include stddef.h

diff --git a/src/regint.h b/src/regint.h
index 99427036d68bdc284808a2a62cd61a3aaf19ad38..df86121fa93951f6864d24719b22b96e8ec82cc6 100644 (file)
--- a/src/regint.h
+++ b/src/regint.h
@@ -138,6 +138,8 @@
 #endif
 
 
+#include <stddef.h>
+
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #endif