1.5.3-rc5 regression on OS X?

Hi,

When I try to build and test 1.5.3-rc5 on my OS X box, I get a failure on "make test"

*   ok 82: 15 (fail) - must match A in O && A && B && O==A && O==B case
* FAIL 83: 16 - A matches in one and B matches in another.
        rm -f .git/index F16 &&
            echo F16 >F16 &&
            git update-index --add F16 &&
            tree0=`git write-tree` &&
            echo E16 >F16 &&
            git update-index F16 &&
            tree1=`git write-tree` &&
            git read-tree -m $tree0 $tree1 $tree1 $tree0 &&
            git ls-files --stage
* failed 1 among 83 test(s)
make[1]: *** [t1000-read-tree-m-3way.sh] Error 1
make: *** [test] Error 2


I was able to build and test git 1.5.2.4 fine, with no errors in the test suite. 

I also just build 1.5.3-rc5 on a redhat box, with no errors in the testsuite. 

My OS X box is a quad G5 running OS X 10.4.10, with gcc version: 

perrin-meyers-power-mac-g5:~/GIT/git perrin$ gcc -v
Using built-in specs.
Target: powerpc-apple-darwin8
Configured with: /private/var/tmp/gcc/gcc-5026.obj~19/src/configure --disable-checking --prefix=/usr --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-transform-name=/^[cg][^+.-]*$/s/$/-4.0/ --with-gxx-include-dir=/include/gcc/darwin/4.0/c++ --build=powerpc-apple-darwin8 --host=powerpc-apple-darwin8 --target=powerpc-apple-darwin8
Thread model: posix
gcc version 4.0.0 (Apple Computer, Inc. build 5026)

I define "NO_EXPAT" when I build on OS X. 

Am I doing something wrong?

Thanks,

Perrin