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Close duplex pipe ends when launch fails #203

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Close duplex pipe ends when launch fails #203

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6 changes: 6 additions & 0 deletions lib/childprocess/process_spawn_process.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,7 @@ def launch_process
options[:out] = io.stdout ? io.stdout.fileno : File::NULL
options[:err] = io.stderr ? io.stderr.fileno : File::NULL

reader = writer = nil
if duplex?
reader, writer = ::IO.pipe
options[:in] = reader.fileno
Expand Down Expand Up @@ -86,6 +87,11 @@ def launch_process
@pid = ::Process.spawn(environment, *args, options)
rescue SystemCallError => e
raise LaunchError, e.message
ensure
unless @pid
reader&.close
writer&.close
end
end

if duplex?
Expand Down