X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=write_common.c;h=39f124f832dddb169ace064443629bead6be0f7e;hb=eedc9eafd60b670dd2b90fcbcc380f3f9a333f93;hp=cfdabe4821bc6af60a12b99f3c9c5ff0b03d60d5;hpb=2a8029478dfc65f0c935d864faf4aea9e3deb27d;p=paraslash.git

diff --git a/write_common.c b/write_common.c
index cfdabe48..39f124f8 100644
--- a/write_common.c
+++ b/write_common.c
@@ -58,15 +58,15 @@ int wng_open(struct writer_node_group *g)
 {
 	int i, ret = 1;
 
-	PARA_NOTICE_LOG("opening wng with %d writer(s)\n", g->num_writers);
+	PARA_NOTICE_LOG("opening wng %p with %d writer(s)\n", g, g->num_writers);
 	FOR_EACH_WRITER_NODE(i, g) {
 		struct writer_node *wn = &g->writer_nodes[i];
+		wn->wng = g;
 		ret = wn->writer->open(wn);
 		if (ret < 0)
 			goto out;
 		wn->chunk_bytes = ret;
 		g->max_chunk_bytes = PARA_MAX(g->max_chunk_bytes, ret);
-		wn->wng = g;
 		PARA_DEBUG_LOG("pre_select: %p\n", &wn->writer->pre_select);
 		PARA_DEBUG_LOG("post_select: %p\n", &wn->writer->post_select);
 		wn->task.pre_select = wn->writer->pre_select;
@@ -94,6 +94,8 @@ void wng_close(struct writer_node_group *g)
 {
 	int i;
 
+	if (!g)
+		return;
 	PARA_NOTICE_LOG("closing wng with %d writer(s)\n", g->num_writers);
 	FOR_EACH_WRITER_NODE(i, g) {
 		struct writer_node *wn = &g->writer_nodes[i];