vf boxblur: crash

[ami_stuff]

(gdb) r -i 1.rm -vf boxblur=1:1 -f null -
The program being debugged has been started already.
Start it from the beginning? (y or n) y

Starting program: d:\mingw\msys\1.0\ffmpeg-head-30aa004\ffmpeg_g.exe -i 1.rm -vf
 boxblur=1:1 -f null -
[New Thread 1588.0x244]
ffmpeg version 0.10.2.git-30aa004 Copyright (c) 2000-2012 the FFmpeg developers
  built on May  1 2012 15:36:20 with gcc 4.6.1
  configuration: --disable-ffprobe --enable-gpl
  libavutil      51. 49.100 / 51. 49.100
  libavcodec     54. 17.101 / 54. 17.101
  libavformat    54.  3.100 / 54.  3.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 72.102 /  2. 72.102
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 11.100 /  0. 11.100
  libpostproc    52.  0.100 / 52.  0.100
[rm @ 03b02340] Unsupported stream type 434f4e54
Input #0, rm, from '1.rm':
  Metadata:
    title           :
    author          :
    copyright       :
    comment         :
  Duration: 00:00:14.00, start: 0.000000, bitrate: 164 kb/s
    Stream #0:0: Video: rv20 (RV20 / 0x30325652), yuv420p, 352x288, 150 kb/s, 15
 fps, 15 tbr, 1k tbn, 1k tbc
    Stream #0:1: Data: none
[buffer @ 03b13120] w:352 h:288 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:fl
ags=2
[buffersink @ 03b13440] No opaque field provided
[boxblur @ 03b13760] luma_radius:1 luma_power:1 chroma_radius:1 chroma_power:1 a
lpha_radius:1 alpha_power:1 w:352 chroma_w:176 h:288 chroma_h:144
Output #0, null, to 'pipe:':
  Metadata:
    title           :
    author          :
    copyright       :
    comment         :
    encoder         : Lavf54.3.100
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 352x288, q=2-31,
200 kb/s, 90k tbn, 15 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rv20 -> rawvideo)
Press [q] to stop, [?] for help

Program received signal SIGSEGV, Segmentation fault.
blur (radius=1, len=352, src_step=1, src=0x20 <Address 0x20 out of bounds>,
    dst_step=1,
    dst=0x3b14e80 "äääääää\203é\201\200\177\177\200\201\201\200\200\200\200\200\
200\200\201\201ééééééé\201\201\201\201\201\201\201éé\203\203\203\203\203\203\203
\203\203\203\203\203\203\203\203ééééééé\201\201\200\200\200\200\200\200\177~", '
}' <repeats 22 times>, "||{{{{{{{", '|' <repeats 24 times>, "}}}}}}}~\177", '\20
0' <repeats 22 times>, "\177\177", '~' <repeats 15 times>, "\023\023\022\020\017
\017\021\025\027\031\026\025\026\030\034$*.+)*.5;"...)
    at libavfilter/vf_boxblur.c:230
230             sum += src[x*src_step]<<1;
(gdb) bt
#0  blur (radius=1, len=352, src_step=1,
    src=0x20 <Address 0x20 out of bounds>, dst_step=1,
    dst=0x3b14e80 "äääääää\203é\201\200\177\177\200\201\201\200\200\200\200\200\
200\200\201\201ééééééé\201\201\201\201\201\201\201éé\203\203\203\203\203\203\203
\203\203\203\203\203\203\203\203ééééééé\201\201\200\200\200\200\200\200\177~", '
}' <repeats 22 times>, "||{{{{{{{", '|' <repeats 24 times>, "}}}}}}}~\177", '\20
0' <repeats 22 times>, "\177\177", '~' <repeats 15 times>, "\023\023\022\020\017
\017\021\025\027\031\026\025\026\030\034$*.+)*.5;"...)
    at libavfilter/vf_boxblur.c:230
#1  blur_power (temp=0x40ba460, power=1, radius=1, len=352, src_step=1,
    src=0x20 <Address 0x20 out of bounds>, dst_step=1, dst=0x0)
    at libavfilter/vf_boxblur.c:255
#2  hblur (temp=0x40ba460, power=1, radius=1, h=288, w=352, src_linesize=0,
    src=<optimized out>, dst_linesize=0, dst=0x0)
    at libavfilter/vf_boxblur.c:284
#3  end_frame (inlink=0x3b13960) at libavfilter/vf_boxblur.c:316
#4  0x00419664 in avfilter_end_frame (link=0x3b13960)
    at libavfilter/avfilter.c:632
#5  0x0041c58f in request_frame (link=0x3b13960)
    at libavfilter/src_buffer.c:363
#6  0x00418d09 in avfilter_request_frame (link=0x3b13a60)
    at libavfilter/avfilter.c:549
#7  0x0041b46b in avfilter_graph_request_oldest (graph=0x3b12320)
    at libavfilter/avfiltergraph.c:545
#8  0x00409dd6 in poll_filters () at ffmpeg.c:2124
#9  0x0040dd9a in transcode () at ffmpeg.c:3653
#10 0x00af7452 in main (argc=8, argv=0x3b10dd0) at ffmpeg.c:5899