master plpython check fails on Solaris 10

Hello, hackers! I got a permanent failure of master (commit
ebdb42a0d6a61b93a5bb9f4204408edf5959332c) plpython check on Solaris 10.
Regression output and diffs are attached.

I used the following commands:
./configure CC="ccache gcc" CFLAGS="-m64 -I/opt/csw/include"
PKG_CONFIG_PATH="/opt/csw/lib/pkgconfig:/usr/local/lib/pkgconfig"
LDFLAGS="-L/opt/csw/lib/sparcv9 -L/usr/local/lib/64" --enable-cassert
--enable-debug --enable-nls --enable-tap-tests --with-perl --with-tcl
--with-python --with-gssapi --with-openssl --with-ldap --with-libxml
--with-libxslt --with-icu
gmake > make_results.txt
gmake -C src/pl/plpython check

Binary search has shown that this failure begins with commit
8561e4840c81f7e345be2df170839846814fa004 (Transaction control in PL
procedures.). On the previous commit
(b9ff79b8f17697f3df492017d454caa9920a7183) there's no
plpython_transaction test and plpython check passes.

About the system: SunOS, Release 5.10, KernelID Generic_141444-09.

P.S. It seems that there's a similar failure on Windows, and I'm trying
to reproduce it..

--
Marina Polyakova
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company