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Fix Kernel#singleton_method with Module#Prepend

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* proc.c (rb_obj_singleton_method): search the method entry from
  the origin class, for fix prepended modules.  [Bug #14658]

From: Vasiliy Ermolovich <younash@gmail.com>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63067 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-04-03 06:57:43 +00:00
parent 5bcb76ebbd
commit c7770f90bd
2 changed files with 13 additions and 3 deletions
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6
proc.c
View file

@ -1771,11 +1771,11 @@ VALUE
rb_obj_singleton_method(VALUE obj, VALUE vid) rb_obj_singleton_method(VALUE obj, VALUE vid)
{ {
const rb_method_entry_t *me; const rb_method_entry_t *me;
VALUE klass; VALUE klass = RCLASS_ORIGIN(rb_singleton_class_get(obj));
ID id = rb_check_id(&vid); ID id = rb_check_id(&vid);
if (!id) { if (!id) {
if (!NIL_P(klass = rb_singleton_class_get(obj)) && if (!NIL_P(klass) &&
respond_to_missing_p(klass, obj, vid, FALSE)) { respond_to_missing_p(klass, obj, vid, FALSE)) {
id = rb_intern_str(vid); id = rb_intern_str(vid);
return mnew_missing(klass, obj, id, rb_cMethod); return mnew_missing(klass, obj, id, rb_cMethod);
@ -1784,7 +1784,7 @@ rb_obj_singleton_method(VALUE obj, VALUE vid)
rb_name_err_raise("undefined singleton method `%1$s' for `%2$s'", rb_name_err_raise("undefined singleton method `%1$s' for `%2$s'",
obj, vid); obj, vid);
} }
if (NIL_P(klass = rb_singleton_class_get(obj)) || if (NIL_P(klass) ||
UNDEFINED_METHOD_ENTRY_P(me = rb_method_entry_at(klass, id)) || UNDEFINED_METHOD_ENTRY_P(me = rb_method_entry_at(klass, id)) ||
UNDEFINED_REFINED_METHOD_P(me->def)) { UNDEFINED_REFINED_METHOD_P(me->def)) {
vid = ID2SYM(id); vid = ID2SYM(id);

10
test/ruby/test_method.rb
View file

@ -782,6 +782,16 @@ class TestMethod < Test::Unit::TestCase
assert_equal(:bar, m.call, feature8391) assert_equal(:bar, m.call, feature8391)
end end
def test_singleton_method_prepend
bug14658 = '[Bug #14658]'
c1 = Class.new
o = c1.new
def o.bar; :bar; end
class << o; prepend Module.new; end
m = assert_nothing_raised(NameError, bug14658) {o.singleton_method(:bar)}
assert_equal(:bar, m.call, bug14658)
end
Feature9783 = '[ruby-core:62212] [Feature #9783]' Feature9783 = '[ruby-core:62212] [Feature #9783]'
def assert_curry_three_args(m) def assert_curry_three_args(m)