Stack overflow at $416C95

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bitRAKE

Joined: 21 Jul 2003
Posts: 4061
Location: vpcmpistri

bitRAKE 23 Nov 2010, 11:47

Code:

; map
macro F {
 macro G H,[I] \{ common
  match J!K,I \\{
   F
   H J
   G H,K \\} \}} F

G mov,eax,ebx!ebx,ecx!!

It works with a different separator character.

Stack looks like:

FASMW.EXE!004166ec()
FASMW.EXE!00416a61()
FASMW.EXE!00416409()
.
.
.
FASMW.EXE!00416a61()
FASMW.EXE!00416319()
FASMW.EXE!00416a61()
FASMW.EXE!00416409()
FASMW.EXE!00416a61()
FASMW.EXE!00416319()
FASMW.EXE!004155ed()
FASMW.EXE!00415562()
FASMW.EXE!0041490d()
kernel32.dll!75493677()

Latest version of course.

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23 Nov 2010, 11:47

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8357
Location: Kraków, Poland

Tomasz Grysztar 23 Nov 2010, 11:52

bitRAKE wrote:

It works with a different separator character.

! is not a special character in fasm, it becomes a part of name. So the bug demonstration can be reduced to:

Code:

; map
macro F { 
 macro G H,[I] \{ common 
  match JK,I \\{
   F 
   H J 
   G H,K \\} \}} F 

G mov,eax,ebx

Obviosly we have an infinite recursion here - but for some reason the fasm's stack overflow detection fails in this case...

23 Nov 2010, 11:52

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8357
Location: Kraków, Poland

Tomasz Grysztar 23 Nov 2010, 11:59

Console version signals the error correctly - so it is a bug in FASMW.

PS I corrected the highlighting algorithm of this board to match the FASMW's one with respect to "!" character.

23 Nov 2010, 11:59

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8357
Location: Kraków, Poland

Tomasz Grysztar 23 Nov 2010, 12:04

Yeah, stack overflow detector was not set up correctly by FASMW, so it was not working at all. Version 0.95.03 has it corrected.

23 Nov 2010, 12:04

bitRAKE

Joined: 21 Jul 2003
Posts: 4061
Location: vpcmpistri

bitRAKE 23 Nov 2010, 12:15

Thank you, for the speedy reply.
Luckily, I didn't notice my mistake until afterwards.

23 Nov 2010, 12:15

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