Update to ruby/spec@8b743a3

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65388 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 2 deletions

diff --git a/spec/ruby/core/array/fixtures/classes.rb b/spec/ruby/core/array/fixtures/classes.rb
index 2f8671b29a..7ca9067328 100644
--- a/spec/ruby/core/array/fixtures/classes.rb
+++ b/spec/ruby/core/array/fixtures/classes.rb
@@ -2,9 +2,10 @@ class Object
   # This helper is defined here rather than in MSpec because
   # it is only used in #pack specs.
   def pack_format(count=nil, repeat=nil)
-    format = "#{instance_variable_get(:@method)}#{count}"
+    format = instance_variable_get(:@method)
+    format += count.to_s unless format == 'P' || format == 'p'
     format *= repeat if repeat
-    format
+    format.dup # because it may then become tainted
   end
 end