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-rw-r--r--bootstraptest/test_knownbug.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/bootstraptest/test_knownbug.rb b/bootstraptest/test_knownbug.rb
index 8ae5dc741..23a020a77 100644
--- a/bootstraptest/test_knownbug.rb
+++ b/bootstraptest/test_knownbug.rb
@@ -42,3 +42,6 @@ assert_normal_exit %q{
}
}, '[ruby-dev:31985]'
+assert_normal_exit %q{
+ Regexp.union("a", "a")
+}