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@@ -320,7 +320,7 @@ private
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       end
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       STDERR.puts(output)
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       STDERR.flush
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-		end
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+		end if trappable_signals.has_key?('QUIT')
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   end
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   def revert_signal_handlers

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@@ -21,7 +21,6 @@ require 'set'
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 require 'timeout'
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 require 'passenger/message_channel'
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 require 'passenger/utils'
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-require 'passenger/native_support'
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 module Passenger
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 # An abstract base class for a server, with the following properties:
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@@ -293,7 +292,7 @@ private
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   # Reset all signal handlers to default. This is called in the child process,
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   # before entering the main loop.
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   def reset_signal_handlers
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-		Signal.list.each_key do |signal|
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+		Signal.list_trappable.each_key do |signal|
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       begin
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         @orig_signal_handlers[signal] = trap(signal, 'DEFAULT')
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       rescue ArgumentError