static member initialization in templates

[gbs]

Isn't this legal code to initialize a static member of a template
class?

template <class T>
class TemplatedClassT
{
static int staticMember_;
};
class A
{
//....
};

//...
//...initialize
//...
int TemplatedClassT<A>::staticMember_ = 0;

GCC 3.4.1 is rejecting it. But, how else could
TemplatedClassT<A>::staticMember_ be initialized?

Greg Silverman
Northrop Grumman
San Jose, CA

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[Jacek Dziedzic]

gbs wrote:

Isn't this legal code to initialize a static member of a template
class?

template <class T>
class TemplatedClassT
{
static int staticMember_;
};
class A
{
//....
};

//...
//...initialize
//...
int TemplatedClassT<A>::staticMember_ = 0;

GCC 3.4.1 is rejecting it. But, how else could
TemplatedClassT<A>::staticMember_ be initialized?

Are you 100% sure that the initialization happens only once,
ie. that the file containing
int TemplatedClassT<A>::staticMember_ = 0;
is included only once?

HTH,
- J.

[Rob Williscroft]

Jacek Dziedzic wrote in news:ch**********@korweta.task.gda.pl in
comp.lang.c++:

gbs wrote:

Isn't this legal code to initialize a static member of a template
class?

template <class T>
class TemplatedClassT
{
static int staticMember_;
};
class A
{
//....
};

The following is an explicit specialization (of a member),
It should be preceded with:

template <>
int TemplatedClassT<A>::staticMember_ = 0;

GCC 3.4.1 is rejecting it. But, how else could
TemplatedClassT<A>::staticMember_ be initialized?

Are you 100% sure that the initialization happens only once,
ie. that the file containing
int TemplatedClassT<A>::staticMember_ = 0;
is included only once?

test.cpp:20: error: too few template-parameter-lists
test.cpp:20: error: expected `,' or `;' before '=' token

Rob.
--
http://www.victim-prime.dsl.pipex.com/

[Falk Tannhäuser]

X-ReplaceAddress:yes
gbs wrote:

Isn't this legal code to initialize a static member of a template
class?

template <class T>
class TemplatedClassT
{
static int staticMember_;
};

template<typename T>
int TemplatedClassT<T>::staticMember_ = 0;

Falk Tannhäuser

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[Greg Comeau]

In article <69*************************@posting.google.com> ,
gbs <gb*@netbox.com> wrote:

Isn't this legal code to initialize a static member of a template
class?

template <class T>
class TemplatedClassT
{
static int staticMember_;
};
class A
{
//....
};

//...
//...initialize
//...
int TemplatedClassT<A>::staticMember_ = 0;

GCC 3.4.1 is rejecting it. But, how else could
TemplatedClassT<A>::staticMember_ be initialized?

By prefixing it with 'template <>'
--
Greg Comeau / Comeau C++ 4.3.3, for C++03 core language support
Comeau C/C++ ONLINE ==> http://www.comeaucomputing.com/tryitout
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[Ben Hutchings]

gbs wrote:

Isn't this legal code to initialize a static member of a template
class?
No.
template <class T>
class TemplatedClassT
{
static int staticMember_;
};
class A
{
//....
};

//...
//...initialize
//...
int TemplatedClassT<A>::staticMember_ = 0;
You must begin every full specialisation with "template<>". Just add
that at the beginning of this declaration.
GCC 3.4.1 is rejecting it. But, how else could
TemplatedClassT<A>::staticMember_ be initialized?

[ See http://www.gotw.ca/resources/clcm.htm for info about ]
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