This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Static variables in templates
- From: Ravikiran Rajagopal <ravi at ee dot eng dot ohio-state dot edu>
- To: gcc at gcc dot gnu dot org
- Date: Fri, 31 May 2002 17:54:29 -0400
- Subject: Static variables in templates
Hello,
I cannot initialize static variables in templates on HPUX 11. The following
code compiles and works as you would expect it to on Linux, but fails with a
linker error in HPUX. The error message follows the program listing. My
compiler version is gcc-3.1 (built from sources) with binutils-2.12 (built
from sources).
--- test.cc ---
// Template definition
template<class T>
class foo
{
public:
foo(T v) : var(v) { times++; };
T var;
static int times;
};
template<class T>
int foo<T>::times = 0;
// Now we use this template.
int main( int , char ** )
{
foo<int> a(23);
return 0;
}
---------------
On HPUX, it fails with the following linker error:
---------------
eehp015:~/misc> gcc -o test test.cc
/usr/ccs/bin/ld: Unsatisfied symbols:
foo<int>::times (first referenced in /var/tmp//ccikfnVs.o) (data)
collect2: ld returned 1 exit status
---------------
Any pointers would be greatly appreciated. This construct is very important,
because large parts of KDE 3.x code depend on it. I am trying to port KDE 3.x
to HPUX with gcc 3.1 release. Please cc any replies/follow-ups to me as I am
not subscribed to the list. In case this is the wrong place to ask this
question, I apologize and request you to kindly direct me to the right fora.
Thank you,
Ravi