Fix C level backtrace on Darwin

SEGV caused by invalid instruction call.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59710 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 0 deletions

diff --git a/test/ruby/test_vm_dump.rb b/test/ruby/test_vm_dump.rb
new file mode 100644
index 0000000000..9ea725f233
--- /dev/null
+++ b/test/ruby/test_vm_dump.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+require 'test/unit'
+
+class TestVMDump < Test::Unit::TestCase
+  def assert_vm_dump_works(args)
+    assert_in_out_err(args, "", [], [:*, /^.* main \+ \d+$/, :*, /^\[IMPORTANT\]/, :*])
+  end
+
+  def test_darwin_invalid_call
+    assert_vm_dump_works(['-rfiddle', '-eFiddle::Function.new(Fiddle::Pointer.new(1), [], Fiddle::TYPE_VOID).call'])
+  end
+
+  def test_darwin_segv_in_syscall
+    assert_vm_dump_works('-e1.times{Process.kill :SEGV,$$}')
+  end
+
+  def test_darwin_invalid_access
+    assert_vm_dump_works(['-rfiddle', '-eFiddle.dlunwrap(100).class'])
+  end
+end