Buildfarm member gypsy_moth seems not to like alignment patch

It looks like gypsy_moth has been failing like this:

creating directory /export/home/tmp/pg-test/build-suncc/HEAD/pgsql.21325/src/test/regress/./tmp_check/data ... ok
creating subdirectories ... ok
selecting default max_connections ... 100
selecting default shared_buffers/max_fsm_pages ... 32MB/204800
creating configuration files ... ok
creating template1 database in /export/home/tmp/pg-test/build-suncc/HEAD/pgsql.21325/src/test/regress/./tmp_check/data/base/1 ... ok
initializing pg_authid ... ok
initializing dependencies ... ok
creating system views ... Bus Error - core dumped
child process exited with exit code 138
initdb: data directory "/export/home/tmp/pg-test/build-suncc/HEAD/pgsql.21325/src/test/regress/./tmp_check/data" not removed at user's request

since I put in this patch:
http://archives.postgresql.org/pgsql-committers/2008-02/msg00270.php

This is unfortunate and surprising, since that patch was intended to
prevent compilers from making unsafe alignment assumptions, but it sure
looks like this compiler has instead added a new one. Could you poke
into it --- at least get a stack trace from the core dump?

regards, tom lane