--- a/Python/import.c	Thu Apr 01 20:50:35 1993 +0000
+++ b/Python/import.c	Thu Apr 01 20:59:32 1993 +0000
@@ -52,7 +52,7 @@
 extern char *argv0;
 #endif
 
-/* Magic word to reject pre-0.9.9 .pyc files */
+/* Magic word to reject .pyc files generated by other Python versions */
 
 #define MAGIC 0x99BE3AL
 
@@ -325,8 +325,11 @@
 	char *name;
 {
 	object *m;
+	int n;
 	if ((m = dictlookup(modules, name)) == NULL) {
-		if (init_builtin(name)) {
+		if ((n = init_builtin(name)) || (n = init_frozen(name))) {
+			if (n < 0)
+				return NULL;
 			if ((m = dictlookup(modules, name)) == NULL)
 				err_setstr(SystemError,
 					   "builtin module missing");
@@ -411,3 +414,38 @@
 	}
 	return 0;
 }
+
+extern struct frozen {
+	char *name;
+	char *code;
+	int size;
+} frozen_modules[];
+
+int
+init_frozen(name)
+	char *name;
+{
+	struct frozen *p;
+	codeobject *co;
+	object *m, *d, *v;
+	for (p = frozen_modules; ; p++) {
+		if (p->name == NULL)
+			return 0;
+		if (strcmp(p->name, name) == 0)
+			break;
+	}
+	if (verbose)
+		fprintf(stderr, "import %s # frozen\n", name);
+	co = (codeobject *) rds_object(p->code, p->size);
+	if (co == NULL)
+		return -1;
+	if ((m = add_module(name)) == NULL ||
+	    (d = getmoduledict(m)) == NULL ||
+	    (v = eval_code(co, d, d, (object *)NULL)) == NULL) {
+		DECREF(co);
+		return -1;
+	}
+	DECREF(co);
+	DECREF(v);
+	return 1;
+}