begin require "socket" require "test/unit" rescue LoadError end class TestTCPSocket < Test::Unit::TestCase def test_recvfrom # [ruby-dev:24705] c = s = nil svr = TCPServer.new("localhost", 0) th = Thread.new { c = svr.accept ObjectSpace.each_object(String) {|s| s.replace "a" if s.length == 0x10000 and !s.frozen? } c.print("x"*0x1000) } addr = svr.addr sock = TCPSocket.open(addr[2], addr[1]) assert_raise(RuntimeError, SocketError) { sock.recvfrom(0x10000) } ensure th.join end end if defined?(TCPSocket)