source/child: Implement
diff --git a/.gitignore b/.gitignore
index 3c5419c..e7fd756 100644
--- a/.gitignore
+++ b/.gitignore
@@ -49,6 +49,7 @@
 /test/internal_sdref
 /test/internal_utils
 /test/source_base
+/test/source_child
 /test/source_event
 /test/source_io
 /test/source_signal