From 4fb4d6c57a987f58915f21af5a6321c5228b45dc Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Tue, 21 Jun 2016 19:07:23 +0200
Subject: erts: Add test port_SUITE:pipe_limit_env

for 9f779819f6bda734c595.
---
 erts/emulator/sys/unix/sys_drivers.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'erts/emulator/sys')

diff --git a/erts/emulator/sys/unix/sys_drivers.c b/erts/emulator/sys/unix/sys_drivers.c
index e08ef41817..3d7be020e1 100644
--- a/erts/emulator/sys/unix/sys_drivers.c
+++ b/erts/emulator/sys/unix/sys_drivers.c
@@ -688,6 +688,10 @@ static ErlDrvData spawn_start(ErlDrvPort port_num, char* name,
             return ERL_DRV_ERROR_ERRNO;
         }
 
+        /*
+         * Whitebox test port_SUITE:pipe_limit_env
+         * assumes this command payload format.
+         */
         io_vector[i].iov_base = (void*)&buffsz;
         io_vector[i++].iov_len = sizeof(buffsz);
 
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