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75b1146985
thread.c: disable VM events when stack overflow * thread.c (ruby_thread_stack_overflow): disable VM events when stack overflow occurred; it causes another stack overflow again in making backtrace object, and crashes. [ruby-core:80662] [Bug #13425] increase timeout seconds. * test/ruby/test_trace.rb (test_trace_stackoverflow): on some platforms this test fails because of timeout. disable rewind hooks. * vm.c (hook_before_rewind): skip rewind hooks if err is SystemStackError because rewind hooks can cause stack overflow again and again. * thread.c (ruby_thread_stack_overflow): do not disable all hooks. Additionally, clearing ruby_vm_event_flags is not suitable way to disable hooks. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@59232 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
77 lines
1.5 KiB
Ruby
77 lines
1.5 KiB
Ruby
# frozen_string_literal: false
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require 'test/unit'
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class TestTrace < Test::Unit::TestCase
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def test_trace
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$x = 1234
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$y = 0
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trace_var :$x, proc{$y = $x}
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$x = 40414
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assert_equal($x, $y)
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untrace_var :$x
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$x = 19660208
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assert_not_equal($x, $y)
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trace_var :$x, proc{$x *= 2}
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$x = 5
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assert_equal(10, $x)
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untrace_var :$x
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end
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def test_trace_tainted_proc
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$x = 1234
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s = proc { $y = :foo }
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trace_var :$x, s
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s.taint
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$x = 42
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assert_equal(:foo, $y)
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ensure
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untrace_var :$x
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end
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def test_trace_proc_that_raises_exception
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$x = 1234
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trace_var :$x, proc { raise }
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assert_raise(RuntimeError) { $x = 42 }
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ensure
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untrace_var :$x
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end
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def test_trace_string
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$x = 1234
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trace_var :$x, "$y = :bar"
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$x = 42
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assert_equal(:bar, $y)
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ensure
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untrace_var :$x
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end
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def test_trace_break
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bug2722 = '[ruby-core:31783]'
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a = Object.new.extend(Enumerable)
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def a.each
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yield
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end
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assert(Thread.start {
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Thread.current.add_trace_func(proc{})
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a.any? {true}
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}.value, bug2722)
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end
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def test_trace_stackoverflow
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assert_normal_exit("#{<<-"begin;"}\n#{<<~"end;"}", timeout: 60)
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begin;
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require 'tracer'
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class HogeError < StandardError
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def to_s
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message.upcase # disable tailcall optimization
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end
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end
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Tracer.stdout = open(IO::NULL, "w")
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Tracer.on
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HogeError.new.to_s
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end;
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end
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end
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