* vm.c (vm_set_top_stack, vm_set_eval_stack): check for stack

  overflow with stack_max before push new frame. [ruby-core:41520]
  [Bug #5720]
* vm.c (vm_set_main_stack): no stack overflow chances after
  vm_set_eval_stack().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33970 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_exception.rb b/test/ruby/test_exception.rb
index 52dd4665a1..1d16da695c 100644
--- a/test/ruby/test_exception.rb
+++ b/test/ruby/test_exception.rb
@@ -328,4 +328,10 @@ end.join
   def test_errno
     assert_equal(Encoding.find("locale"), Errno::EINVAL.new.message.encoding)
   end
+
+  def test_too_many_args_in_eval
+    bug5720 = '[ruby-core:41520]'
+    arg_string = (0...140000).to_a.join(", ")
+    assert_raise(SystemStackError, bug5720) {eval "raise(#{arg_string})"}
+  end
 end