Bug#939101: elogind: elogind 239 in bullseye FTBFS with gcc-9

[Mark Hindley]

Package: elogind
Version: 239.3+20190131-1+debian1
Severity: serious
Control: fixed -1 241.3-1+debian1
Control: block -1 by 934132

Reproducible builds of src:elogind 239.3+20190131-1+debian1 in bullseye
have FTBFS for the last few days. This seems to be related to the
migration of gcc-9 to bullseye.

The issue appears to be the STRING_FOREACH macro and was fixed in
systemd in v241:

 https://github.com/systemd/systemd/issues/11394
 https://bugzilla.opensuse.org/show_bug.cgi?id=1121387#c0

This fix is already included in elogind 241.3-1+debian1 which is in
unstable. However, migration of elogind 241.3-1+debian1 to bullseye is
currently blocked (see #934132). When it is unblocked it should resolve
this issue.

Mark