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Diffstat (limited to 'spec/ruby/core/string/codepoints_spec.rb')
-rw-r--r--spec/ruby/core/string/codepoints_spec.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/spec/ruby/core/string/codepoints_spec.rb b/spec/ruby/core/string/codepoints_spec.rb
index 0b6cde82f7..b276d0baa8 100644
--- a/spec/ruby/core/string/codepoints_spec.rb
+++ b/spec/ruby/core/string/codepoints_spec.rb
@@ -11,7 +11,7 @@ describe "String#codepoints" do
end
it "raises an ArgumentError when no block is given if self has an invalid encoding" do
- s = "\xDF".force_encoding(Encoding::UTF_8)
+ s = "\xDF".dup.force_encoding(Encoding::UTF_8)
s.valid_encoding?.should be_false
-> { s.codepoints }.should raise_error(ArgumentError)
end