Bug#601742: Disassembly

[James Collier]

Disassembly reveals that GST_MINI_OBJECT_GET_CLASS(mini_object) is
returning NULL for mo_class. (See GDB output below).

gstminiobject.c
220     GstMiniObject
221     gst_mini_object_copy (const GstMiniObject *mini_object)
222     {
223       GstMiniObjectClass *mo_class;
224
225       g_return_val_if_fail (mini_object != NULL, NULL);
226
227       mo_class = GST_MINI_OBJECT_GET_CLASS (mini_object);
228
229       return mo_class->copy (mini_object);
230     }

DISASSEMBLY:
0x7ffff74d67d0 <gst_mini_object_copy>           sub    $0x8,%rsp
0x7ffff74d67d4 <gst_mini_object_copy+4>         test   %rdi,%rdi
0x7ffff74d67d7 <gst_mini_object_copy+7>         je     0x7ffff74d67f0
<gst_mini_object_copy+32>
0x7ffff74d67d9 <gst_mini_object_copy+9>         mov    (%rdi),%rax
0x7ffff74d67dc <gst_mini_object_copy+12>        mov    0x8(%rax),%rax
0x7ffff74d67e0 <gst_mini_object_copy+16>        add    $0x8,%rsp
0x7ffff74d67e4 <gst_mini_object_copy+20>        jmpq   *%rax
0x7ffff74d67e6 <gst_mini_object_copy+22>        nopw   %cs:0x0(%rax,%
rax,1)
0x7ffff74d67f0 <gst_mini_object_copy+32>        mov    0x283019(%rip),%
rdi        # 0x7ffff7759810
0x7ffff74d67f7 <gst_mini_object_copy+39>        lea    0x5786a(%rip),%
rdx        # 0x7ffff752e068
0x7ffff74d67fe <gst_mini_object_copy+46>        lea    0x57b6b(%rip),%
rsi        # 0x7ffff752e370 <__PRETTY
0x7ffff74d6805 <gst_mini_object_copy+53>        callq  0x7ffff74a72a0
<g_return_if_fail_warning at plt>

0x7ffff74d680a <gst_mini_object_copy+58>        xor    %eax,%eax
0x7ffff74d680c <gst_mini_object_copy+60>        add    $0x8,%rsp
0x7ffff74d6810 <gst_mini_object_copy+64>        retq
0x7ffff74d6811 data32 data32 data32 data32 data32 nopw %cs:0x0(%rax,%
rax,1

GDB OUTPUT:
p $rax
$1 = 0