--- a/test/test-fork.cc	Mon Oct 11 10:54:29 2010 +0200
+++ b/test/test-fork.cc	Mon Oct 11 10:59:12 2010 +0200
@@ -1,27 +1,46 @@
 #include <unistd.h>
 #include "test-macros.h"
 
+static int g_static;
+int g_global;
+
 static void test_fork (void)
 {
   int parent = 1;
+  g_static = 1;
+  g_global = 1;
   pid_t pid = fork ();
   if (pid == 0)
     {
       // child.
       TEST_ASSERT_EQUAL (parent, 1);
+      TEST_ASSERT_EQUAL (g_static, 1);
+      TEST_ASSERT_EQUAL (g_global, 1);
       parent = 2;
+      g_static = 2;
+      g_global = 2;
       sleep (2);
       TEST_ASSERT_EQUAL (parent, 2);
+      TEST_ASSERT_EQUAL (g_static, 2);
+      TEST_ASSERT_EQUAL (g_global, 2);
       sleep (10);
     }
   else
     {
       TEST_ASSERT_EQUAL (parent, 1);
+      TEST_ASSERT_EQUAL (g_static, 1);
+      TEST_ASSERT_EQUAL (g_global, 1);
       sleep (1);
       TEST_ASSERT_EQUAL (parent, 1);
+      TEST_ASSERT_EQUAL (g_static, 1);
+      TEST_ASSERT_EQUAL (g_global, 1);
       parent = 0;
+      g_static = 0;
+      g_global = 0;
       sleep (10);
       TEST_ASSERT_EQUAL (parent, 0);
+      TEST_ASSERT_EQUAL (g_static, 0);
+      TEST_ASSERT_EQUAL (g_global, 0);
     }
 }