merge revision(s) 44525,44534,44537: [Backport #9381]

* hash.c (rb_objid_hash): return hash value from object ID with a
	  salt, extract from rb_any_hash().

	* object.c (rb_obj_hash): return same value as rb_any_hash().
	  fix r44125.  [ruby-core:59638] [Bug #9381]

	* hash.c (rb_any_hash): should treat the return value of rb_objid_hash()
	  as `long', because ruby assumes the object id of an object is `long'.
	  this fixes test failures on mswin64 introduced at r44525.

	* hash.c (rb_objid_hash): should return `long'.  brushup r44534.

	* object.c (rb_obj_hash): follow above change.
	  as `long', because ruby assumes the hash value of the object id of
	  an object is `long'.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@44846 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,24 @@
+Wed Feb  5 23:43:30 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* hash.c (rb_objid_hash): should return `long'.  brushup r44534.
+
+	* object.c (rb_obj_hash): follow above change.
+
+Wed Feb  5 23:43:30 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* hash.c (rb_any_hash): should treat the return value of rb_objid_hash()
+	  as `long', because ruby assumes the hash value of the object id of
+	  an object is `long'.
+	  this fixes test failures on mswin64 introduced at r44525.
+
+Wed Feb  5 23:43:30 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* hash.c (rb_objid_hash): return hash value from object ID with a
+	  salt, extract from rb_any_hash().
+
+	* object.c (rb_obj_hash): return same value as rb_any_hash().
+	  fix r44125.  [ruby-core:59638] [Bug #9381]
+
 Wed Feb  5 22:28:41 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm_insnhelper.c (vm_search_super_method): allow bound method from a

hash.c

@@ -123,6 +123,8 @@ rb_hash(VALUE obj)
     return hval;
 }
 
+long rb_objid_hash(st_index_t index);
+
 static st_index_t
 rb_any_hash(VALUE a)
 {
@@ -131,9 +133,7 @@ rb_any_hash(VALUE a)
 
     if (SPECIAL_CONST_P(a)) {
 	if (a == Qundef) return 0;
-	hnum = rb_hash_start((st_index_t)a);
-	hnum = rb_hash_uint(hnum, (st_index_t)rb_any_hash);
-	hnum = rb_hash_end(hnum);
+	hnum = rb_objid_hash((st_index_t)a);
     }
     else if (BUILTIN_TYPE(a) == T_STRING) {
 	hnum = rb_str_hash(a);
@@ -146,6 +146,15 @@ rb_any_hash(VALUE a)
     return (st_index_t)RSHIFT(hnum, 1);
 }
 
+long
+rb_objid_hash(st_index_t index)
+{
+    st_index_t hnum = rb_hash_start(index);
+    hnum = rb_hash_uint(hnum, (st_index_t)rb_any_hash);
+    hnum = rb_hash_end(hnum);
+    return hnum;
+}
+
 static const struct st_hash_type objhash = {
     rb_any_cmp,
     rb_any_hash,

object.c

@@ -161,6 +161,7 @@ rb_obj_equal(VALUE obj1, VALUE obj2)
 VALUE
 rb_obj_hash(VALUE obj)
 {
+    long rb_objid_hash(st_index_t index);
     VALUE oid = rb_obj_id(obj);
 #if SIZEOF_LONG == SIZEOF_VOIDP
     st_index_t index = NUM2LONG(oid);
@@ -169,8 +170,7 @@ rb_obj_hash(VALUE obj)
 #else
 # error not supported
 #endif
-    st_index_t h = rb_hash_end(rb_hash_start(index));
-    return LONG2FIX(h);
+    return LONG2FIX(rb_objid_hash(index));
 }
 
 /*

test/ruby/test_hash.rb

@@ -1228,6 +1228,27 @@ class TestHash < Test::Unit::TestCase
     assert_no_memory_leak([], prepare, code, bug9187)
   end
 
+  def test_wrapper_of_special_const
+    bug9381 = '[ruby-core:59638] [Bug #9381]'
+
+    wrapper = Class.new do
+      def initialize(obj)
+        @obj = obj
+      end
+
+      def hash
+        @obj.hash
+      end
+
+      def eql?(other)
+        @obj.eql?(other)
+      end
+    end
+
+    hash = {5 => bug9381}
+    assert_equal(bug9381, hash[wrapper.new(5)])
+  end
+
   class TestSubHash < TestHash
     class SubHash < Hash
       def reject(*)

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.1.1"
 #define RUBY_RELEASE_DATE "2014-02-05"
-#define RUBY_PATCHLEVEL 21
+#define RUBY_PATCHLEVEL 22
 
 #define RUBY_RELEASE_YEAR 2014
 #define RUBY_RELEASE_MONTH 2