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* array.c (rb_ary_slice_bang): Return an empty array instead of

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nil when pos is valid and len is adjusted from a valid value to
  zero; caught by RubySpec.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@16643 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
knu 2008-05-27 11:18:50 +00:00
parent 0d3d7c3a1c
commit c3e7816a78
2 changed files with 9 additions and 2 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Tue May 27 20:18:30 2008 Akinori MUSHA <knu@iDaemons.org>
* array.c (rb_ary_slice_bang): Return an empty array instead of
nil when pos is valid and len is adjusted from a valid value to
zero; caught by RubySpec.
Tue May 27 19:12:37 2008 Nobuyoshi Nakada <nobu@ruby-lang.org>
* Makefile.in (MKPREP), common.mk, win32/Makefile.sub (prelude.c): get

5
array.c
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@ -1815,13 +1815,14 @@ rb_ary_slice_bang(int argc, VALUE *argv, VALUE ary)
pos += orig_len;
if (pos < 0) return Qnil;
}
else if (orig_len <= pos) return Qnil;
else if (orig_len < pos) return Qnil;
if (orig_len < pos + len) {
len = orig_len - pos;
}
if (len == 0) return rb_ary_new2(0);
arg2 = rb_ary_new4(len, RARRAY_PTR(ary)+pos);
RBASIC(arg2)->klass = rb_obj_class(ary);
rb_ary_splice(ary, pos, len, Qundef); /* Qnil/rb_ary_new2(0) */
rb_ary_splice(ary, pos, len, Qundef);
return arg2;
}