Test failure with `EnvUtil.gc_stress_to_class`

[hsbt]

In ruby/ruby repo, the following failure is happend with make test-bundled-gems BUNDLED_GEMS=bigdecimal and bigdecimal-3.2.3.

F
================================================================================================================================================================
Failure: test_no_memory_leak_BigDecimal(TestBigDecimal):
  rss: 23691264 => 31440896.
  <1.3271092669432918> was expected to be
  <
  <1.1>.
/Users/hsbt/Documents/github.com/ruby/ruby/tool/lib/core_assertions.rb:198:in 'block in Test::Unit::CoreAssertions#assert_no_memory_leak'
/Users/hsbt/Documents/github.com/ruby/ruby/tool/lib/core_assertions.rb:194:in 'Array#each'
/Users/hsbt/Documents/github.com/ruby/ruby/tool/lib/core_assertions.rb:194:in 'Test::Unit::CoreAssertions#assert_no_memory_leak'
/Users/hsbt/Documents/github.com/ruby/ruby/gems/src/bigdecimal/test/bigdecimal/test_bigdecimal.rb:2735:in 'TestBigDecimal#assert_no_memory_leak'
/Users/hsbt/Documents/github.com/ruby/ruby/gems/src/bigdecimal/test/bigdecimal/test_bigdecimal.rb:2743:in 'TestBigDecimal#test_no_memory_leak_BigDecimal'
     2740:
     2741:   if EnvUtil.gc_stress_to_class?
     2742:     def test_no_memory_leak_BigDecimal
  => 2743:       assert_no_memory_leak("BigDecimal('10')")
     2744:       assert_no_memory_leak("BigDecimal(b)")
     2745:     end
     2746:
================================================================================================================================================================
F
================================================================================================================================================================
Failure: test_no_memory_leak_create(TestBigDecimal):
  rss: 21086208 => 26247168.
  <1.2447552447552448> was expected to be
  <
  <1.1>.
/Users/hsbt/Documents/github.com/ruby/ruby/tool/lib/core_assertions.rb:198:in 'block in Test::Unit::CoreAssertions#assert_no_memory_leak'
/Users/hsbt/Documents/github.com/ruby/ruby/tool/lib/core_assertions.rb:194:in 'Array#each'
/Users/hsbt/Documents/github.com/ruby/ruby/tool/lib/core_assertions.rb:194:in 'Test::Unit::CoreAssertions#assert_no_memory_leak'
/Users/hsbt/Documents/github.com/ruby/ruby/gems/src/bigdecimal/test/bigdecimal/test_bigdecimal.rb:2735:in 'TestBigDecimal#assert_no_memory_leak'
/Users/hsbt/Documents/github.com/ruby/ruby/gems/src/bigdecimal/test/bigdecimal/test_bigdecimal.rb:2748:in 'TestBigDecimal#test_no_memory_leak_create'
     2745:     end
     2746:
     2747:     def test_no_memory_leak_create
  => 2748:       assert_no_memory_leak("b + 10")
     2749:     end
     2750:   end
     2751: end
================================================================================================================================================================

[tompng]

Fixed in #424, released as v3.3.0.
bundled gem updated to v3.3.1
Some failing ruby/spec tests are also updated now