streaking of symbols on bottom edge / rendering bug

[cermak@…]

We have noticed a rendering bug.  No matter what format (we primarily use PNG or
PNG24), via Mapscript or via the WMS service, if a symbol (plain dot) is
rendered at the bottom of the screen, it will tend to streak along the boarder.
  A WMS link has been provided.  This bug should be very easy to reproduce.  (If
not, I will work up a static MAP file and DATA for the bug).

http://ak.aoos.org/op/mapserver/ows.php?VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG:4326&WIDTH=512&HEIGHT=512&LAYERS=salinity,states&STYLES=&BGCOLOR=0xFFFFFF&FORMAT=image/png&TRANSPARENT=TRUE&BBOX=-179,49.5,-95,71.5

We have seen this occur in many prior versions through the current version
4.10.1.  It is nothing more than an annoyance and placed at a lower priority.

This is using the new built-in WxS services in PHP :) Way cool addition.  With
that you can put the WMS service into DEBUG mode by adding a DEBUG=1 as an
argument (for any request).

http://ak.aoos.org/op/mapserver/ows.php?DEBUG=1&REQUEST=GetCapabilities&SERVICE=WMS&VERSION=1.1.1

[sdlime]

Rob: This is a known bug with GD. It is probably fixed in the newest release 
(2.0.34) but I haven't tried it myself. The other workaround is to use a 
circular truetype symbol.

Nothing I can do in MapServer itself so marking as invalid.

Steve