Use std::atomic instead of __sync_fetch_and_add for portability

[simgrid.git] / include / xbt / xbt_os_time.h

diff --git a/include/xbt/xbt_os_time.h b/include/xbt/xbt_os_time.h
index d0a4292..36aac64 100644 (file)
--- a/include/xbt/xbt_os_time.h
+++ b/include/xbt/xbt_os_time.h
@@ -10,6 +10,7 @@
 #define _XBT_OS_TIMER_H
 
 #include <xbt/misc.h>           /* XBT_PUBLIC */
+#include <stddef.h>             /* size_t */
 
 SG_BEGIN_DECL()