Hi,

I'm running amd64 and have symlinks:i386 installed. Now I'm trying to
build glibc which build depends on symlinks. Since symlinks is
M-A:foreign it should satisfy the build dependency of glibc built on
amd64. Nonetheless, dpkg-checkbuilddeps will throw an error.

Additionally, I cannot reproduce the same problem after having installed
symlinks:amd64 and then again symlinks:i386. After having done that,
dpkg-checkbuilddeps behaves properly even with only symlinks:i386
installed.

This might be related to #710769 but that bug affected M-A:no packages
which were wrongly classified as M-A: foreign while this bug is about a
M-A:foreign package being treated as if it was M-A:no.

cheers, josch