[libdv-dev] [Fwd: [Kino-dev] x86_64 crash explored a bit]

[Dan D. <da...@de...>]

Dean, will you be able to look into this?

-------- Forwarded Message --------
From: Georg Ostertag <ge...@os...>
To: kin...@li...
Subject: [Kino-dev] x86_64 crash explored a bit
Date: Wed, 10 Nov 2004 21:18:25 +0100
Hi,

I am back again with the crash of kino on x86_64 with
the x86_64 optimized libdv.
I attached a gdb to kino while crashing it.

that's what I get:


Single stepping until exit from function g_main_context_iterate,
which has no line number information.
0x0000002a97bcdbbd in g_main_loop_run () from /opt/gnome/lib64/libglib- 
2.0.so.0
(gdb)
Single stepping until exit from function g_main_loop_run,
which has no line number information.

Program received signal SIGSEGV, Segmentation fault.
vlc_num_bits_block_x86_loop () at encode_x86_64.S:135
135             movw    (%rdi), %ax
Current language:  auto; currently asm
(gdb)
Detaching after fork from child process 6701.
0x0000002a98be5f3d in fork () from /lib64/tls/libc.so.6
(gdb) detach



using ltrace to follow what's happening, I find as last words
of kino:


dv_parse_header(0x00e24a70, 0x2a9b02e010, 2, 0xffffffff, 413) = 1
dv_parse_packs(0x00e24a70, 0x2a9b02e010, 0, 64, 0x2a9b02e1f0) =  
0xd8a6a8ff
_ZNSs4_Rep10_M_destroyERKSaIcE(0x01010700, 0x7fbfffd160, 0x01010718, 0,  
2) = 0
dv_decode_full_frame(0x00e24a70, 0x2a9b02e010, 1, 0x7fbfffd5b0,  
0x7fbfffd5a0) =
0
dv_encode_full_frame(0x01182da0, 0x7fbfffd608, 1, 0x2a9bb2b010,  
0x2a9b8e6c10 <un
finished ...>
--- SIGSEGV (Segmentation fault) ---

So I am pretty shure, that there is some bug in the encoding
part of libdv.
Unfortunately, I have no idea how to fix it...

Georg