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-rw-r--r--test/ruby/test_sprintf.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/test/ruby/test_sprintf.rb b/test/ruby/test_sprintf.rb
index 467e86dd63..5ecabcc052 100644
--- a/test/ruby/test_sprintf.rb
+++ b/test/ruby/test_sprintf.rb
@@ -257,4 +257,12 @@ class TestSprintf < Test::Unit::TestCase
def test_rb_sprintf
assert(T012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789.new.inspect =~ /^#<TestSprintf::T012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789:0x[0-9a-f]+>$/)
end
+
+ def test_negative_hex
+ s1 = sprintf("%0x", -0x40000000)
+ s2 = sprintf("%0x", -0x40000001)
+ b1 = (/\.\./ =~ s1) != nil
+ b2 = (/\.\./ =~ s2) != nil
+ assert(b1 == b2, "[ruby-dev:33224]")
+ end
end