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* class.c (rewrite_cref_stack, clone_method): rewrite a method's cref

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stack when cloning into a new class to allow lexical const lookup to
  work as expected [ruby-core:47834] [Bug #7107]
* test/ruby/test_class.rb (class TestClass): related test

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38423 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
charliesome 2012-12-17 09:49:00 +00:00
parent 6d8ad6c489
commit a70bb8889b
3 changed files with 39 additions and 0 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
Mon Dec 17 18:03:34 2012 Charlie Somerville <charlie@charliesomerville.com>
* class.c (rewrite_cref_stack, clone_method): rewrite a method's cref
stack when cloning into a new class to allow lexical const lookup to
work as expected [ruby-core:47834] [Bug #7107]
* test/ruby/test_class.rb (class TestClass): related test
Mon Dec 17 13:56:55 2012 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
* io.c (io_flush_buffer_sync2): avoid to return 0. because

18
class.c
View file

@ -121,6 +121,23 @@ rb_class_new(VALUE super)
return rb_class_boot(super);
}
static NODE*
rewrite_cref_stack(NODE *node, VALUE old_klass, VALUE new_klass)
{
NODE *new_node;
if (!node) {
return NULL;
}
if (node->nd_clss == old_klass) {
new_node = NEW_CREF(new_klass);
new_node->nd_next = node->nd_next;
} else {
new_node = NEW_CREF(node->nd_clss);
new_node->nd_next = rewrite_cref_stack(node->nd_next, old_klass, new_klass);
}
return new_node;
}
static void
clone_method(VALUE klass, ID mid, const rb_method_entry_t *me)
{
@ -129,6 +146,7 @@ clone_method(VALUE klass, ID mid, const rb_method_entry_t *me)
rb_iseq_t *iseq;
newiseqval = rb_iseq_clone(me->def->body.iseq->self, klass);
GetISeqPtr(newiseqval, iseq);
iseq->cref_stack = rewrite_cref_stack(me->def->body.iseq->cref_stack, me->klass, klass);
rb_add_method(klass, mid, VM_METHOD_TYPE_ISEQ, iseq, me->flag);
RB_GC_GUARD(newiseqval);
}

14
test/ruby/test_class.rb
View file

@ -285,4 +285,18 @@ class TestClass < Test::Unit::TestCase
p A.superclass
RUBY
end
module M
C = 1
def self.m
C
end
end
def test_constant_access_from_method_in_cloned_module # [ruby-core:47834]
m = M.dup
assert_equal 1, m::C
assert_equal 1, m.m
end
end