[avr-gcc-list] jump_to_null question

[Dr. Jan Menzel]

Hi all!
	I'm currently working on a bootloader for Mega8 and 88 and found a 
problem I do not yet understand. At the end of the bootloader the code
has to jump to the main reset vector at address 0x0000. If I do the
usual way
        void (*jump_to_null)(void) = 0x0000;
gcc 3.4.6 complies:
        LDI     R30, 0x0102
        LDI     R31, 0x0103
        ICALL
and everything works fine, as expected.
        But if I try to be more specific and define
        void (* const jump_to_main)(void) = 0x0000;
gcc 3.4.6 complies
        RCALL   PC-0x0009
which unfortunately does not what I intended.
	Could anyone please point me to my error in reasoning or lack of 
understanding? Many thanks!

        Best regards
                Jan