io: fix maybe-uninitialized warning in test (-O2)

[ccan] / ccan / io / io.h

diff --git a/ccan/io/io.h b/ccan/io/io.h
index ac5a6b077a4b578e776b2a7ac2fa2348c000b530..68dd56876333293989411ccbb7206acf6001e766 100644 (file)
--- a/ccan/io/io.h
+++ b/ccan/io/io.h
@@ -47,7 +47,8 @@ struct io_conn;
  *     int fd[2];
  *     struct io_conn *conn;
  *
- *     pipe(fd);
+ *     if (pipe(fd) != 0)
+ *             exit(1);
  *     conn = io_new_conn(NULL, fd[0], conn_init, (const char *)"hi!");
  *     if (!conn)
  *             exit(1);
@@ -649,6 +650,16 @@ void *io_loop(struct timers *timers, struct timer **expired);
  */
 int io_conn_fd(const struct io_conn *conn);
 
+/**
+ * io_time_override - override the normal call for time.
+ * @nowfn: the function to call.
+ *
+ * io usually uses time_now() internally, but this forces it
+ * to use your function (eg. for debugging).  Returns the old
+ * one.
+ */
+struct timeabs (*io_time_override(struct timeabs (*now)(void)))(void);
+
 /**
  * io_set_debug - set synchronous mode on a connection.
  * @conn: the connection.