k0kubun	2018-03-11 18:32:48 +0900 (Sun, 11 Mar 2018)

  New Revision: 62720

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=62720

  Log:
    test_jit.rb: add debugging output
    
    Sometimes gcc fails to exec cc1 like this:
    https://gist.github.com/ko1/c3db8b193e9cc65c39c541e10d957509
    
    I'm not sure why it happens at all. Please let me add this debugging
    output to inspect the random failure on CI for now.
    I'll remove this after we confirm it's not helpful.

  Modified files:
    trunk/test/ruby/test_jit.rb
Index: test/ruby/test_jit.rb
===================================================================
--- test/ruby/test_jit.rb	(revision 62719)
+++ test/ruby/test_jit.rb	(revision 62720)
@@ -545,6 +545,13 @@ class TestJIT < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_jit.rb#L545
   def assert_eval_with_jit(script, stdout: nil, success_count:, min_calls: 1)
     out, err = eval_with_jit(script, verbose: 1, min_calls: min_calls)
     actual = err.scan(/^#{JIT_SUCCESS_PREFIX}:/).size
+
+    # Debugging on CI
+    if stderr.include?("gcc: error trying to exec 'cc1': execvp: No such file or directory")
+      puts "test/ruby/test_jit.rb: ENV content:"
+      pp ENV
+    end
+
     assert_equal(
       success_count, actual,
       "Expected #{success_count} times of JIT success, but succeeded #{actual} times.\n\n"\

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