Unclear error message when directory contains another directory with no read/write permission

[tionis]

When I have a directory which contains another directory for which I have neither write nor read permission, watchful/watch fails with the following error message:

free(): double free detected in tcache 2

Tested on Arch Linux.

[pyrmont]

Ooh, thanks for the report. That's something I hadn't thought of. Will investigate and see what's going on.