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-rw-r--r--activesupport/lib/active_support/core_ext/kernel/reporting.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/kernel/reporting.rb b/activesupport/lib/active_support/core_ext/kernel/reporting.rb
index 526b8378a5..84986dff3c 100644
--- a/activesupport/lib/active_support/core_ext/kernel/reporting.rb
+++ b/activesupport/lib/active_support/core_ext/kernel/reporting.rb
@@ -1,4 +1,6 @@
require 'rbconfig'
+require 'stringio'
+
module Kernel
# Sets $VERBOSE to nil for the duration of the block and back to its original value afterwards.
#