static class member as interrupt handler works, but not if class is templated

[Klaus Rudolph via Gcc-help <gcc-help@xxxxxxxxxxx>]

Hi all,

if I write a class with static member function I can use it as an
interrupt handler as follows:

class Dummy
{
    static void Handler() __asm__("__vector_10")
__attribute__((__signal__, __used__, __externally_visible__));
};

void Dummy::Handler()
{

}

I can see the vector is entered in the handler table:



  1c:	0c 94 34 00 	jmp	0x68	; 0x68 <__bad_interrupt>
  20:	0c 94 34 00 	jmp	0x68	; 0x68 <__bad_interrupt>
  24:	0c 94 34 00 	jmp	0x68	; 0x68 <__bad_interrupt>
  28:	0c 94 36 00 	jmp	0x6c	; 0x6c <__vector_10>
  2c:	0c 94 34 00 	jmp	0x68	; 0x68 <__bad_interrupt>
  30:	0c 94 34 00 	jmp	0x68	; 0x68 <__bad_interrupt>

###################

But if the class becomes a template, the function is not longer entered
in the handler. How can I fix it?

template < int i >
class Dummy
{
    static void Handler() __asm__("__vector_10")
__attribute__((__signal__, __used__, __externally_visible__));
};

template < int i>
void Dummy<i>::Handler()
{

}

Dummy<1> d1;

  20:	0c 94 3c 00 	jmp	0x78	; 0x78 <__bad_interrupt>
  24:	0c 94 3c 00 	jmp	0x78	; 0x78 <__bad_interrupt>
  28:	0c 94 3c 00 	jmp	0x78	; 0x78 <__bad_interrupt>
  2c:	0c 94 3c 00 	jmp	0x78	; 0x78 <__bad_interrupt>
  30:	0c 94 3c 00 	jmp	0x78	; 0x78 <__bad_interrupt>


I tried it with avr-g++ (Fedora 10.2.0-1.fc33) 10.2.0

Thanks!