[Scummvm-tracker] [ScummVM] #10710: QFG4: Crash when trying to parry with a dagger and a Thief with no Parry skill

[Stephane Lapie]

#10710: QFG4: Crash when trying to parry with a dagger and a Thief with no Parry
skill
-----------------------+-------------------------------
Reporter:  darksoul42  |      Owner:  (none)
    Type:  defect      |     Status:  new
Priority:  normal      |  Component:  Engine: SCI
Keywords:  sci32       |       Game:  Quest for Glory 4
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 On this version of ScummVM:
 ScummVM 2.1.0git (Sep  9 2018 17:36:39)
 Features compiled in: Vorbis FLAC MP3 ALSA SEQ TiMidity RGB zLib MPEG2
 FluidSynth Theora AAC FreeType2 JPEG PNG

 I just started a Thief character with no magic and no parry skill at all,
 and tried to fight a Wraith. When going to strategy mode, it seems it
 tried to parry but this caused the following error and crash:

 WARNING: Uninitialized read for parameter 2 from method CT::init (room
 810, script 64992, localCall ffffffff)!
 WARNING: Uninitialized read for parameter 2 from method CT::init (room
 810, script 64992, localCall ffffffff)!
 ERROR: Invalid arithmetic operation (bitwise OR - params: 0035:1999 and
 0000:0001) from method xParryLow::doit (room 810, script 41, localCall
 ffffffff)!

 Strangest was that it seems possible to parry without crashing when doing
 it by hand.

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Ticket URL: <https://bugs.scummvm.org/ticket/10710>
ScummVM <https://bugs.scummvm.org>
ScummVM