[Mingw-users] Static template members in dll

[Al S. <al....@sc...>]

Hi,

I am having a problem with templated code being exported from a dll.

This is an example as the real code is too complex to produce here :)

Header.h

class myclass
{

};

template <class T> class tclass
{	
	static T record;
}

/*****/

Instant.cpp

#include "Header.h"

myclass tclass<myclass>::record; // instantiate the static record

/* more myclass stuff */

/********/

The above is compiled into a dll using g++ -shared -export-all


When a program is compiled against the above dll (linking directly to
the dll) the program Appears to get its own copy of myclass
tclass<myclass>::record wich appears to override the one in the dll.


Does this ring any bells with anyone?  

I'll try to come up with a real test case in the meantime.

Regards

Al Slater

Senior Developer
Stanton Consultancy