[PATCH v2 03/12] lib: Handle empty date value

[Austin Clements]

From: Austin Clements <amdragon at mit.edu>

In the interest of robustness, avoid undefined behavior of
sortable_unserialise if the date value is missing.  This shouldn't
happen now, but ghost messages will have blank date values.
---
 lib/message.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/message.cc b/lib/message.cc
index bbfc250..38bc929 100644
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -896,6 +896,9 @@ notmuch_message_get_date (notmuch_message_t *message)
 	return 0;
     }
 
+    if (value.empty ())
+	/* sortable_unserialise is undefined on empty string */
+	return 0;
     return Xapian::sortable_unserialise (value);
 }
 
-- 
2.1.0