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<DIV><FONT face=Arial color=#000000 size=2>I got the same error due to mistakes
in the Mapfile. You should try to check it too. Especially check if the layer
definition for the shapefile is correct.</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>Christian</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=margottid@COMUNE.LUGO.RA.IT
href="mailto:margottid@COMUNE.LUGO.RA.IT">Daniele Margotti</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=MAPSERVER-USERS@LISTS.UMN.EDU
href="mailto:MAPSERVER-USERS@LISTS.UMN.EDU">MAPSERVER-USERS@LISTS.UMN.EDU</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, December 06, 2004 1:35
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [UMN_MAPSERVER-USERS] Internal
Server Error</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>Hi
list,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>I use CGI
MapServer 4.2.3 on a RH9 with Apache 2.0.50:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004><!-- MapServer
version 4.2.3 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP OUTPUT=PDF
SUPPORTS=FREETYPE INPUT=EPPL7 INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
--><BR></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>All works, but I
have a map that returns an "Internal Server Error" when I try to zoom and show
a certain extent with a specific layer.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>I think the
problem is due to the shapefile (or a part of it), but... how can I be sure of
it?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>The browser only
show the "Internal Server Error" page.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>The Apache error
log says: "[Mon Dec 06 07:13:04 2004] [error] [client 172.16.20.4] Premature
end of script headers: mapserv"</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>I compiled
MapServer with --enable-debug, set "DEBUG TRUE" in the map section of the
mapfile, and tried to use shp2img with these results:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>------</SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>[root@redhat cs]#
/dati/geobase/bin/shp2img -m cs.map -o /dati/daniele.png -e 2491361 4510665
2492415 4511455<BR>[Mon Dec 6 07:24:37 2004].748031 msDrawMap(): Layer 0
(Confini_comunali), 0.040s<BR>[Mon Dec 6 07:24:41 2004].893212
msDrawMap(): Layer 1 (Base_cartografica), 4.145s<BR>[Mon Dec 6 07:24:41
2004].908452 msDrawMap(): Layer 2 (Edifici), 0.015s<BR>[Mon Dec 6
07:24:41 2004].918383 msDrawMap(): Layer 3 (Aree_traffico),
0.010s<BR>Segmentation fault</SPAN></FONT></DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>------</SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></FONT></DIV>
<DIV></SPAN></FONT><FONT face=Arial size=2><SPAN
class=988341312-06122004>[root@redhat cs]# /dati/geobase/bin/shp2img -m cs.map
-o /dati/daniele.png -e 2491361 4510665 2492415 4511455 -l
Elementi_stradali<BR>Segmentation fault<BR></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>----------<SPAN
class=988341312-06122004>------</SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004><SPAN
class=988341312-06122004><SPAN class=988341312-06122004><SPAN
class=988341312-06122004><SPAN class=988341312-06122004><SPAN
class=988341312-06122004><SPAN class=988341312-06122004><SPAN
class=988341312-06122004></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></FONT> </DIV>
<DIV></SPAN></FONT><FONT face=Arial size=2><SPAN class=988341312-06122004>When
shp2img processes the "bad" layer ('Elementi_stradali'), it exits with a
'Segmentation fault' and without a more explicit error
message.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>I launched
the following command (<FONT face=Arial size=2><SPAN
class=988341312-06122004>where "road_elements.shp" is the probably bad
shapefile):</SPAN></FONT></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>[root@redhat
cat_strade]# ogrinfo -al road_elements.shp -spat 2491361 4510665 2492415
451145</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>It returns a 85 Kb
output with apparently no detected errors.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>How can I
understand where the error lies?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>Is there a more
powerful debug tool?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>Thank
you,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=988341312-06122004>
Daniele</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=988341312-06122004> </DIV></BLOCKQUOTE></SPAN></FONT></BODY></HTML>