* signal.c (sig_trap): don't permit to change a signal handler which

  the interpreter reserved.
* signal.c (reserved_signal_p): ditto.
  [Bug #2616] [ruby-core:27625]

* test/ruby/test_signal.rb (TestSignal#test_reserved_signal):
  added a test for reserved signal.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32523 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 25 insertions, 0 deletions

diff --git a/test/ruby/test_signal.rb b/test/ruby/test_signal.rb
index c226fdd611..cd1f2c04b1 100644
--- a/test/ruby/test_signal.rb
+++ b/test/ruby/test_signal.rb
@@ -220,4 +220,29 @@ EOS
     t.close!
     assert_nil(error)
   end
+
+  def test_reserved_signal
+    assert_raise(ArgumentError) {
+      Signal.trap(:SEGV) {}
+    }
+    assert_raise(ArgumentError) {
+      Signal.trap(:BUS) {}
+    }
+    assert_raise(ArgumentError) {
+      Signal.trap(:ILL) {}
+    }
+    assert_raise(ArgumentError) {
+      Signal.trap(:FPE) {}
+    }
+    assert_raise(ArgumentError) {
+      Signal.trap(:VTALRM) {}
+    }
+    assert_raise(ArgumentError) {
+      Signal.trap(:CHLD) {}
+    }
+    assert_raise(ArgumentError) {
+      Signal.trap(:CLD) {}
+    }
+  end
+
 end