CAF and patches... (the other patch)

From: Oliver Skelton <oskelton_at_cix.compulink.co.uk>
Date: Fri, 13 Mar 98 01:02 GMT0

As a reminder... there was a previous message from Frank Szymanski stating
that Pure-C needed an additional patch:

> recently I heard from another bug in the Pure-C-Library. Perhaps this can
> solve some problems with CAF 2.06?
>
> ----------------------------- schnipp ------------------------------------
> ::::
> Von: Joergen Von Bargen _at_ HH (Mo, 27.12.93 18:13)
> ::::
> Ursache: Folgendes codefragment in realloc
>
> (reason: following codefragment in realloc)
>
> MOVE.L D0,D1
> MOVE.L D0,-(A7)
> PEA -8(A3)
> MOVE.W #0,-(A7)
> MOVE.W #$4A,-(A7)
> TRAP #1 ; Mshrink
> LEA 12(A7),A7
> TST.L D0
> BNE.B irgendwohin
> MOVE.L D1,-4(A3) ; das ist der hammer (Wow!)
>
> Da wird D1 nicht gerettet bei einem GEMDOS-Trap :-/
>
> (D1 won't be saved in a GEMDOS-Trap)
>
> Dieses Codefragment habe ich in verschiedenen aktuellen Programmen gefunden:
>
> (This codefragment can be found in several current programs:)
>
> Connect, kndinsky.app, triple_d.app, vt52.prg, ease.prg, eh_mgif.ttp, ppc.ttp.
>
> Als Abhilfe kann folgender Patch dienen:
>
> (This cures the problem)
>
> vvvvvvvvvvvv alt (old)vvvvvvvvvv
> 2200 MOVE.L D0,D1
> 2F00 MOVE.L D0,-(A7)
> 486BFFF8 PEA.L -8(A3)
> 3F3C0000 MOVE.W #$0000,-(A7)
> 3F3C004A MOVE.W #$004A,-(A7)
> 4E41 TRAP #1
> 4FEF000C LEA.L 12(A7),A7
> 4A80 TST.L D0
> ^^^^^^^^^^^^ alt (old)^^^^^^^^^^
> vvvvvvvvvvvv neu (new)vvvvvvvvvv
> 2F00 MOVE.L D0,-(A7)
> 2F00 MOVE.L D0,-(A7)
> 486BFFF8 PEA -8(A3)
> 2F3C004A0000 MOVE.L #$004A0000,-(A7)
> 4E41 TRAP #1
> 4FEF000C LEA 12(A7),A7
> 221F MOVE.L (A7)+,D1
> 4A80 TST.L D0
> ^^^^^^^^^^^^ neu (new)^^^^^^^^^^
>
> or shorter:
>
> 22002F00486BFFF83F3C00003F3C004A4E414FEF000C4A80 : old realloc
> 2F002F00486BFFF82F3C004A00004E414FEF000C221F4A80 : new realloc
>
> Dieser Patch kann auch auf die PCSTDLIB.LIB angewendet werden.
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> (This patch also works on PCSTDLIB.LIB :-))
>
> ---------------------------------schnapp-------------------------

I have carefully looked through CAF_206.PRG and neither the first nor
second string appear. I did find them in Kandinsky... so I would still be
interested to know what this fixes - and if it is a useful fix, whether
anyone can easily knock up a patch program like Doug's AB040FIX.PRG.
I guess it would also be interesting to know if it was applicable to 030
machines too (presumably it is?).

Oliver Skelton
Received on fr. mars 13 1998 - 02:18:00 CET