Fixed compiler warning.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@7491

diff --git a/exp-drd/tests/recursive_mutex.c b/exp-drd/tests/recursive_mutex.c
index 069c862d85f074887d831c8c27f5dbbd6928ef6a..eab2eec51d3afc96034bd965fe96c0d5950e1554 100644 (file)
--- a/exp-drd/tests/recursive_mutex.c
+++ b/exp-drd/tests/recursive_mutex.c
@@ -5,8 +5,10 @@
 #define _GNU_SOURCE
 
 #include <stdio.h>
+#include <unistd.h>
 #include <pthread.h>
 
+
 static void lock_twice(pthread_mutex_t* const p)
 {
   pthread_mutex_lock(p);