diff --git a/tccrun.c b/tccrun.c
index b07ab0f..55fb3d8 100644
--- a/tccrun.c
+++ b/tccrun.c
@@ -110,13 +110,30 @@ LIBTCCAPI int tcc_run(TCCState *s1, int argc, char **argv)
     if (s1->do_bounds_check) {
         void (*bound_init)(void);
         void (*bound_exit)(void);
+        void (*bound_new_region)(void *p, unsigned long size);
+        int  (*bound_delete_region)(void *p);
+        int i;
+
         /* set error function */
         rt_bound_error_msg = tcc_get_symbol_err(s1, "__bound_error_msg");
         /* XXX: use .init section so that it also work in binary ? */
         bound_init = tcc_get_symbol_err(s1, "__bound_init");
         bound_exit = tcc_get_symbol_err(s1, "__bound_exit");
+        bound_new_region = tcc_get_symbol_err(s1, "__bound_new_region");
+        bound_delete_region = tcc_get_symbol_err(s1, "__bound_delete_region");
         bound_init();
+        /* mark argv area as valid */
+        bound_new_region(argv, argc*sizeof(argv[0]));
+        for (i=0; i<argc; ++i)
+            bound_new_region(argv[i], strlen(argv[i]));
+
         ret = (*prog_main)(argc, argv);
+
+        /* unmark argv area */
+        for (i=0; i<argc; ++i)
+            bound_delete_region(argv[i]);
+        bound_delete_region(argv);
+
         bound_exit();
     } else
 #endif