doc: added error check in example

diff --git a/doc/cha-internals.texi b/doc/cha-internals.texi
index 9dc6fbd22cc927677bc92d398052233d1f7f0f85..daf5f362d3fed0bb3d1e2c18b73623a492ad2ec7 100644 (file)
--- a/doc/cha-internals.texi
+++ b/doc/cha-internals.texi
@@ -418,7 +418,8 @@ _foobar_supp_send_params(gnutls_session_t session, gnutls_buffer_t buf)
    unsigned char *msg = "hello world";
    int len = strlen(msg);
 
-   gnutls_buffer_append_data(buf, msg, len);
+   if (gnutls_buffer_append_data(buf, msg, len) < 0)
+       abort();
 
    return len;
 @}