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8 years ago juser@dhcp186:~/python-video4linux2$ gdb python
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...
(gdb) run
Starting program: /usr/bin/python
[Thread debugging using libthread_db enabled]
Python 2.5.2 (r252:60911, Oct 5 2008, 19:24:49)
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
[New Thread 0xb7e488c0 (LWP 5943)]
>>> import pyv4l2
>>> d=pyv4l2.Device('/dev/video1')
>>> d.QueryCaps()
>>> print d.driver, d.card
spca561 Camera
>>> print d.caps
['Capture', 'ReadWrite', 'Streaming']
>>> print d.capabilities
{'VideoOutputOverlay': 512, 'Capture': 1, 'VBICapture': 16, 'SlicedVBICapture':
64,
'ReadWrite': 16777216, 'Overlay': 4, 'Radio': 262144, 'Audio': 131072,
'SlicedVBIOutput': 128, 'Streaming': 67108864, 'RDSCapture': 256, 'Tuner':
65536,
'Output': 2, 'VBIOutput': 32, 'AsyncIO': 33554432}
>>> x=d.GetResolutions()
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7e488c0 (LWP 5943)]
0xb7eb4ff9 in malloc_consolidate (av=0xb7f89140) at malloc.c:4860
4860 malloc.c: No such file or directory.
in malloc.c
(gdb) bt full
#0 0xb7eb4ff9 in malloc_consolidate (av=0xb7f89140) at malloc.c:4860
fb = (mfastbinptr *) 0xb7f89150
maxfb = (mfastbinptr *) 0xb7f8916c
p = (mchunkptr) 0x8a0a668
nextp = (mchunkptr) 0x0
unsorted_bin = (mchunkptr) 0xb7f89170
first_unsorted = <value optimized out>
nextchunk = (mchunkptr) 0x8a0a688
size = 80
nextsize = 48
prevsize = <value optimized out>
bck = (mchunkptr) 0x160
fwd = (mchunkptr) 0x1
#1 0xb7eb70e5 in _int_malloc (av=0xb7f89140, bytes=8208) at malloc.c:4184
nb = 8216
idx = 107
bin = <value optimized out>
victim = (mchunkptr) 0x89a2c90
size = <value optimized out>
victim_index = <value optimized out>
remainder = <value optimized out>
remainder_size = <value optimized out>
block = <value optimized out>
bit = <value optimized out>
map = <value optimized out>
fwd = <value optimized out>
bck = <value optimized out>
#2 0xb7eb904c in *__GI___libc_malloc (bytes=8208) at malloc.c:3551
ar_ptr = (mstate) 0xb7f89140
victim = (void *) 0x89a2c90
hook = <value optimized out>
#3 0x080eb016 in PyArena_New () at ../Python/pyarena.c:83
No locals.
#4 0x080eda3a in PyRun_InteractiveOneFlags (fp=0xb7f88420,
filename=0x8128462 "<stdin>", flags=0xbfbef378)
at ../Python/pythonrun.c:766
m = <value optimized out>
d = <value optimized out>
v = <value optimized out>
w = <value optimized out>
mod = <value optimized out>
arena = <value optimized out>
ps1 = 0xb7dcde14 ">>> "
ps2 = 0xb7dde8d4 "... "
errcode = <value optimized out>
#5 0x080eddb8 in PyRun_InteractiveLoopFlags (fp=0xb7f88420,
filename=0x8128462 "<stdin>", flags=0xbfbef378)
at ../Python/pythonrun.c:723
v = (PyObject *) 0xb7dde8c0
---Type <return> to continue, or q <return> to quit---
ret = <value optimized out>
local_flags = {cf_flags = -1210226432}
#6 0x080ee516 in PyRun_AnyFileExFlags (fp=0xb7f88420,
filename=0x8128462 "<stdin>", closeit=0, flags=0xbfbef378)
at ../Python/pythonrun.c:692
err = <value optimized out>
#7 0x080595e7 in Py_Main (argc=0, argv=0xbfbef444) at ../Modules/main.c:532
c = <value optimized out>
sts = <value optimized out>
command = 0x0
filename = 0x1 <Address 0x1 out of bounds>
module = 0x0
fp = (FILE *) 0xb7f88420
p = <value optimized out>
inspect = 0
unbuffered = 0
skipfirstline = 0
stdin_is_interactive = <value optimized out>
help = 0
version = 0
saw_inspect_flag = 0
saw_unbuffered_flag = 0
cf = {cf_flags = 0}
#8 0x08058962 in main (argc=1, argv=0x1) at ../Modules/python.c:23
No locals.
Original comment by cfkars...@gmail.com on 31 Oct 2008 at 1:33
Original issue reported on code.google.com by
cfkars...@gmail.comon 31 Oct 2008 at 1:32