The more information you can give us about the problem and the environment in which it occurs, the faster we can resolve the problem. Below is a list of information that is very helpful to us. Not every item is appropriate for a particular report, but please include whatever you can.
Rerun your client. Include the output of the server in your problem report.
If you cannot glean any useful information from this, use the -E -dD -P options on gcc, and pipe the results to a file junk.C. Compile junk.C with gcc. Often this will pinpoint the problem.
If you still cannot glean any useful information, send us junk.C IN A SEPARATE MAIL MESSAGE, with the subject ``junk.C''; also send us junk.C.lines in a separate mail message with the subject ``junk.C.lines''.