[Tilecache] Tilecache 2.0.1 Segfault

[Steve Lime]

Hi all: I'm using tilecache with a MapServer layer and running into problems when seeding the cache. In this instance
all the layers in the mapfile are STATUS DEFAULT, on all the time. Running the seeding program seems to work ok
with 2 exceptions:

  1) for every tile I get a WMS exception

  <CTYPE ServiceExceptionReport SYSTEM "http://schemas.opengis.net/wms/1.1.1/exception_1_1_1.dtd">
    <ServiceExceptionReport version="1.1.1">
      <ServiceException code="LayerNotDefined">
        msWMSLoadGetMapParams(): WMS server error. Invalid layer(s) given in the LAYERS parameter.
      </ServiceException>
  </ServiceExceptionReport>

This is expected I guess since there is no layer specified in the tilcache.cfg file (since all are on by default). The
tiles ARE created despite the error message. Would be nice to suppress that if it's benign.

  2) after every 500 to 1,000 tiles or I get a segmentation fault. No other error information

If I re-run the seed command it picks up again from where it dies, although I sometimes have to run it twice to clear
our any file locks. It'll run another 500 to 1,000 or so and it dies again.

Could be a MapServer issue or TileCache, not sure. The debugger gives me:

  Program received signal SIGSEGV, Segmentation fault.
  [Switching to Thread 1075357376 (LWP 31768)]
  0x400d8f4c in mempcpy () from /lib/tls/libc.so.6

Has anyone else into anything like this?

Steve

BTW The setup is:

  - MapServer 5, development version
  - Python 2.5
  - Tilecache 2.0.1 (CGI interface at the moment)
  - SuSE 9.2