PostgreSQL 8.3.4 Solaris x86 compilation issues

Hi everyone,
i am facing some problem while compiling postgresql 8.3.4 on Solaris 10 x86
10u5. the compiler is SunStudio 12.

The compilation happens without errors, but make check fails:

OpenSSL 0.9.8i compiled as:
./Configure --prefix=/opt/usr/local -m64 -xmodel=medium

PostgreSQL 8.3.4 compiled as:
./configure --prefix=/opt/usr/local --with-libs=/opt/usr/local/lib
--without-readline --with-openssl CFLAGS=" -m64 -xmodel=medium"

The error happens while running make check:

./pg_regress --temp-install=./tmp_check --top-builddir=../../..
--srcdir=/export/home/dotyet/pginst/postgresql-8.3.4/src/test/regress
--temp-port=55432 --schedule=./parallel_schedule --multibyte=SQL_ASCII
--load-language=plpgsql
============== removing existing temp installation ==============
============== creating temporary installation ==============
============== initializing database system ==============
============== starting postmaster ==============
Killed
Killed
Killed
Killed
Killed
Killed

if I remove the --with-openssl, everything works as expected.

any thoughts?

thanks in advance.
dotyet