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Merged r22308. [ruby-dev:39637]

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* hash.c (rb_hash): always return a fixnum value because a return
  value of rb_hash may be used as a hash value itself and bignums have
  no unique VALUE.

* test/ruby/test_hash.rb: add a test for above.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@25661 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
naruse 2009-11-05 12:22:24 +00:00
parent 60a40ecaf6
commit ee3e66e7a6
4 changed files with 32 additions and 12 deletions
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13
test/ruby/test_hash.rb
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@ -637,7 +637,16 @@ class TestHash < Test::Unit::TestCase
def test_hash_hash
assert_equal({0=>2,11=>1}.hash, {11=>1,0=>2}.hash)
assert_equal({:a=>2**29}.hash, {:a=>2**29}.hash)
assert_equal({:a=>2**61}.hash, {:a=>2**61}.hash)
end
def test_hash_bignum_hash
x = 2<<(32-3)-1
assert_equal({x=>1}.hash, {x=>1}.hash)
x = 2<<(64-3)-1
assert_equal({x=>1}.hash, {x=>1}.hash)
o = Object.new
def o.hash; 2<<100; end
assert_equal({x=>1}.hash, {x=>1}.hash)
end
end