merge revision(s) 55554: [Backport #12537]

	* test/fiddle/test_pointer.rb (test_to_str, test_to_s, test_aref_aset):
	  Attempt to use independent strings for destructive tests that
	  directly modify values on memory by using Fiddle::Pointer.
	  [Bug #12537] [ruby-dev:49700]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@55989 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 3 deletions

diff --git a/test/fiddle/test_pointer.rb b/test/fiddle/test_pointer.rb
index ec677324eb..aa77c619ef 100644
--- a/test/fiddle/test_pointer.rb
+++ b/test/fiddle/test_pointer.rb
@@ -35,7 +35,7 @@ module Fiddle
     end
 
     def test_to_str
-      str = "hello world"
+      str = Marshal.load(Marshal.dump("hello world"))
       ptr = Pointer[str]
 
       assert_equal 3, ptr.to_str(3).length
@@ -46,7 +46,7 @@ module Fiddle
     end
 
     def test_to_s
-      str = "hello world"
+      str = Marshal.load(Marshal.dump("hello world"))
       ptr = Pointer[str]
 
       assert_equal 3, ptr.to_s(3).length
@@ -202,7 +202,7 @@ module Fiddle
         assert_equal(str[0].ord, ptr[0])
         assert_equal(str[1].ord, ptr[1])
       }
-      str = 'abc'
+      str = Marshal.load(Marshal.dump('abc'))
       ptr = Pointer[str]
       check.call(str, ptr)