[Scummvm-tracker] [ScummVM :: Bugs] #15215: SCUMM: DIG: Error box 29 is out of bounds in ScummVM 2.8.1

[ScummVM :: Bugs]

#15215: SCUMM: DIG:  Error box 29 is out of bounds in ScummVM 2.8.1
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Reporter:  zoltan808080            |       Owner:  athrxx
    Type:  defect                  |      Status:  closed
Priority:  normal                  |   Component:  Engine: SCUMM
 Version:                          |  Resolution:  fixed
Keywords:  The Dig box out bounds  |        Game:  The Dig
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Comment (by AndywinXp):

 In [changeset:"ec98389ca5cc5240c7fddb9c21bf18a58cdc6f87" ec98389c]:
 {{{#!CommitTicketReference repository=""
 revision="ec98389ca5cc5240c7fddb9c21bf18a58cdc6f87"
 SCUMM: DIG/DiMUSE: Post-load fix for corrupted savegames

 Fixes #16287:

 "SCUMM: DIG: Game crashes when moving to another area"

 There has been a small wave of corrupted savegames which
 were seemingly connected to ticket #15215:

 "SCUMM: DIG: Error box 29 is out of bounds in ScummVM 2.8.1"

 In affected savegames, the _attributes array from the iMUSE system
 seems to contain byteswapped 32-bit values in a few of the slots,
 suggesting some kind of data corruption happening behind the scenes.

 While the issue was solved in eefca8b ("SCUMM: (DIG) - fix
 setActorWalkSpeed"),
 there is no guarantee that a previous savegame won't be affected and won't
 cause
 a chain reaction in playDigMusic(), causing an out of bounds array read.

 This is a pretty reliable way to detect if the savegame was corrupted.

 Hopefully.
 }}}
-- 
Ticket URL: <https://bugs.scummvm.org/ticket/15215#comment:54>
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