[Mapserver-users] PHP segfault with getlayerbyname

Christophe cp10 at chalonsursaone.com
Mon Aug 18 07:50:03 PDT 2003


I have installed Mapserver on my Linux box, and I'm trying some
PHP/mapscript programs.

I can't use mapfiles with more than 1 layer. When I try to access a second
one, I've a segfault in the PHP cgi (see below).

I can only use the first declared layer in the mapfile. For exemple, with
the gmap75 code from
http://www2.dmsolutions.ca/webtools/php_mapscript/php_mapscript_dl.html
I've a segfault at GMapGetStatus("road"), a function wrapped around
getlayerbyname. The layer "road" is not the first layer in the mapfile.
When I replace road with the first layer name (bathymetry), the
programm continues until the next getlayerbyname call.
I'have the same problem with simplest programs, and also when I replace
the function getlayerbyname by getlayer(index).

When there's only 1 layer in the mapfile, the map display fine.

I have though at a problem with regex, my php cgi is compiled with:
Regex Library 	System library enabled
but also with PCRE ...

Don't know what to do, I'm thinking about suicide !

Sorry for my bad english.

Christophe

A small debug (don't know anything about C and library debugging...),
I'have
always the same error type, only the value of the parameter str changing.



Program received signal SIGSEGV, Segmentation fault.
0x0811a1b1 in add_property_string_ex (arg=0x0, key=0x406d282b "labelitem",
key_len=10,
    str=0xbff00000 "", duplicate=1) at
/usr/src/mapserver/php-4.3.2/Zend/zend_API.c:978
978             ZVAL_STRING(tmp, str, duplicate);

#0  0x0811a1b1 in add_property_string_ex (arg=0x0, key=0x406d282b
"labelitem", key_len=10,
    str=0xbff00000 "", duplicate=1) at
/usr/src/mapserver/php-4.3.2/Zend/zend_API.c:978
#1  0x4067ad46 in _phpms_build_layer_object () from
/usr/local/lib/php/extensions/php_mapscript.so
#2  0x406785a9 in php3_ms_map_getLayerByName () from
/usr/local/lib/php/extensions/php_mapscript.so










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