From 19c46d16f13e2ac1218d3f61a2d2e8382b462280 Mon Sep 17 00:00:00 2001
From: Daniel Micay <danielmicay@gmail.com>
Date: Tue, 28 Aug 2018 21:31:20 -0400
Subject: [PATCH] check pthread_atfork return value

---
 malloc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/malloc.c b/malloc.c
index 1f86a47..c6f7d85 100644
--- a/malloc.c
+++ b/malloc.c
@@ -602,7 +602,9 @@ COLD static void init_slow_path(void) {
         return;
     }
 
-    pthread_atfork(pre_fork, post_fork_parent, post_fork_child);
+    if (pthread_atfork(pre_fork, post_fork_parent, post_fork_child)) {
+        fatal_error("pthread_atfork failed");
+    }
 
     struct random_state rng;
     random_state_init(&rng);