[PATCH 06/11] lib: catch Xapian exceptions in n_m_count_files

[David Bremner <david@tethera.net>]

This will require some care for the caller to check the sign, and not
just add error returns into a running total.
---
 lib/message.cc         | 7 ++++++-
 lib/notmuch.h          | 3 ++-
 test/T560-lib-error.sh | 1 -
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/lib/message.cc b/lib/message.cc
index 9b7d4bc4..b7d7c96b 100644
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -1156,7 +1156,12 @@ notmuch_message_get_filenames (notmuch_message_t *message)
 int
 notmuch_message_count_files (notmuch_message_t *message)
 {
-    _notmuch_message_ensure_filename_list (message);
+    try {
+	_notmuch_message_ensure_filename_list (message);
+    } catch (Xapian::Error &error) {
+	LOG_XAPIAN_EXCEPTION (message, error);
+	return -1;
+    }
 
     return _notmuch_string_list_length (message->filename_list);
 }
diff --git a/lib/notmuch.h b/lib/notmuch.h
index b7de7652..0f386397 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -1412,7 +1412,8 @@ notmuch_message_get_replies (notmuch_message_t *message);
 
 /**
  * Get the total number of files associated with a message.
- * @returns Non-negative integer
+ * @returns Non-negative integer for file count.
+ * @returns Negative integer for error.
  * @since libnotmuch 5.0 (notmuch 0.25)
  */
 int
diff --git a/test/T560-lib-error.sh b/test/T560-lib-error.sh
index 8207727e..507e0e07 100755
--- a/test/T560-lib-error.sh
+++ b/test/T560-lib-error.sh
@@ -503,7 +503,6 @@ EOF
 test_expect_equal_file EXPECTED OUTPUT
 
 test_begin_subtest "Handle counting files from closed database"
-test_subtest_known_broken
 cat c_head2 - c_tail <<'EOF' | test_C ${MAIL_DIR}
     {
         int result;
-- 
2.27.0