Reading the report by @collinfunk , I also tried a build with `-fsanitize=address` (adding `CFLAGS='-O3 -g -fsanitize=address'` to `configure` options (for libgpg-error, libgcrypt, and gnupg).
I have the failure result of gnupg for `tests/openpgp/trust-pgp-4.scm`.
I located the issue, it is because of regexp routines in libasan library.
```
$ ./bin/gpg --import ../../wg/gnupg/tests/openpgp/trust-pgp/scenario4.asc
$ ./bin/gpg --debug=trust --check-trustdb --yes
[...]
gpg: DBG: regexp '<[^>]+[@.]example\\.com>$' ('<[^>]+[@.]example\\.com>$') on 'Heidi <heidi@example.net>': NO
```