[Scummvm-tracker] [ScummVM :: Bugs] #16768: NANCY: Regression: null VideoDecoder on Second Chance

[ScummVM :: Bugs]

#16768: NANCY: Regression: null VideoDecoder on Second Chance
-------------------------------------------------+-------------------------
Reporter:  tunnelsociety                         |      Owner:  (none)
    Type:  defect                                |     Status:  new
Priority:  high                                  |  Component:  Engine:
                                                 |  Nancy
 Version:                                        |   Keywords:
    Game:  Nancy Drew: Message in a Haunted      |
  Mansion                                        |
-------------------------------------------------+-------------------------
 The scene should be culprit bagging the gold. (I ran up the squeaky stairs
 🤦‍♂️ but great, discovered this issue!)

 Attached is the Second Chance save (*.008). (It was created with master
 but loads in v2026.2.0.)

 ScummVM 2026.2.1git4703-gc12b658bfc8 (May  6 2026 17:59:35)

 {{{
 Loading new scene 4470: description "End Game Fill Bag ", frame 0,
 vertical scroll 0, kLoadSceneSound
 engines/nancy/action/secondarymovie.cpp:140:12: runtime error: member call
 on null pointer of type 'Video::VideoDecoder'
 SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
 engines/nancy/action/secondarymovie.cpp:140:12
 AddressSanitizer:DEADLYSIGNAL
 =================================================================
 ==31984==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000
 (pc 0x55bb1f5d6fcc bp 0x7fff1671ee70 sp 0x7fff1671ee30 T0)
 ==31984==The signal is caused by a READ memory access.
 ==31984==Hint: address points to the zero page.
     #0 in Video::VideoDecoder::pauseVideo(bool) video/video_decoder.cpp
     #1 in Nancy::Action::PlaySecondaryMovie::onPause(bool)
 engines/nancy/action/secondarymovie.cpp:140:12
     #2 in Nancy::Action::ActionManager::onPause(bool)
 engines/nancy/action/actionmanager.cpp:601:7
     #3 in Nancy::State::Scene::onStateExit(Nancy::NancyState::NancyState)
 engines/nancy/state/scene.cpp:217:17
     #4 in Nancy::NancyEngine::run() engines/nancy/nancy.cpp:337:12
 }}}

 Looks like it loads fine in release 2026.2.0. Bisecting...

 {{{
 $ git bisect good
 b10ffc5ad50fc067ddb11cad5313c847b85cdf38 is the first bad commit

 commit b10ffc5ad50fc067ddb11cad5313c847b85cdf38
 Date:   Wed Apr 29 23:18:43 2026 +0300

     NANCY: Show the scene directly after loading from launcher or the GMM

     Fix #16717

  engines/nancy/state/scene.cpp | 1 +
  1 file changed, 1 insertion(+)
 }}}
-- 
Ticket URL: <https://bugs.scummvm.org/ticket/16768>
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