[Gnash-commit] [bug #27952] --disable-media doesn't disable sound, but results in assertion failures

[Nutchanon Wetchasit]

Follow-up Comment #6, bug #27952 (project gnash):

On Gnash 0.8.10, the build process went on without error, but as soon as
`pcmplay.swf` issued `Sound.start()` action, Gnash crashed.

Running `gui/gnash -vv -t 10 pcmplay.swf` from build tree:

8679:1] 125 ERROR: Couldn't find pixmap file: GnashG.png

** (lt-gtk-gnash:8679): WARNING **: Couldn't find pixmap file: GnashG.png
8679:1] 126 DEBUG: gnash::GtkAggGlue::GtkAggGlue() enter
8679:1] 126 DEBUG: gnash::GtkAggGlue::GtkAggGlue() returning
8679:1] 126 DEBUG: virtual bool gnash::GtkAggGlue::init(int, char***) enter
8679:1] 126 DEBUG: virtual bool gnash::GtkAggGlue::init(int, char***)
returning
8679:1] 224 DEBUG: gnash_canvas_size_allocate 219 1
8679:1] 224 DEBUG: virtual void gnash::GtkAggGlue::prepDrawingArea(GtkWidget*)
enter
8679:1] 224 DEBUG: virtual void gnash::GtkAggGlue::prepDrawingArea(GtkWidget*)
returning
8679:1] 224 DEBUG: virtual gnash::Renderer*
gnash::GtkAggGlue::createRenderHandler() enter
8679:1] 227 DEBUG: Framebuffer pixel format is BGRA32 (little-endian host)
8679:1] 227 DEBUG: virtual gnash::Renderer*
gnash::GtkAggGlue::createRenderHandler() returning
8679:1] 227 DEBUG: virtual void gnash::GtkAggGlue::setRenderHandlerSize(int,
int) enter
8679:1] 227 DEBUG: virtual void gnash::GtkAggGlue::setRenderHandlerSize(int,
int) returning
8679:1] 228 DEBUG: /home/window/build/gnashgit/ appended to local sandboxes
8679:1] 228 DEBUG: /home/window/build/gnashgit/pcmplay.swf appended to local
sandboxes
8679:1] 228 SECURITY: Checking security of URL
'file:///home/window/build/gnashgit/pcmplay.swf'
8679:1] 228 SECURITY: Load of file /home/window/build/gnashgit/pcmplay.swf
granted (under local sandbox /home/window/build/gnashgit/)
8679:1] 229 DEBUG: Movie file:///home/window/build/gnashgit/pcmplay.swf (SWF8)
added to library
8679:1] 286 DEBUG: Invalid SOL safe dir /home/window/.gnash/SharedObjects: No
such file or directory. Will try to create on flush/exit.
8679:1] 288 SECURITY: Extensions disabled
8679:1] 304 DEBUG: Advance interval timer set to 10 ms (~ 100 FPS)
8679:1] 305 DEBUG: Loading native class MovieClip
8679:1] 306 DEBUG: Loading native class Sound
8679:1] 312 DEBUG: Sound.start: secOff:0
Segmentation fault (core dumped)


Exerpt from GDB backtrace gathered from core dump:

Core was generated by `/home/window/build/gnashgit/gui/.libs/lt-gtk-gnash -vv
-t 10 pcmplay.swf'.
Program terminated with signal 11, Segmentation fault.
[New process 8679]
#0  gnash::sound::LiveSound::createDecoder (this=0xb5123d80, address@hidden, 
    address@hidden) at LiveSound.cpp:50
50          _decoder.reset(mh.createAudioDecoder(info).release());


Backtrace shows NULL pointer dereference in libsound's
`LiveSound::CreateDecoder()` as it tries to call `mh.createAudioDecoder()`
<http://git.savannah.gnu.org/cgit/gnash.git/tree/libsound/LiveSound.cpp?id=0.8.10#n50>
but the `MediaHandler mh` argument given to the function is `NULL`. My guess
is because there's no media handler configured, and both `LiveSound` and its
invoker (`EmbedSound`) didn't check for this possibility.

Full GDB backtrace is attached as
`pcmplay_gnash0.8.10.disable-media.gdb.log`.

Configure options and test SWF file used is the same as previous post.

Gnash: 0.8.10 (git)
System: Debian GNU/Linux 5.0 Lenny i386


(file #37055)
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Additional Item Attachment:

File name: pcmplay_gnash0.8.10.disable-media.gdb.log Size:111 KB


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