Bug when using BTC

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revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20489
Location: In your JS exploiting you and your system

revolution 20 Sep 2005, 09:30

This doesn't compile without error:

Code:

btc eax,6+8 ;<-- error: invalid operand.

But the following is okay:

Code:

btc eax,14

20 Sep 2005, 09:30

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8363
Location: Kraków, Poland

Tomasz Grysztar 20 Sep 2005, 10:23

???
Works for me.

20 Sep 2005, 10:23

tango

Joined: 05 Apr 2004
Posts: 5
Location: Italy

tango 20 Sep 2005, 10:38

Quote:

???
Works for me.

For me too not works (same situation as revolution).. Confused

I use the version of september 12.

20 Sep 2005, 10:38

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8363
Location: Kraków, Poland

Tomasz Grysztar 20 Sep 2005, 10:55

Sorry, but I'm not able to reproduce the bug. Please give more details about version and OS, and the minimum source that causes the problems.

20 Sep 2005, 10:55

tango

Joined: 05 Apr 2004
Posts: 5
Location: Italy

tango 20 Sep 2005, 11:57

Quote:

Sorry, but I'm not able to reproduce the bug. Please give more details about version and OS, and the minimum source that causes the problems.

Fasm 1.64 (12 sept) - WinXP HE SP2.
I've made some test.....
If i write:

btc [hinstance],ebx
btc eax,16+8
(hinstance is a dword)

this works, without error.

If i add, at the top:

btc ax,bx <-- added
btc ax,16+8 <-- added
btc [hinstance],ebx
btc eax,16+8 <-- ERROR

This give an error at the last line.. (invalid operand) Confused

Writing this 4 lines in different order:

btc [hinstance],ebx
btc eax,16+8
btc ax,bx
btc ax,16+8 <-- ERROR

This give an error at the last line.. (invalid operand) Confused

Maybe there is a bug in X86_64.inc, at the label 'bt_instruction:'..(?)

20 Sep 2005, 11:57

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20489
Location: In your JS exploiting you and your system

revolution 20 Sep 2005, 12:12

Code:

;minimal code
btc eax,6+8 ;Ok
btc eax,6+8 ;Ok
btc eax,6+8 ;Error.

20 Sep 2005, 12:12

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8363
Location: Kraków, Poland

Tomasz Grysztar 20 Sep 2005, 12:26

tango: thanks - this is what I call good bug report. Smile

It's fixed now.

20 Sep 2005, 12:26

tango

Joined: 05 Apr 2004
Posts: 5
Location: Italy

tango 20 Sep 2005, 12:38

Tomasz Grysztar wrote:

tango: thanks - this is what I call good bug report.
It's fixed now.

Many thanks! Smile

20 Sep 2005, 12:38

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