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authorGravatar David Bremner <david@tethera.net>2014-01-23 08:24:00 -0400
committerGravatar David Bremner <david@tethera.net>2014-01-24 20:20:54 -0400
commit29f125212619ebca8621dd2106b412b22e1b6d22 (patch)
tree550c0182e597d81890aaf8ad7d128e58d7be83b7
parent5c526d1737212dd736b1c3fedc6bf5b3493ce436 (diff)
lib: make notmuch_threads_valid return FALSE when passed NULL
Without this patch, the example code in the header docs crashes for certain invalid queries (see id:871u00oimv.fsf@approx.mit.edu)
-rw-r--r--lib/notmuch.h2
-rw-r--r--lib/query.cc3
2 files changed, 5 insertions, 0 deletions
diff --git a/lib/notmuch.h b/lib/notmuch.h
index 02604c56..68896ae7 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -802,6 +802,8 @@ notmuch_query_destroy (notmuch_query_t *query);
* valid object. Whereas when this function returns FALSE,
* notmuch_threads_get will return NULL.
*
+ * If passed a NULL pointer, this function returns FALSE
+ *
* See the documentation of notmuch_query_search_threads for example
* code showing how to iterate over a notmuch_threads_t object.
*/
diff --git a/lib/query.cc b/lib/query.cc
index ec60e2e4..60ff8bd9 100644
--- a/lib/query.cc
+++ b/lib/query.cc
@@ -462,6 +462,9 @@ notmuch_threads_valid (notmuch_threads_t *threads)
{
unsigned int doc_id;
+ if (! threads)
+ return FALSE;
+
while (threads->doc_id_pos < threads->doc_ids->len) {
doc_id = g_array_index (threads->doc_ids, unsigned int,
threads->doc_id_pos);