Fix possible deadlock in node-select

1 files changed, 3 insertions, 3 deletions

diff --git a/vchan/node-select.c b/vchan/node-select.c
index f6b2d7f..eb5fd8b 100644
--- a/vchan/node-select.c
+++ b/vchan/node-select.c
@@ -124,14 +124,14 @@ int main(int argc, char **argv)
 			libvchan_wait(ctrl);
 			vchan_wr();
 		}
-		while (libvchan_data_ready(ctrl)) {
+		if (FD_ISSET(1, &wfds))
+			stdout_wr();
+		while (libvchan_data_ready(ctrl) && outsiz < BUFSIZE) {
 			ret = libvchan_read(ctrl, outbuf + outsiz, BUFSIZE - outsiz);
 			if (ret < 0)
 				exit(1);
 			outsiz += ret;
 			stdout_wr();
 		}
-		if (FD_ISSET(1, &wfds))
-			stdout_wr();
 	}
 }