* hash.c (ruby_setenv): raise if putenv and SetEnvironmentVariable

  failed, because of the restriction of the size on Windows.
  based on a patch from Peter Weldon at [ruby-core:32304].  fix:
  Bug#3812, [ruby-core:32250]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29225 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/test/ruby/test_env.rb b/test/ruby/test_env.rb
index 785b6bb067..97bf8fa476 100644
--- a/test/ruby/test_env.rb
+++ b/test/ruby/test_env.rb
@@ -374,4 +374,16 @@ class TestEnv < Test::Unit::TestCase
     ENV.update({"baz"=>"quux","a"=>"b"}) {|k, v1, v2| v1 ? k + "_" + v1 + "_" + v2 : v2 }
     check(ENV.to_hash.to_a, [%w(foo bar), %w(baz baz_qux_quux), %w(a b)])
   end
+
+  def test_huge_value
+    huge_value = "bar" * 40960
+    ENV["foo"] = "bar"
+    if /mswin|mingw/ =~ RUBY_PLATFORM
+      assert_raise(Errno::EINVAL) { ENV["foo"] = huge_value }
+      assert_equal("bar", ENV["foo"])
+    else
+      assert_nothing_raised { ENV["foo"] = huge_value }
+      assert_equal(huge_value, ENV["foo"])
+    end
+  end
 end