[mapserver-users] crash mapserver with some specific jpeg output and truetype symbol over raster

[Oliver Christen]

I have opened the bug, I hope I did it right ^_^

http://trac.osgeo.org/mapserver/ticket/4084

On Wed, Nov 16, 2011 at 10:15 AM, Oliver Christen
<oliver.christen at camptocamp.com> wrote:
> thank you Steve
> I will do it
>
> best regards
> Oliver
>
> On Tue, Nov 15, 2011 at 11:48 PM, Lime, Steve D (DNR)
> <Steve.Lime at state.mn.us> wrote:
>> This is enough to open a bug, can you do that? -Steve
>>
>> -----Original Message-----
>> From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Oliver Christen
>> Sent: Tuesday, November 15, 2011 7:15 AM
>> To: mapserver-users at lists.osgeo.org
>> Subject: [mapserver-users] crash mapserver with some specific jpeg output and truetype symbol over raster
>>
>> hi all
>>
>> Im experimenting some weird behavior with some jpeg output on a
>> Mapserver 6.0.0
>>
>> I have two layers: a raster layer and a watermark using a truetype
>> symbol over it.
>> When requesting the jpeg output, at the very specific FORMATOPTION
>> QUALITY=88, Mapserver crash with a "Floating point exception".
>>
>> The image is still generated (???), but the error make it impossible to
>> server the image with fastcgi, as the Mapserver error trigger an error
>> 500 in apache.
>>
>> I DONT have any problem if:
>> 1) I request a png image
>> 2) I change the FORMATOPTION QUALITY=88 to 87 or 89
>>
>> I have prepared a minimal testcase which allow to reproduce the problem:
>>
>> http://publicshare.camptocamp.com/mapserver/testcase.zip
>>
>> which can be triggered with:
>>
>> shp2img -m testcase.map -l "ch.swisstopo.pixelkarte-farbe-pk200.noscale
>> ch.swisstopo.watermark" -i jpeg -s 256 256 -e 624800.0 132400.0 625440.0
>> 133040.0 > test.jpg
>>
>> or:
>>
>> /usr/lib/cgi-bin/mapserv -nh
>> "QUERY_STRING=map=testcase.map&mode=map&layers=ch.swisstopo.pixelkarte-farbe-pk200.noscale+ch.swisstopo.watermark&mapext=624800.0+132400.0+625440.0+133040.0&mapsize=256+256"
>>  > test2.jpeg
>>
>> I just had a look using gdb (but I dont have enough knowledge to get any
>> info from this sadely):
>>
>> gdb /usr/lib/cgi-bin/mapserv
>> GNU gdb (GDB) 7.0.1-debian
>> Copyright (C) 2009 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 "x86_64-linux-gnu".
>> For bug reporting instructions, please see:
>> <http://www.gnu.org/software/gdb/bugs/>...
>> Reading symbols from /usr/lib/cgi-bin/mapserv...(no debugging symbols
>> found)...done.
>> (gdb) run -nh
>> "QUERY_STRING=map=testcase.map&mode=map&layers=ch.swisstopo.pixelkarte-farbe-pk200.noscale+ch.swisstopo.watermark&mapext=624800.0+132400.0+625440.0+133040.0&mapsize=256+256"
>>  > test2.jpeg
>> Starting program: /usr/lib/cgi-bin/mapserv -nh
>> "QUERY_STRING=map=testcase.map&mode=map&layers=ch.swisstopo.pixelkarte-farbe-pk200.noscale+ch.swisstopo.watermark&mapext=624800.0+132400.0+625440.0+133040.0&mapsize=256+256"
>>  > test20.jpeg
>> [Thread debugging using libthread_db enabled]
>>
>> Program received signal SIGFPE, Arithmetic exception.
>> 0x00000000004e20dd in ?? ()
>> (gdb) backtrace
>> #0 0x00000000004e20dd in ?? ()
>> #1 0x000000000051401e in jpeg_stream_term_destination ()
>> #2 0x00007ffff74dac6f in jpeg_finish_compress () from /usr/lib/libjpeg.so.62
>> #3 0x00000000005144af in ?? ()
>> #4 0x00000000005168ea in ?? ()
>> #5 0x0000000000454fbf in ?? ()
>> #6 0x000000000041e1bb in main ()
>>
>> I had a look at Mapserver 6.0.1 changelog but I couldnt find a bug which
>> may be similar.
>> Is this a known issue?
>> Could someone tell me if it is "enough" to open a bug?
>>
>> Thanks in advance
>> best regards
>> Oliver
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>>
>>
>>
>