[ruby-core:71548] [Ruby trunk - Bug #10449] [TracePoint API] Duplicated line events when using parenthesis

Issue #10449 has been updated by Usaku NAKAMURA.

Backport changed from 2.0.0: UNKNOWN, 2.1: REQUIRED, 2.2: DONTNEED to 2.0.0: UNKNOWN, 2.1: DONE, 2.2: DONTNEED

ruby_2_1 r52640 merged revision(s) 48609.

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Bug #10449: [TracePoint API] Duplicated line events when using parenthesis
https://bugs.ruby-lang.org/issues/10449#change-54925

* Author: David Rodr鱈guez
* Status: Closed
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.1.4p265 (2014-10-27 revision 48166) [i686-linux]
* Backport: 2.0.0: UNKNOWN, 2.1: DONE, 2.2: DONTNEED
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Sometimes, when using parenthesis, I get duplicated lines events from the TracePoint API. See the failing test case, it generates 2 line events where I think it should generate just one. 

    def test_no_duplicate_line_events
      events = []
      TracePoint.new(:line) { |tp| events << tp.event }.enable { a = (1) * 5 }

      assert_equal [:line], events
    end

Thanks!!



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