Building perl cpan B::Size with perl 5.10

Question

I'm trying to install B::TerseSize (used with Apache::Status for memory debugging). The build fails on the B::Size dependency when building with perl 5.10 (.0 and .1)

Does anyone know how I can build this on my machine? Is this an included headers failure, an XS error or something else?

My error is the same as in the following places:

CPAN : This is marked as a bug against the package.

http://rt.cpan.org/Public/Dist/Display.html?Name=B-Size

CPAN-Testers : This shows the same bug.

http://www.cpantesters.org/distro/B/B-Size.html

> uname -a
Linux mybox 2.6.31-14-generic #48-Ubuntu SMP \
  Fri Oct 16 14:04:26 UTC 2009 i686 GNU/Linux

> cpan B::Size
...
cp Size.pm blib/lib/B/Size.pm
cp lib/B/TerseSize.pm blib/lib/B/TerseSize.pm
/usr/local/bin/perl /usr/local/lib/perl5/5.10.1/ExtUtils/xsubpp  -typemap /usr/local/lib/perl5/5.10.1/ExtUtils/typemap -typemap typemap  Size.xs > Size.xsc && mv Size.xsc Size.c
cc -c   -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"0.09\" -DXS_VERSION=\"0.09\" -fPIC "-I/usr/local/lib/perl5/5.10.1/i686-linux/CORE"   Size.c
In file included from Size.xs:16:
b_sizeof.c: In function ‘boot_B_Sizeof’:
b_sizeof.c:27: error: ‘XRV’ undeclared (first use in this function)
b_sizeof.c:27: error: (Each undeclared identifier is reported only once
b_sizeof.c:27: error: for each function it appears in.)
b_sizeof.c:35: error: invalid application of ‘sizeof’ to incomplete type ‘XPVBM’ 
Size.xs: In function ‘REGEXP_size’:
Size.xs:51: error: ‘REGEXP’ has no member named ‘regstclass’
Size.xs:51: error: ‘REGEXP’ has no member named ‘regstclass’
Size.xs:53: error: ‘REGEXP’ has no member named ‘startp’
Size.xs:53: error: ‘REGEXP’ has no member named ‘startp’
Size.xs:54: error: ‘REGEXP’ has no member named ‘endp’
Size.xs:54: error: ‘REGEXP’ has no member named ‘endp’
Size.xs:56: error: ‘REGEXP’ has no member named ‘data’
Size.xs:57: error: ‘REGEXP’ has no member named ‘data’
Size.xs:58: error: ‘REGEXP’ has no member named ‘data’
Size.xs:62: error: ‘REGEXP’ has no member named ‘data’
Size.xs:65: error: ‘REGEXP’ has no member named ‘data’
Size.c: In function ‘XS_B__OP_op_name’:
Size.c:315: warning: assignment discards qualifiers from pointer target type
Size.c: In function ‘XS_B__OP_op_desc’:
Size.c:337: warning: assignment discards qualifiers from pointer target type
make: *** [Size.o] Error 1