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enumerator.c: rb_check_funcall

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* enumerator.c (enumerator_size): use rb_check_funcall() instead of
  respond_to? and call.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42707 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2013-08-27 07:56:52 +00:00
parent 9b4b5ad27c
commit 1af4196cdf
2 changed files with 12 additions and 9 deletions
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5
ChangeLog
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@ -1,4 +1,7 @@
Tue Aug 27 16:51:21 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
Tue Aug 27 16:56:50 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* enumerator.c (enumerator_size): use rb_check_funcall() instead of
respond_to? and call.
* enumerator.c (enumerator_each): ensure that argument array size
does not overflow at appending.

16
enumerator.c
View file

@ -1007,19 +1007,19 @@ static VALUE
enumerator_size(VALUE obj)
{
struct enumerator *e = enumerator_ptr(obj);
int argc = 0;
const VALUE *argv = NULL;
VALUE size;
if (e->size_fn) {
return (*e->size_fn)(e->obj, e->args, obj);
}
if (rb_respond_to(e->size, id_call)) {
if (e->args) {
int argc = (int)RARRAY_LEN(e->args);
VALUE *argv = RARRAY_PTR(e->args);
return rb_funcall2(e->size, id_call, argc, argv);
} else {
return rb_funcall(e->size, id_call, 0);
}
if (e->args) {
argc = (int)RARRAY_LEN(e->args);
argv = RARRAY_RAWPTR(e->args);
}
size = rb_check_funcall(e->size, id_call, argc, argv);
if (size != Qundef) return size;
return e->size;
}