[Scummvm-tracker] [ScummVM :: Bugs] #14546: SCI: Crash in Island of Dr. Brain microscope puzzle

[ScummVM :: Bugs]

#14546: SCI: Crash in Island of Dr. Brain microscope puzzle
-------------------------+----------------------------------
Reporter:  eriktorbjorn  |       Owner:  (none)
    Type:  defect        |      Status:  new
Priority:  normal        |   Component:  Engine: SCI
 Version:                |  Resolution:
Keywords:                |        Game:  Island of Dr. Brain
-------------------------+----------------------------------
Description changed by eriktorbjorn:

Old description:

> Latest ScummVM snapshot
> English "SierraClassics" release of the game
>
> There are at least two ways the microscope puzzle in Island of Dr. Brain
> can crash when asking for a hint, though I've only been able to reproduce
> one of them.
>
> I'm attaching two savegames. One before even starting the microscope
> puzzle (since the puzzle you get is random), and one where opening the
> puzzle and pressing the hint button will always crash with the following
> message:
>
> {{{
> ERROR: Uninitialized read for temp 0 from method cartesian::buyClue (room
> 160, script 165, localCall ffffffff)!
> }}}
>
> The other hint button crash had this message, but I haven't been able to
> reproduce it:
>
> {{{
> ERROR: Invalid arithmetic operation (division - params: 0000:fffd and
> 0000:0000) from method carthesian::buyClue (room 160, script 165,
> localCall ffffffff)!
> }}}

New description:

 Latest ScummVM snapshot
 English "SierraClassics" release of the game

 There are at least two ways the microscope puzzle in Island of Dr. Brain
 can crash when asking for a hint, though I've only been able to reproduce
 one of them.

 I'm attaching two savegames. One before even starting the microscope
 puzzle (since the puzzle you get is random), and one where opening the
 puzzle and pressing the hint button will always crash with the following
 message:

 {{{
 ERROR: Uninitialized read for temp 0 from method cartesian::buyClue (room
 160, script 165, localCall ffffffff)!
 }}}

 The other hint button crash had this message, but I haven't been able to
 reproduce it:

 {{{
 ERROR: Invalid arithmetic operation (division - params: 0000:fffd and
 0000:0000) from method carthesian::buyClue (room 160, script 165,
 localCall ffffffff)!
 }}}

 For the second one, I was playing on my phone so that was using ScummVM
 2.7.

 Annoyingly, since I filed this bug report I have not been able to come up
 with any new test cases, so this bug seems to be a slippery thing.

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Ticket URL: <https://bugs.scummvm.org/ticket/14546#comment:1>
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