Stephen Berman via Mailing list for Emacs changes <emacs-diffs@gnu.org>
writes:

Hi Stephen,

> branch: emacs-30
> commit 6bca138d60e47d0fbab4faf8e83c5b9b319f260d
> Author: Stephen Berman <stephen.berman@gmx.net>
> Commit: Stephen Berman <stephen.berman@gmx.net>
>
>     Fix latest test for dabbrev-expand
>
>     * test/lisp/dabbrev-tests.el (dabbrev-expand-after-killing-buffer):
>     Fix typo in a 'should' test, use part of return value of 'should-error'
>     test, and remove mistaken and unfounded FIXME comment.
> ---
>  test/lisp/dabbrev-tests.el | 20 ++++++--------------
>  1 file changed, 6 insertions(+), 14 deletions(-)

I'm not sure whether it was this commit, or a previous one. But
dabbrev-tests.el is broken in the emacs-30 branch. Running 'make -C test
dabbrev-tests.log' yields the appended log file.

Best regards, Michael.