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Avoid top-level search for nested constant reference from nil in defined?

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Fixes [Bug #16332]

Constant access was changed to no longer allow top-level constant access
through `nil`, but `defined?` wasn't changed at the same time to stay
consistent.

Use a separate defined type to distinguish between a constant
referenced from the current lexical scope and one referenced from
another namespace.
This commit is contained in:
Dylan Thacker-Smith 2019-11-06 01:47:32 -05:00 • committed by Nobuyoshi Nakada
parent a5b6d7bca8
commit ac112f2b5d
Notes: git 2019-11-13 15:37:26 +09:00
6 changed files with 28 additions and 11 deletions
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5
test/ruby/test_const.rb
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@ -50,8 +50,13 @@ class TestConst < Test::Unit::TestCase
def test_const_access_from_nil
assert_raise(TypeError) { eval("nil::Object") }
assert_nil eval("defined?(nil::Object)")
assert_raise(TypeError) { eval("c = nil; c::Object") }
assert_nil eval("c = nil; defined?(c::Object)")
assert_raise(TypeError) { eval("sc = Class.new; sc::C = nil; sc::C::Object") }
assert_nil eval("sc = Class.new; sc::C = nil; defined?(sc::C::Object)")
end
def test_redefinition