legend template crash with fast CGI

[miguel coladas]

Thanks for your answer Daniel.

I'm testing with latest 4.10 beta and I'm having some problems

[miguel at mcoladas miguel]$ /usr/local/apache/fcgi-bin/mapserv -v
MapServer version 4.10.0-beta1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG 
OUTPUT=WBMP OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=FREETYPE 
SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER 
SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER SUPPORTS=FASTCGI INPUT=EPPL7 
INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE

With this version of mapserver I have run Valgrind at the command line 
as you tell me:

[miguel at mcoladas miguel]$ valgrind /usr/local/apache/fcgi-bin/mapserv 
QUERY_STRING="map=/usr/local/apache/htdocs/mapserver/map/client-draw.map&mode=legend&layers=provincias&mapext=458350+4613016+704030+4858696&mapsize=350+350&map_legend_template=../templates/legend.html"
==5322== Memcheck, a memory error detector for x86-linux.
==5322== Copyright (C) 2002-2003, and GNU GPL'd, by Julian Seward.
==5322== Using valgrind-2.1.0, a program supervision framework for 
x86-linux.
==5322== Copyright (C) 2000-2003, and GNU GPL'd, by Julian Seward.
==5322== Estimated CPU clock rate is 1923 MHz
==5322== For more details, rerun with: -v
==5322==
==5322== Invalid free() / delete / delete[]
==5322==    at 0x4002B455: free (vg_replace_malloc.c:186)
==5322==    by 0x40BC4CBB: (within /lib/i686/libc-2.3.3.so)
==5322==    by 0x40BC4951: __libc_freeres (in /lib/i686/libc-2.3.3.so)
==5322==    by 0x4016AACC: vgPlain___libc_freeres_wrapper 
(vg_intercept.c:172)
==5322==  Address 0x410897F8 is not stack'd, malloc'd or free'd
==5322==
==5322== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
==5322== malloc/free: in use at exit: 58517 bytes in 129 blocks.
==5322== malloc/free: 14327 allocs, 14199 frees, 4390277 bytes allocated.
==5322== For a detailed leak analysis,  rerun with: --leak-check=yes
==5322== For counts of detected errors, rerun with: -v

any idea?


Daniel Morissette escribió:
> If you are on Linux then you could perhaps capture the URL of the 
> request that causes the crash, and then run it under Valgrind 
> (http://valgrind.org/) at the command line using something like:
>
> valgrind ./mapserv QUERY_STRING="map=....."
>
> You get the value of QUERY_STRING from the URL that causes the crash.
>
> If Valgrind reports errors then I suggest you create a bug report with 
> the Valgrind output and a test case to reproduce (including mapfile, 
> test dataset, etc. and the query_string that causes the crash).
>
> BTW, I would suggest that you test this against the latest 4.10 beta 
> before reporting a bug.
>
> Daniel
>
>
>
> miguel coladas wrote:
>> Hi everyone,
>>
>> first i'm spanish, so sorry for my english.
>> I'm using mapserver (4.8.3) in fast CGI mode (apache 2.0.59, 
>> mod_fastcgi/2.4.2). I'm having some problems with this configuration 
>> when i want use the legend template option.
>> In the legend template file, when I put "[leg_layer_html opt_flag=1]" 
>> the legend works correctly. However, when I put "[leg_layer_html 
>> opt_flag=2]" mapserver crashes. In CGI mode, the same legend works 
>> correctly. Other modes (map, query... works correctly too).
>>
>> The error_log of apache server:
>>
>> [Mon Aug 21 18:16:43 2006] [error] [client 192.168.1.3] Premature end 
>> of script headers: mapserv
>>
>> I think this is a bug with mapserver in fast CGI mode. Can anyone 
>> help me out with this?
>>
>> Many thanks,
>>
>>     Miguel Coladas
>
>