[Help!] Use two different assembly symbol in D, but they are same address.

[a11e99z]

On Sunday, 25 August 2019 at 13:24:57 UTC, lili wrote:
> On Saturday, 24 August 2019 at 12:55:57 UTC, a11e99z wrote:
>> On Saturday, 24 August 2019 at 12:16:34 UTC, lili wrote:
>>> On Saturday, 24 August 2019 at 12:09:19 UTC, a11e99z wrote:
>>>> On Saturday, 24 August 2019 at 11:53:01 UTC, lili wrote:
>>>>>  [...]
>>>>
>>>> resb 8
>>>> just reserving 8 bytes not initializing it.
>>>> probably u compare some garbage. sometimes it equals, 
>>>> sometimes not.
>>>> no?
>>>
>>> I write wrong, not  if (_vga_x == _vga_y) but if (&_vga_x == 
>>> &_vga_y)
>>
>> try to do next:
>> add funtion in asm that returns real addresses to vga_x,y
>> extern(C) void asmVgas( int** px, int** py)
>> call it
>> int *px, *py;
>> asmVgas( &px, &py);
>> writefln( "%s=%s,%s=%s",px, &_vga_x,py, &_vga_y);
>> and see result
>
> I followed your suggest, call asm_fn in d function. it return 
> address not 0 but is a correct
> address same as the var address show in link map file.
> when a try define a __shared int xx, the &xx also 0.
> after linked all variables address is 0 that in .bss segment.
> do you know why occur this?
>
> [global asm_fn]
> asm_fn:
> 	mov rax, p2_table
> 	ret

no idea.

u can to define _vga_x,_vga_y in D code and export it to asm 
(vice versa than now).
see result again.

in case still not working:
make very simple app with global vars: 2 D-files OR 1 D-file and 
1 asm-file
(maybe its not working even for D+D files).
try to get same bug from compiler/linker.
fill the issue and attach both files as sample.
add point (for case D+asm) "how to compile asm file for linking 
with D" as u did.
then wait and hope.