Before the change, the last loop in guess_from_received_header() did not reset domain and tld variables to NULL. This leads to double free error in some cases and possibly other bugs. --- notmuch-reply.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/notmuch-reply.c b/notmuch-reply.c index 514bbc6..dab69e6 100644 --- a/notmuch-reply.c +++ b/notmuch-reply.c @@ -406,6 +406,7 @@ guess_from_received_header (notmuch_config_t *config, notmuch_message_t *message /* Now extract the last two components of the MTA host name * as domain and tld. */ + domain = tld = NULL; while ((ptr = strsep (&token, delim)) != NULL) { if (*ptr == '\0') continue; -- 1.7.5.4