postmaster segfaults with HUGE table

Hi,

this query makes postmaster (beta4) die with signal 11:

(echo "CREATE TABLE footest(";
for i in `seq 0 66000`; do
echo "col$i int NOT NULL,";
done;
echo "PRIMARY KEY(col0));") | psql test

ERROR: tables can have at most 1600 columns
LOG: server process (PID 2140) was terminated by signal 11
LOG: terminating any other active server processes
LOG: all server processes terminated; reinitializing

Program received signal SIGSEGV, Segmentation fault.
0x4015d43c in mallopt () from /lib/tls/libc.so.6
(gdb) bt
#0 0x4015d43c in mallopt () from /lib/tls/libc.so.6
#1 0x00021680 in ?? ()
[...]
#16 0x00000001 in ?? ()
#17 0x0821bc9b in AllocSetDelete ()
Previous frame inner to this frame (corrupt stack?)

Furthermore the backend doesn't react on query cancel requests from psql
during execution of the query.

Joachim