x64 call instruction E8 00 00 00 00?

[Trass3r]

Thanks for shedding some light on this.

I wonder though why disassembling "works" in some cases and 
sometimes not:
>int foo()
>{
>       asm
>       {
>               naked;
>               mov RAX, 1;
>       }
>}
>void main()
>{
>       int i = foo();
>}

yields

>0000000000000000 <_Dmain>:
>  0:	55                   	push   rbp
>  1:	48 8b ec             	mov    rbp,rsp
>  4:	e8 00 00 00 00       	call   9 <_Dmain+0x9>
>			5: R_X86_64_PC32	_D4test3fooFZi-0x4
>  9:	31 c0                	xor    eax,eax
>  b:	5d                   	pop    rbp
>  c:	c3                   	ret

while
>void foo() {}
>void bar() {foo();}

turns into
>0000000000000000 <_D5test23barFZv>:
>  0:	55                   	push   rbp
>  1:	48 8b ec             	mov    rbp,rsp
>  4:	e8 00 00 00 00       	call   9 <_D5test23barFZv+0x9>
>			5: R_X86_64_PC32	_D5test23fooFZv-0x4
>  9:	5d                   	pop    rbp
>  a:	c3                   	ret