[vlc-devel] crashed libvlccore.dll

xxcv xxcv07 at gmail.com
Fri Aug 28 01:29:29 CEST 2009

Rafaël Carré wrote:
>> 0x000000006a598c54:     mov    (%rbx),%rcx
> you can show the registers with "info registers" in gdb, so we can see
> for example if it is a NULL dereference
Here's gdb output with info registers, sorry there was no backtrace 
because gdb doesn't show any.

Program received signal SIGSEGV, Segmentation fault.
[Switching to thread 9004.0x23ac]
0x000000006a598c54 in ?? ()
(gdb) warning: Invalid parameter passed to C runtime function.

disass $pc-30 $pc+30
Dump of assembler code from 0x6a598c36 to 0x6a598c72:
0x000000006a598c36:     add    %al,0x88be(%rax)
0x000000006a598c3c:     add    %al,(%rax)
0x000000006a598c3e:     movq   $0x0,0x18(%r13)
0x000000006a598c46:     movl   $0x0,0x20(%r13)
0x000000006a598c4e:     jne    0x6a598f33
0x000000006a598c54:     mov    (%rbx),%rcx
0x000000006a598c57:     test   %rcx,%rcx
0x000000006a598c5a:     je     0x6a598c66
0x000000006a598c5c:     cmpl   $0x2,0x8(%rcx)
0x000000006a598c60:     je     0x6a599120
0x000000006a598c66:     mov    %r13,(%rbx)
0x000000006a598c69:     add    $0x8,%rdi
0x000000006a598c6d:     cmp    $0x1,%r15d
0x000000006a598c71:     mov    $0x1,%r12d
End of assembler dump.
(gdb) info registers
rax            0x0      0
rcx            0x0      0
rdx            0x0      0
rbx            0x17afc0 1552320
rsp            0xec0fa90        247528080
rbp            0xec0faf0        247528176
rsi            0xec0fbc0        247528384
rdi            0x273de08        41147912
r8             0x0      0
r9             0x0      0
r10            0x0      0
r11            0x0      0
r12            0x273e320        41149216
r13            0x9d     157
r14            0x273b3e0        41137120
r15            0x0      0
rip            0x6a598c54       0x6a598c54
eflags         0x10246  [ PF ZF IF RF ]
cs             0x33     51
ss             0x2b     43
ds             0x2b     43
es             0x2b     43
fs             0x53     83
gs             0x2b     43


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