After upgrading gcc gnubiff can no longer read its config file from ~/.gnubiffrc. This is a known issue upstream and is fixed in version 2.2.17. Reproducible: Always Steps to Reproduce: 1.Upgrade system to gcc 5.4 2.reinstall gnubiff 3.try to use already configured gnubiff Actual Results: ** (gnubiff:20255): WARNING **: Configuration file (\xb0<g\u0008e/kmk/.gnubiffrc) not found! The string of nonsense where /home should be is different on every run. Expected Results: It should load the config file and do as configured. I manually bumped it myself. The first patch in the ebuild didn't apply cleanly so I just commented all 3 of them. That fixed my problem enough to get me going but I thought I should say something. Calling it critical because gnubiff is entirely unusable and if launched with -n (which is normal) it just looks like you have no new email.
I should also mention that I had to re-enter my IMAP password in the preferences. I don't know if that was due to the new version, the missing patches, or something I changed while trying to figure out what was wrong. But at least it could remember that I use IMAP and it had all the other details.
net-mail/gnubiff-2.2.17 is in the tree. Thanks for the report.