From 3f4ed681c2e16ab7a73e31835a6a7e29d5857dd7 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Fri, 14 Nov 2008 16:50:01 +0000
Subject: [PATCH] * Prevent zombies.  Previous the SIGCHLD handler only reaped
 one   zombie at a time, so if multiple children died before the handler   got
 to run, some of them would not be cleaned up.

---
 src/nix-worker/nix-worker.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/nix-worker/nix-worker.cc b/src/nix-worker/nix-worker.cc
index 7511b1c2c1..dc9db0be42 100644
--- a/src/nix-worker/nix-worker.cc
+++ b/src/nix-worker/nix-worker.cc
@@ -534,7 +534,7 @@ static void processConnection()
 static void sigChldHandler(int sigNo)
 {
     /* Reap all dead children. */
-    while (waitpid(-1, 0, WNOHANG) == 0) ;
+    while (waitpid(-1, 0, WNOHANG) > 0) ;
 }