1/../../../../alphaev67-dec-osf5.1/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/tools/openSource/gcc/3.4.1_tru64_5/bin/../lib/gcc/alphaev67-dec-
osf5.1/3.4.1/../../../../include/c++/3.4.1
 /usr/local/tools/openSource/gcc/3.4.1_tru64_5/bin/../lib/gcc/alphaev67-dec-
osf5.1/3.4.1/../../../../include/c++/3.4.1/alphaev67-dec-osf5.1
 /usr/local/tools/openSource/gcc/3.4.1_tru64_5/bin/../lib/gcc/alphaev67-dec-
osf5.1/3.4.1/../../../../include/c++/3.4.1/backward
 /usr/local/tools/openSource/gcc/3.4.1_tru64_5/bin/../lib/gcc/alphaev67-dec-
osf5.1/3.4.1/include
 /usr/local/include
 /usr/local/tools/gnu/gcc/3.4.1_tru64_5/include
 /usr/include
End of search list.
 /usr/local/tools/openSource/gcc/3.4.1_tru64_5/bin/../libexec/gcc/alphaev67-
dec-osf5.1/3.4.1/cc1plus -fpreprocessed test.ii -quiet -dumpbase test.cpp -
mcpu=ev67 -auxbase test -version -o test.s
GNU C++ version 3.4.1 (alphaev67-dec-osf5.1)
        compiled by GNU C version 3.3.3.
GGC heuristics: --param ggc-min-expand=57 --param ggc-min-heapsize=51200

-- 
           Summary: too few template-parameter-lists
           Product: gcc
           Version: 3.4.1
            Status: UNCONFIRMED
          Severity: critical
          Priority: P1
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: carlson14 at llnl dot gov
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: alphaev67-dec-osf5.1
  GCC host triplet: alphaev67-dec-osf5.1
GCC target triplet: alphaev67-dec-osf5.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-09-13 01:03 -------
You want:
template<>
MyType<Sample> list;
char *MyType<Sample>::name = "Hello\n";

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-09-13 01:03 -------
*** Bug 17446 has been marked as a duplicate of this bug. ***

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[leslie dot barnes at amd dot com]

------- Additional Comments From leslie dot barnes at amd dot com  2005-04-18 06:38 -------
(In reply to comment #2)
> You want:
> template<>
> MyType<Sample> list;
> char *MyType<Sample>::name = "Hello\n";

 The following code seg faults with g++ 3.4.3.  If I remove the "template <>",
it won't compile.  On g++ 3.3, without the "template <>" it is happy and prints
"goodbye".  With the "template <>" it also seg faults.

 I'd like to know if this is a bug, or my inability to figure out the correct
syntax.

 thanks


#include <cstdio>
#include <map>
template <class T> class MyType {
public:
    static std::map<char*,char*> m_map;
};
 
class Sample {
};
 
template class MyType<Sample>;
template <> std::map<char*,char*> MyType<Sample>::m_map;
 
int main(int argc, char **argv) {
    MyType<Sample>::m_map["hello"]="goodbye";
    printf("%s\n",MyType<Sample>::m_map["hello"]);
}


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[giovannibajo at libero dot it]

------- Additional Comments From giovannibajo at libero dot it  2005-04-18 09:08 -------
A segfault in GCC is always a bug, even if the code is wrong. Would you please 
open a new bugreport about it?

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[leslie dot barnes at amd dot com]

------- Additional Comments From leslie dot barnes at amd dot com  2005-04-18 13:37 -------
(In reply to comment #4)
> A segfault in GCC is always a bug, even if the code is wrong. Would you please 
> open a new bugreport about it?

 Sorry, I wasn't clear.  The binary seg faults, not the compiler.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2005-04-18 20:16 -------
This code has at least two bugs: 
 
template class MyType<Sample>; 
template <> std::map<char*,char*> MyType<Sample>::m_map; 
 
First, the instantiation must come *after* the definition of the static 
member. 
Second, the definition you thought you have written is in fact only the  
declaration of an explicit specialization of that member. It needs an 
initializer. You need to write 
 
template <> std::map<char*,char*> MyType<Sample>::m_map 
   = std::map<char*,char*>(); 
 
W. 
 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[leslie dot barnes at amd dot com]

------- Additional Comments From leslie dot barnes at amd dot com  2005-04-19 00:02 -------
(In reply to comment #6)
> This code has at least two bugs: 
>  
> template class MyType<Sample>; 
> template <> std::map<char*,char*> MyType<Sample>::m_map; 
>  
> First, the instantiation must come *after* the definition of the static 
> member. 
> Second, the definition you thought you have written is in fact only the  
> declaration of an explicit specialization of that member. It needs an 
> initializer. You need to write 
>  
> template <> std::map<char*,char*> MyType<Sample>::m_map 
>    = std::map<char*,char*>(); 
>  
> W. 
>  

(In reply to comment #6)
> This code has at least two bugs: 
>  
> template class MyType<Sample>; 
> template <> std::map<char*,char*> MyType<Sample>::m_map; 
>  
> First, the instantiation must come *after* the definition of the static 
> member. 
> Second, the definition you thought you have written is in fact only the  
> declaration of an explicit specialization of that member. It needs an 
> initializer. You need to write 
>  
> template <> std::map<char*,char*> MyType<Sample>::m_map 
>    = std::map<char*,char*>(); 
>  
> W. 
>  

Great, thanks!  If someone could put this on the g++ 3.4.3 changes page, that
would probably save people quite a bit of time.

http://www.gnu.org/software/gcc/gcc-3.4/changes.html

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2005-04-19 14:08 -------
Why? This code as always wrong. It has nothing to do with gcc3.4.x. 
W. 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-25 04:09 -------
*** Bug 21200 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |iguchi at coral dot t dot u-
                   |                            |tokyo dot ac dot jp


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-25 04:12 -------
*** Bug 11930 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |schnetter at uni-tuebingen
                   |                            |dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-25 04:12 -------
*** Bug 14891 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gabriele dot greco at darts
                   |                            |dot it


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-25 04:11 -------
*** Bug 11585 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mueller at kde dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[owen at titan dot com]

------- Additional Comments From owen at titan dot com  2005-07-28 18:47 -------
>From Wolfgang Bangerth:

You need to write:

template <> std::map<char*,char*> MyType<Sample>::m_map 
   = std::map<char*,char*>();

My problem with this is that it requires that the static member support the copy
constructor.  In my case, the static member is something that cannot be copied,
so I put an explicit copy constructor into the private section of my template
class, which makes the above statement generate an error that the copy
constructor is private.  How do I instantiate this static member?  It's default
constructor does all the initialization I want, and I don't want that
initialization done twice.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445

[Bug c++/17445] too few template-parameter-lists

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2005-07-28 19:43 -------
I believe you can't. 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17445