use SIGUSR2 to debug.

* test/ruby/test_io.rb: use SIGUSR2 instead of SIGUSR1 to confirm
  unknown SIGUSR1 exception. On parallel testing, sometime
  (1 per some days) SIGUSR1 exception. This fix will make clear which
  signal is a suspect.

  http://ci.rvm.jp/results/trunk-test@ruby-sky3/643893


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62754 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 5 deletions

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index f1a9453ae9..7d7e198334 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -84,12 +84,12 @@ class TestIO < Test::Unit::TestCase
     }
   end
 
-  def trapping_usr1
+  def trapping_usr2
     @usr1_rcvd  = 0
-    trap(:USR1) { @usr1_rcvd += 1 }
+    trap(:USR2) { @usr1_rcvd += 1 }
     yield
   ensure
-    trap(:USR1, "DEFAULT")
+    trap(:USR2, "DEFAULT")
   end
 
   def test_pipe
@@ -865,13 +865,13 @@ class TestIO < Test::Unit::TestCase
         rescue Errno::EBADF
           skip "nonblocking IO for pipe is not implemented"
         end
-        trapping_usr1 do
+        trapping_usr2 do
           nr = 30
           begin
             pid = fork do
               s1.close
               IO.select([s2])
-              Process.kill(:USR1, Process.ppid)
+              Process.kill(:USR2, Process.ppid)
               buf = String.new(capacity: 16384)
               nil while s2.read(16384, buf)
             end