https://git.ruby-lang.org/ruby.git/commit/?id=15eba4ed0e

From 15eba4ed0ebb4e019a037b0af10b34fdbc85e03a Mon Sep 17 00:00:00 2001
From: nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 9 Dec 2019 12:06:38 +0000
Subject: merge revision(s)
 e1b592b508c72a56ae012869d97fe1580ff87246,d10451f3fd51f577e704db770de48d05044eb45c:
 [Backport #15758]

	test_module.rb: fix a typo

	* test/ruby/test_module.rb (TestModule#test_nested_get): fix a
	  typo.  nested module's name is a qualified path.

	git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67471 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	object.c: fix searching nested const paths

	* object.c (rb_mod_const_get, rb_mod_const_defined): nested const
	  paths should not search from toplevel constants.
	  [ruby-core:92202] [Bug #15758]

	git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67472 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67830 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

diff --git a/object.c b/object.c
index 4f844be..7928592 100644
--- a/object.c
+++ b/object.c
@@ -2530,7 +2530,19 @@ rb_mod_const_get(int argc, VALUE *argv, VALUE mod) https://github.com/ruby/ruby/blob/trunk/object.c#L2530
 	    name = ID2SYM(id);
 	    goto wrong_name;
 	}
-	mod = RTEST(recur) ? rb_const_get(mod, id) : rb_const_get_at(mod, id);
+#if 0
+        mod = rb_const_get_0(mod, id, beglen > 0 || !RTEST(recur), RTEST(recur), FALSE);
+#else
+        if (!RTEST(recur)) {
+            mod = rb_const_get_at(mod, id);
+        }
+        else if (beglen == 0) {
+            mod = rb_const_get(mod, id);
+        }
+        else {
+            mod = rb_const_get_from(mod, id);
+        }
+#endif
     }
 
     return mod;
@@ -2678,16 +2690,27 @@ rb_mod_const_defined(int argc, VALUE *argv, VALUE mod) https://github.com/ruby/ruby/blob/trunk/object.c#L2690
 	    name = ID2SYM(id);
 	    goto wrong_name;
 	}
-	if (RTEST(recur)) {
-	    if (!rb_const_defined(mod, id))
-		return Qfalse;
-	    mod = rb_const_get(mod, id);
-	}
-	else {
+
+#if 0
+        mod = rb_const_search(mod, id, beglen > 0 || !RTEST(recur), RTEST(recur), FALSE);
+        if (mod == Qundef) return Qfalse;
+#else
+        if (!RTEST(recur)) {
 	    if (!rb_const_defined_at(mod, id))
 		return Qfalse;
 	    mod = rb_const_get_at(mod, id);
 	}
+        else if (beglen == 0) {
+            if (!rb_const_defined(mod, id))
+                return Qfalse;
+            mod = rb_const_get(mod, id);
+        }
+        else {
+            if (!rb_const_defined_from(mod, id))
+                return Qfalse;
+            mod = rb_const_get_from(mod, id);
+        }
+#endif
 
 	if (p < pend && !RB_TYPE_P(mod, T_MODULE) && !RB_TYPE_P(mod, T_CLASS)) {
 	    rb_raise(rb_eTypeError, "%"PRIsVALUE" does not refer to class/module",
diff --git a/test/ruby/test_module.rb b/test/ruby/test_module.rb
index 9e9eb13..ef78475 100644
--- a/test/ruby/test_module.rb
+++ b/test/ruby/test_module.rb
@@ -294,8 +294,11 @@ class TestModule < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_module.rb#L294
   end
 
   def test_nested_get
-    assert_equal Other, Object.const_get([self.class, Other].join('::'))
+    assert_equal Other, Object.const_get([self.class, 'Other'].join('::'))
     assert_equal User::USER, self.class.const_get([User, 'USER'].join('::'))
+    assert_raise(NameError) {
+      Object.const_get([self.class.name, 'String'].join('::'))
+    }
   end
 
   def test_nested_get_symbol
@@ -328,6 +331,7 @@ class TestModule < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_module.rb#L331
     assert_send([Object, :const_defined?, [self.class.name, 'Other'].join('::')])
     assert_send([self.class, :const_defined?, 'User::USER'])
     assert_not_send([self.class, :const_defined?, 'User::Foo'])
+    assert_not_send([Object, :const_defined?, [self.class.name, 'String'].join('::')])
   end
 
   def test_nested_defined_symbol
diff --git a/version.h b/version.h
index b38ae7b..65491c2 100644
--- a/version.h
+++ b/version.h
@@ -1,9 +1,9 @@ https://github.com/ruby/ruby/blob/trunk/version.h#L1
 #define RUBY_VERSION "2.6.6"
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 117
+#define RUBY_PATCHLEVEL 118
 
 #define RUBY_RELEASE_YEAR 2019
-#define RUBY_RELEASE_MONTH 11
+#define RUBY_RELEASE_MONTH 12
 #define RUBY_RELEASE_DAY 9
 
 #include "ruby/version.h"
-- 
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