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hash.c: fix oob access

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* hash.c (rb_hash_default): do not access argv when no arguments
  is given.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52496 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-11-08 08:32:51 +00:00
parent 1803427660
commit 12c244d347
1 changed files with 4 additions and 3 deletions
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7
hash.c
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@ -902,14 +902,15 @@ rb_hash_fetch(VALUE hash, VALUE key)
static VALUE
rb_hash_default(int argc, VALUE *argv, VALUE hash)
{
VALUE key, ifnone;
VALUE args[2], ifnone;
rb_check_arity(argc, 0, 1);
key = argv[0];
ifnone = RHASH_IFNONE(hash);
if (FL_TEST(hash, HASH_PROC_DEFAULT)) {
if (argc == 0) return Qnil;
return rb_funcall(ifnone, id_yield, 2, hash, key);
args[0] = hash;
args[1] = argv[0];
return rb_funcallv(ifnone, id_yield, 2, args);
}
return ifnone;
}