--- test/src/sml_buffer_test.c.orig	2018-01-25 17:04:21 UTC
+++ test/src/sml_buffer_test.c
@@ -22,7 +22,7 @@
 TEST_GROUP(sml_buffer);
 
 int buffer_len = 512;
-sml_buffer *buf;
+extern sml_buffer *buf;
 
 TEST_SETUP(sml_buffer) {
 	buf = sml_buffer_init(buffer_len);