Bug#320380: amd64 dpkg-architecture gives no information

[Jeremy Brand <jbrand@ieee.org>]

Package: dpkg-dev
Version: 1.10.28

When I invoke `dpkg-architecture` on Sarge/amd64, the output is
seemingly broken:
                                                                                 $ uname -a
Linux gamera.domain.mars 2.6.8-11-amd64-k8-smp #1 SMP Wed Jun 1 00:01:27 CEST 2$
$ dpkg-architecture
DEB_BUILD_ARCH=
DEB_BUILD_GNU_CPU=
DEB_BUILD_GNU_SYSTEM=
DEB_BUILD_GNU_TYPE=
DEB_HOST_ARCH=
DEB_HOST_GNU_CPU=                                                               DEB_HOST_GNU_SYSTEM=
DEB_HOST_GNU_TYPE=

alternatively, dpkg-architechture works fine on Sarge/i386

$ uname -a
Linux edgar 2.4.27-2-686-smp #1 SMP Mon May 16 16:55:31 JST 2005 i686 GNU/Linux
$ dpkg-architecture
DEB_BUILD_ARCH=i386
DEB_BUILD_GNU_CPU=i386
DEB_BUILD_GNU_SYSTEM=linux
DEB_BUILD_GNU_TYPE=i386-linux
DEB_HOST_ARCH=i386                                                              DEB_HOST_GNU_CPU=i386
DEB_HOST_GNU_SYSTEM=linux
DEB_HOST_GNU_TYPE=i386-linux

I know I can set the arch with -a and gnu type with -t.  I'm only               reporting that the package does not work as expected.                                                                                                           This also breaks the java-package on amd64, because java-package uses
dpkg-architecture to determine this information.

Sincerely,
Jeremy

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