なかだです。

やっぱりruby_wrapperを特別扱いするくらいしか思いつきません。


Index: class.c
===================================================================
RCS file: /cvs/ruby/src/ruby/class.c,v
retrieving revision 1.92
diff -U2 -p -r1.92 class.c
--- class.c	12 Sep 2005 10:44:19 -0000	1.92
+++ class.c	15 Sep 2005 11:20:52 -0000
@@ -347,4 +347,5 @@ rb_include_module(VALUE klass, VALUE mod
     VALUE p, c;
     int changed = 0;
+    int wrapper = 0;
 
     rb_frozen_class_p(klass);
@@ -359,4 +360,7 @@ rb_include_module(VALUE klass, VALUE mod
 	Check_Type(module, T_MODULE);
     }
+    if (FL_TEST(klass, FL_WRAPPER) && BUILTIN_TYPE(klass) == T_MODULE) {
+	wrapper = 1;
+    }
 
     OBJ_INFECT(klass, module);
@@ -365,6 +369,8 @@ rb_include_module(VALUE klass, VALUE mod
 	int superclass_seen = Qfalse;
 
-	if (RCLASS(klass)->m_tbl == RCLASS(module)->m_tbl)
+	if (RCLASS(klass)->m_tbl == RCLASS(module)->m_tbl) {
+	    if (wrapper) goto skip;
 	    rb_raise(rb_eArgError, "cyclic include detected");
+	}
 	/* ignore if the module included already in superclasses */
 	for (p = RCLASS(klass)->super; p; p = RCLASS(p)->super) {
Index: eval.c
===================================================================
RCS file: /cvs/ruby/src/ruby/eval.c,v
retrieving revision 1.831
diff -U2 -p -r1.831 eval.c
--- eval.c	14 Sep 2005 08:30:15 -0000	1.831
+++ eval.c	15 Sep 2005 11:21:03 -0000
@@ -1593,4 +1593,12 @@ rb_eval_string_protect(const char *str, 
 }
 
+static VALUE
+new_wrapper(void)
+{
+    VALUE mod = rb_module_new();
+    FL_SET(mod, FL_WRAPPER);
+    return mod;
+}
+
 VALUE
 rb_eval_string_wrap(const char *str, int *state)
@@ -1601,5 +1609,5 @@ rb_eval_string_wrap(const char *str, int
     VALUE val;
 
-    PUSH_CLASS(ruby_wrapper = rb_module_new());
+    PUSH_CLASS(ruby_wrapper = new_wrapper());
     ruby_top_self = rb_obj_clone(ruby_top_self);
     rb_extend_object(ruby_top_self, ruby_wrapper);
@@ -6489,5 +6497,5 @@ rb_load(VALUE fname, int wrap)
     else {
 	/* load in anonymous module as toplevel */
-	ruby_class = ruby_wrapper = rb_module_new();
+	ruby_class = ruby_wrapper = new_wrapper();
 	self = rb_obj_clone(ruby_top_self);
 	rb_extend_object(self, ruby_wrapper);
@@ -7295,6 +7303,9 @@ top_include(int argc, VALUE *argv, VALUE
     rb_secure(4);
     if (ruby_wrapper) {
+	VALUE ret;
 	rb_warning("main#include in the wrapped load is effective only in wrapper module");
-	return rb_mod_include(argc, argv, ruby_wrapper);
+	ret = rb_mod_include(argc, argv, ruby_wrapper);
+	rb_extend_object(self, ruby_wrapper);
+	return ret;
     }
     return rb_mod_include(argc, argv, rb_cObject);
Index: ruby.h
===================================================================
RCS file: /cvs/ruby/src/ruby/ruby.h,v
retrieving revision 1.122
diff -U2 -p -r1.122 ruby.h
--- ruby.h	14 Sep 2005 13:40:43 -0000	1.122
+++ ruby.h	15 Sep 2005 11:20:42 -0000
@@ -447,4 +447,5 @@ struct RBignum {
 
 #define FL_SINGLETON FL_USER0
+#define FL_WRAPPER   FL_USER1
 #define FL_MARK      (1<<5)
 #define FL_RESERVED  (1<<6)	/* will be used in the future GC */


-- 
--- 僕の前にBugはない。
--- 僕の後ろにBugはできる。
    中田 伸悦