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-rw-r--r--test/socket/test_nonblock.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/test/socket/test_nonblock.rb b/test/socket/test_nonblock.rb
index 55198ba4dd..3f8d548c5e 100644
--- a/test/socket/test_nonblock.rb
+++ b/test/socket/test_nonblock.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
begin
require "socket"
require "io/nonblock"
@@ -129,7 +131,7 @@ class TestSocketNonblock < Test::Unit::TestCase
mesg = u1.recv_nonblock(100)
assert_equal("", mesg)
- buf = "short"
+ buf = "short".dup
out = "hello world" * 4
out.freeze
u2.send(out, 0, u1.getsockname)