Request help debugging octave-video in mxe-octave

[Andreas Weber]

Dear maintainers,

I need some help debugging octave-video with ffmpeg in mxe-octave.
Sometimes I get a strange segmentation fault in the AVHandler destructor.

What I've done so far:
Crosscompile mxe-octave on Debian Jessie with
$ ./configure --disable-strip-dist-files --enable-devel-tools 
--enable-binary-packages
$ make gdb ffmpeg zip-dist

In Windows7, extract zip, and grab code from 
http://sourceforge.net/p/octave/video/ci/default/tree/
run octave in CLI mode, getpid, attach gdb.

Back in Octave:
>> cd octave/video/src
>> test avifile

This sometimes works (PASS 1/1) and sometimes fails at different places:

----------------------------------------------------
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 2648.0x7f4]
0x7795e3c6 in ntdll!RtlInitUnicodeString () from 
C:\Windows\SysWOW64\ntdll.dll
(gdb)
Continuing.

--------------------------------------------------
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 3212.0xe9c]
0x77963aa8 in ntdll!RtlQueryPerformanceCounter ()
   from C:\Windows\SysWOW64\ntdll.dll
(gdb) bt
#0  0x77963aa8 in ntdll!RtlQueryPerformanceCounter ()
   from C:\Windows\SysWOW64\ntdll.dll
#1  0x77962c7a in ntdll!RtlQueryPerformanceCounter ()
   from C:\Windows\SysWOW64\ntdll.dll
#2  0x77962b65 in ntdll!RtlQueryPerformanceCounter ()
   from C:\Windows\SysWOW64\ntdll.dll
#3  0x76b698cd in msvcrt!free () from C:\Windows\syswow64\msvcrt.dll
#4  0x17aa0000 in ?? ()
#5  0x1c0159fe in avpriv_mpa_decode_header ()
   from C:\octave-dbg\octave-4.0.0\bin\avcodec-56.dll
#6  0x1c3bcce9 in avcodec-56!av_dct_end ()
   from C:\octave-dbg\octave-4.0.0\bin\avcodec-56.dll
#7  0x1c3ce86e in avcodec_close ()
   from C:\octave-dbg\octave-4.0.0\bin\avcodec-56.dll
#8  0x6660167c in AVHandler::~AVHandler (this=0x1bacd708,
    __in_chrg=<optimized out>) at AVHandler.cc:83
#9  0x6660384a in Avifile::~Avifile (this=0x1bc20c90,

---------------------------------------------------------
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 3184.0xe48]
0x77962e33 in ntdll!RtlQueryPerformanceCounter ()
   from C:\Windows\SysWOW64\ntdll.dll
(gdb) bt
#0  0x77962e33 in ntdll!RtlQueryPerformanceCounter ()
   from C:\Windows\SysWOW64\ntdll.dll
#1  0x77962b65 in ntdll!RtlQueryPerformanceCounter ()
   from C:\Windows\SysWOW64\ntdll.dll
#2  0x76b698cd in msvcrt!free () from C:\Windows\syswow64\msvcrt.dll
#3  0x17a70000 in ?? ()
#4  0x0128b8bc in ~ArrayRep (this=0x1bbfaa70, __in_chrg=<optimized out>)
    at 
/home/andy/src/mxe-octave/tmp-stable-octave/octave-4.0.0/liboctave/array/
Array.h:89
#5  Array<double>::~Array (this=0x0, __in_chrg=<optimized out>)
    at 
/home/andy/src/mxe-octave/tmp-stable-octave/octave-4.0.0/liboctave/array/
Array.h:223
#6  0x011e3b83 in ~MArray (this=0x1bb13a40, __in_chrg=<optimized out>)
    at 
/home/andy/src/mxe-octave/tmp-stable-octave/octave-4.0.0/liboctave/array/
MArray.h:63
#7  ~NDArray (this=0x1bb13a40, __in_chrg=<optimized out>)
    at 
/home/andy/src/mxe-octave/tmp-stable-octave/octave-4.0.0/liboctave/array/
dNDArray.h:35
#8  ~octave_base_matrix (this=0x1bb13a38, __in_chrg=<optimized out>)
    at 
/home/andy/src/mxe-octave/tmp-stable-octave/octave-4.0.0/libinterp/octave
-value/ov-base-mat.h:68
#9  ~octave_matrix (this=0x1bb13a38, __in_chrg=<optimized out>)
    at 
/home/andy/src/mxe-octave/tmp-stable-octave/octave-4.0.0/libinterp/octave
-value/ov-re-mat.h:97

Any ideas what I could try?
Thank you, Andy