jmp to missing label crashes FASM

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bitRAKE

Joined: 21 Jul 2003
Posts: 4075
Location: vpcmpistri

bitRAKE 14 Jan 2008, 04:54

Code:

org $100
  int3
  jmp @B
  ret

I'm only posting this because it took me some time to find what was crashing FASM - maybe, it'll save someone else the trouble. Some over zealous editing deleted the label - which was the first @@: in the code - leaving nothing to jump back to. Rather than error FASM just crashes.

...back to coding...

14 Jan 2008, 04:54

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 14 Jan 2008, 05:24

http://board.flatassembler.net/topic.php?t=8066

14 Jan 2008, 05:24

bitRAKE

Joined: 21 Jul 2003
Posts: 4075
Location: vpcmpistri

bitRAKE 14 Jan 2008, 05:41

thanks, I need to update. Embarassed

14 Jan 2008, 05:41

bitRAKE

Joined: 21 Jul 2003
Posts: 4075
Location: vpcmpistri

bitRAKE 15 Jan 2008, 19:26

More label fun...

Code:

 jmp What..
 jmp What..0

What.:
    nop
.:  jmp .
    nop
.0: jmp .0

This is an interesting 'feature'.

15 Jan 2008, 19:26

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 15 Jan 2008, 19:30

haha yeah but it is not unexpected at all.

15 Jan 2008, 19:30

bitRAKE

Joined: 21 Jul 2003
Posts: 4075
Location: vpcmpistri

bitRAKE 15 Jan 2008, 19:43

Since there are only two levels of label scoping it would be a mistake to assume anything else. For example,

Code:

What.:

.: jmp ..

No such label as "..". Or:

Code:

What.Is:

.what: jmp .Is.what

again...no such label.

15 Jan 2008, 19:43

Picnic

Joined: 05 May 2007
Posts: 1404
Location: Piraeus, Greece

Picnic 15 Jan 2008, 20:09

bitRAKE wrote:

..it took me some time to find what was crashing FASM

he he, same here bitRAKE, i also missed Loco's thread Smile

_________________
Hobby BASIC Interpreter

15 Jan 2008, 20:09

bitRAKE

Joined: 21 Jul 2003
Posts: 4075
Location: vpcmpistri

bitRAKE 15 Jan 2008, 21:28

thimis, I like the Full Board and Full Hex games. I've played versions in the past which required multiple passes over the spaces - certainly adds another dimension to the game.

15 Jan 2008, 21:28

Picnic

Joined: 05 May 2007
Posts: 1404
Location: Piraeus, Greece

Picnic 18 Jan 2008, 23:31

Thanks for the visit bitRAKE. Smile

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Hobby BASIC Interpreter

18 Jan 2008, 23:31

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