diff --git a/SWIG/Examples/test-suite/arrays.i b/SWIG/Examples/test-suite/arrays.i
index 37a4f0029..decce7415 100644
--- a/SWIG/Examples/test-suite/arrays.i
+++ b/SWIG/Examples/test-suite/arrays.i
@@ -3,6 +3,9 @@ This test case tests that various types of arrays are working.
 */
 
 %module arrays
+%{
+#include <stdlib.h>
+%}
 
 %inline %{
 #define ARRAY_LEN 2
diff --git a/SWIG/Examples/test-suite/lextype.i b/SWIG/Examples/test-suite/lextype.i
index 5128cbaa4..0c0ef66fe 100644
--- a/SWIG/Examples/test-suite/lextype.i
+++ b/SWIG/Examples/test-suite/lextype.i
@@ -23,6 +23,9 @@ code is not functioning properly it will fail to compile.
 */
 
 %module lextype
+%{
+#include <stdlib.h>
+%}
 
 %typemap(in) Animal ()
 {
diff --git a/SWIG/Examples/test-suite/newobject2.i b/SWIG/Examples/test-suite/newobject2.i
index f0c43edeb..92b997e5d 100644
--- a/SWIG/Examples/test-suite/newobject2.i
+++ b/SWIG/Examples/test-suite/newobject2.i
@@ -6,6 +6,10 @@
 
 %module newobject2
 
+%{
+#include <stdlib.h>
+%}
+
 %{
 /* Global initialization (not wrapped) */
 int g_fooCount = 0;
diff --git a/SWIG/Examples/test-suite/overload_extend.i b/SWIG/Examples/test-suite/overload_extend.i
index 70225c847..6199d9be3 100644
--- a/SWIG/Examples/test-suite/overload_extend.i
+++ b/SWIG/Examples/test-suite/overload_extend.i
@@ -1,6 +1,10 @@
 %module overload_extend
 
 #ifndef __cplusplus
+%{
+#include <stdlib.h>
+%}
+
 %typemap(default) double y "$1=1000;";
 #endif
 
diff --git a/SWIG/Examples/test-suite/private_assign.i b/SWIG/Examples/test-suite/private_assign.i
index ce1258e16..acc4d0bc9 100644
--- a/SWIG/Examples/test-suite/private_assign.i
+++ b/SWIG/Examples/test-suite/private_assign.i
@@ -3,6 +3,9 @@
 // objects that have complicated state.
 
 %module private_assign
+%{
+#include <stdlib.h>
+%}
 
 %inline %{
    class Foo {