[Fix] Fix crash on OpenBSD in `url_email_start`

Issue: #969
MFH: true

diff --git a/src/libserver/url.c b/src/libserver/url.c
index cc6cfbb3a834652c136c9903473fb865d6520168..7231934fd2ce3325ee47a6e24326645c4bf68d27 100644 (file)
--- a/src/libserver/url.c
+++ b/src/libserver/url.c
@@ -1925,9 +1925,13 @@ url_email_start (struct url_callback_data *cb,
                        cb->last_at = NULL;
                        return FALSE;
                }
+               else if (pos == cb->begin) {
+                       /* Just @ at the start of input */
+                       return FALSE;
+               }
        }
 
-       if (pos > cb->begin - 1) {
+       if (pos >= cb->begin + 1) {
                match->st = *(pos - 1);
        }
        else {