[test/hb-shape-threads] Verify buffer

test/threads/hb-shape-threads.cc

@@ -118,6 +118,7 @@ static void shape (bool is_var,
   const char *orig_text = hb_blob_get_data (text_blob, &orig_text_length);
 
   hb_buffer_t *buf = hb_buffer_create ();
+  hb_buffer_set_flags (buf, HB_BUFFER_FLAG_VERIFY);
   for (unsigned i = 0; i < num_repetitions; i++)
   {
     unsigned text_length = orig_text_length;

test/threads/meson.build

@@ -8,6 +8,6 @@ test('hb-shape-threads', executable('hb-shape-threads', 'hb-shape-threads.cc',
   install: false,
   ),
   workdir: meson.current_source_dir() / '..' / '..',
-  timeout: 100,
+  timeout: 300,
   suite: ['threads', 'slow'],
 )