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object.c: no TypeError at special const

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* object.c (special_object_p): no longer raise a TypeError for
  Integer and Float, and return itself instead.  [Feature#12979]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56933 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-11-29 15:34:31 +00:00
parent 7a480ae850
commit 7f30d00b53
2 changed files with 19 additions and 2 deletions
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17
object.c
View file

@ -297,6 +297,19 @@ init_copy(VALUE dest, VALUE obj)
}
}
static inline int
special_object_p(VALUE obj)
{
if (SPECIAL_CONST_P(obj)) return TRUE;
switch (BUILTIN_TYPE(obj)) {
case T_BIGNUM:
case T_FLOAT:
return TRUE;
default:
return FALSE;
}
}
/*
* call-seq:
* obj.clone(freeze: true) -> an_object
@ -345,7 +358,7 @@ rb_obj_clone2(int argc, VALUE *argv, VALUE obj)
}
}
if (rb_special_const_p(obj)) {
if (special_object_p(obj)) {
if (kwfreeze == Qfalse)
rb_raise(rb_eArgError, "can't unfreeze %s", rb_obj_classname(obj));
return obj;
@ -424,7 +437,7 @@ rb_obj_dup(VALUE obj)
{
VALUE dup;
if (rb_special_const_p(obj)) {
if (special_object_p(obj)) {
return obj;
}
dup = rb_obj_alloc(rb_obj_class(obj));

4
test/ruby/test_object.rb
View file

@ -23,6 +23,8 @@ class TestObject < Test::Unit::TestCase
assert_equal true, true.dup
assert_equal nil, nil.dup
assert_equal false, false.dup
x = 1 << 64; assert_equal x, x.dup
x = 1.72723e-77; assert_equal x, x.dup
assert_raise(TypeError) do
Object.new.instance_eval { initialize_copy(1) }
@ -49,6 +51,8 @@ class TestObject < Test::Unit::TestCase
assert_equal true, true.clone
assert_equal nil, nil.clone
assert_equal false, false.clone
x = 1 << 64; assert_equal x, x.clone
x = 1.72723e-77; assert_equal x, x.clone
assert_raise(ArgumentError) {1.clone(freeze: false)}
assert_raise(ArgumentError) {true.clone(freeze: false)}
assert_raise(ArgumentError) {nil.clone(freeze: false)}