nails cxx error

[jason at njkfrudils.plus.com]

gmp-4.2.4

config.guess
athlon64-unknown-linux-gnu

Target: x86_64-pc-linux
Configured 
with: ../gcc-4.2.3/configure --prefix=/usr --enable-shared --enable-languages=ada,c,c++,fortran,java,objc --enable-threads=posix --enable-__cxa_atexit --disable-checking --disable-multilib --with-gnu-ld --verbose --build=x86_64-pc-linux --target=x86_64-pc-linux --host=x86_64-pc-linux
Thread model: posix
gcc version 4.2.3

./configure --enable-assert --enable-cxx && make && make check 
 this passes OK

./configure --enable-assert --enable-cxx --enable-nails=2 
make && make check  

fails with 
PASS: t-assign
PASS: t-binary
PASS: t-cast
PASS: t-constr
PASS: t-headers
PASS: t-istream
PASS: t-locale
PASS: t-misc
PASS: t-ops
PASS: t-ostream
t-prec.cc:56: GNU MP assertion failed: __gmpf_eq(_a, _c, very_large_prec)
/bin/sh: line 4: 22327 Aborted                 ${dir}$tst
FAIL: t-prec
PASS: t-rand
PASS: t-ternary
PASS: t-unary
==================================
1 of 14 tests failed
Please report to gmp-bugs at swox.com
==================================
make[4]: *** [check-TESTS] Error 1

I dont actually use nails , or C++ , so I'm afraid all I can do is report the 
error