From 3d7db1488c4bd7764e8b1fe3cfde4c5a548cde16 Mon Sep 17 00:00:00 2001
From: Ben Gamari <ben@well-typed.com>
Date: Wed, 14 Oct 2020 13:23:32 -0400
Subject: testsuite: Add missing #include on <stdlib.h>

This otherwise fails on newer Clangs, which warn
more aggressively on undeclared symbols.
---
 testsuite/tests/concurrent/should_run/conc059_c.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/testsuite/tests/concurrent/should_run/conc059_c.c b/testsuite/tests/concurrent/should_run/conc059_c.c
index 19493aee3f..f03615063f 100644
--- a/testsuite/tests/concurrent/should_run/conc059_c.c
+++ b/testsuite/tests/concurrent/should_run/conc059_c.c
@@ -1,6 +1,7 @@
 #include "HsFFI.h"
 #include "conc059_stub.h"
 #include <unistd.h>
+#include <stdlib.h>
 #include <stdio.h>
 #if mingw32_HOST_OS
 #include <windows.h>
-- 
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