Bad Grid causes problems . error message not helpful.

[h4ck3rm1k3]

Bad Grid in mapserver

LAYER
 NAME "grid"
 TYPE LINE
 STATUS DEFAULT
 GRID
  LABELFORMAT "DDMM"
   MAXARCS 10
  MAXINTERVAL 10
  MAXSUBDIVIDE 2
END
END # Layer

produces :

==> /var/log/apache2/error.log <==
[Sat Feb 27 20:02:56 2010] [error] [client ::1] Premature end of script

[h4ck3rm1k3]

Full Map file:

MAP

#CONFIG "MS_ERRORFILE" "/var/tmp/ms.log"
DEBUG 5
EXTENT 19.141481 41.002088 19.997634 41.999861
SIZE 600 600
UNITS METERS
STATUS ON
NAME "TEST"
IMAGECOLOR 155 155 155
IMAGETYPE PNG


LAYER
 NAME "grid"
 TYPE LINE
 STATUS DEFAULT
 GRID
  LABELFORMAT "DDMM"
   MAXARCS 10
  MAXINTERVAL 10
  MAXSUBDIVIDE 2
END
END # Layer

END

URL:

http://localhost:8080/cgi-bin/mapserv?map=%2Fvar%2Fwww%2Fmapserver%2Ftest2.map&mode=map

[warmerdam]

I have reproduced a crash in msGraticuleLayerOpen() where there seems to be an assumption there will be at least one CLASS available. I will dig a bit deeper and ensure that the code at least issues a clean runtime error rather than crashing, and possibly even does not depend on the class if that seems appropriate.

[warmerdam]

I have fixed the GraticuleLayerOpen function to not crash if there are no classes, and also to issue a debug message if there are no classes since it not produce anything useful.

The change is in trunk (r9905) and 5.6 branch (r9906).