From 29d14f1b6eb1cdfb4c9d22da21bdf48d3ce0da54 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 15 Aug 2022 17:13:39 +0100
Subject: [PATCH] prefork-interp: New protocol: C: Do exchange even for setup
 run

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 cprogs/prefork-interp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cprogs/prefork-interp.c b/cprogs/prefork-interp.c
index 91ab3cb..b15d61a 100644
--- a/cprogs/prefork-interp.c
+++ b/cprogs/prefork-interp.c
@@ -387,6 +387,8 @@ static FILE *connect_or_spawn(void) {
   close(sfd);
 
   call_sock = call_sock_from_fd(fake_pair[0]);
+  const char *emsg = protocol_exchange(call_sock);
+  if (emsg) die("setup failed: %s", emsg);
 
   int status;
   pid_t got = waitpid(setup_pid, &status, 0);
-- 
2.30.2