From 6d81969b475262aba251e99b518181bdf7c5a523 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Fri, 7 Nov 2025 16:41:47 +0900
Subject: [PATCH 01/10] Development of 4.0.0 started.

---
 NEWS.md                     | 2 +-
 include/ruby/internal/abi.h | 2 +-
 include/ruby/version.h      | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/NEWS.md b/NEWS.md
index b22cf5c290e9ae..3407140eecddb9 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# NEWS for Ruby 3.5.0
+# NEWS for Ruby 4.0.0
 
 This document is a list of user-visible feature changes
 since the **3.4.0** release, except for bug fixes.
diff --git a/include/ruby/internal/abi.h b/include/ruby/internal/abi.h
index 322761fc683341..e735a67564d885 100644
--- a/include/ruby/internal/abi.h
+++ b/include/ruby/internal/abi.h
@@ -24,7 +24,7 @@
  * In released versions of Ruby, this number is not defined since teeny
  * versions of Ruby should guarantee ABI compatibility.
  */
-#define RUBY_ABI_VERSION 4
+#define RUBY_ABI_VERSION 0
 
 /* Windows does not support weak symbols so ruby_abi_version will not exist
  * in the shared library. */
diff --git a/include/ruby/version.h b/include/ruby/version.h
index a521d925edd7ce..24c846a1ca6ce2 100644
--- a/include/ruby/version.h
+++ b/include/ruby/version.h
@@ -61,13 +61,13 @@
  * doesn't mean a total rewrite.  Practically  when it comes to API versioning,
  * major and minor version changes are equally catastrophic.
  */
-#define RUBY_API_VERSION_MAJOR 3
+#define RUBY_API_VERSION_MAJOR 4
 
 /**
  * Minor  version.   As of  writing  this  version changes  annually.   Greater
  * version doesn't mean "better"; they just mean years passed.
  */
-#define RUBY_API_VERSION_MINOR 5
+#define RUBY_API_VERSION_MINOR 0
 
 /**
  * Teeny version.  This digit  is kind of reserved these days.   Kept 0 for the

From da6ba845545036f9bb89dae390dda78e23a3a337 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Fri, 7 Nov 2025 09:45:06 +0100
Subject: [PATCH 02/10] [ruby/json] Get rid of JSON.deep_const_get (private
 API)

https://github.com/ruby/json/commit/826cb2a4f4
---
 ext/json/lib/json/common.rb             | 19 +++++++------------
 test/json/json_common_interface_test.rb |  5 -----
 2 files changed, 7 insertions(+), 17 deletions(-)

diff --git a/ext/json/lib/json/common.rb b/ext/json/lib/json/common.rb
index 60178c2a59c464..f22d911f552ec5 100644
--- a/ext/json/lib/json/common.rb
+++ b/ext/json/lib/json/common.rb
@@ -71,8 +71,13 @@ def create_additions_proc(opts)
             end
           when object_class
             if opts[:create_additions] != false
-              if class_name = object[JSON.create_id]
-                klass = JSON.deep_const_get(class_name)
+              if class_path = object[JSON.create_id]
+                klass = begin
+                  Object.const_get(class_path)
+                rescue NameError => e
+                  raise ArgumentError, "can't get const #{class_path}: #{e}"
+                end
+
                 if klass.respond_to?(:json_creatable?) ? klass.json_creatable? : klass.respond_to?(:json_create)
                   create_additions_warning if create_additions.nil?
                   object = klass.json_create(object)
@@ -147,16 +152,6 @@ def parser=(parser) # :nodoc:
       const_set :Parser, parser
     end
 
-    # Return the constant located at _path_. The format of _path_ has to be
-    # either ::A::B::C or A::B::C. In any case, A has to be located at the top
-    # level (absolute namespace path?). If there doesn't exist a constant at
-    # the given path, an ArgumentError is raised.
-    def deep_const_get(path) # :nodoc:
-      Object.const_get(path)
-    rescue NameError => e
-      raise ArgumentError, "can't get const #{path}: #{e}"
-    end
-
     # Set the module _generator_ to be used by JSON.
     def generator=(generator) # :nodoc:
       old, $VERBOSE = $VERBOSE, nil
diff --git a/test/json/json_common_interface_test.rb b/test/json/json_common_interface_test.rb
index 077d7e1539666e..37fa439575cd87 100644
--- a/test/json/json_common_interface_test.rb
+++ b/test/json/json_common_interface_test.rb
@@ -68,11 +68,6 @@ def test_create_id
     JSON.create_id = 'json_class'
   end
 
-  def test_deep_const_get
-    assert_raise(ArgumentError) { JSON.deep_const_get('Nix::Da') }
-    assert_equal File::SEPARATOR, JSON.deep_const_get('File::SEPARATOR')
-  end
-
   def test_parse
     assert_equal [ 1, 2, 3, ], JSON.parse('[ 1, 2, 3 ]')
   end

From cd8902cce871144931a492408945d233f0926584 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Fri, 7 Nov 2025 09:51:34 +0100
Subject: [PATCH 03/10] [ruby/json] Deprecate `JSON::State#[]` and
 `JSON::State#[]=`

This prevent from freezing and sharing state instances.

If you needs some sort of arguments or extra state to the generator
methods, consider using `JSON::Coder` instead.

https://github.com/ruby/json/commit/e9fbc8937f
---
 ext/json/lib/json/ext/generator/state.rb |  4 ++
 test/json/json_generator_test.rb         | 50 ++++++++++++++----------
 2 files changed, 33 insertions(+), 21 deletions(-)

diff --git a/ext/json/lib/json/ext/generator/state.rb b/ext/json/lib/json/ext/generator/state.rb
index 1f56e6c682cc6d..ce5c185cabeed2 100644
--- a/ext/json/lib/json/ext/generator/state.rb
+++ b/ext/json/lib/json/ext/generator/state.rb
@@ -75,6 +75,8 @@ def to_h
         #
         # Returns the value returned by method +name+.
         def [](name)
+          ::JSON.deprecation_warning("JSON::State#[] is deprecated and will be removed in json 3.0.0")
+
           if respond_to?(name)
             __send__(name)
           else
@@ -87,6 +89,8 @@ def [](name)
         #
         # Sets the attribute name to value.
         def []=(name, value)
+          ::JSON.deprecation_warning("JSON::State#[]= is deprecated and will be removed in json 3.0.0")
+
           if respond_to?(name_writer = "#{name}=")
             __send__ name_writer, value
           else
diff --git a/test/json/json_generator_test.rb b/test/json/json_generator_test.rb
index a6950f88878db8..1b3c702c982f94 100755
--- a/test/json/json_generator_test.rb
+++ b/test/json/json_generator_test.rb
@@ -183,7 +183,9 @@ def test_states
     assert_equal('{"1":2}', json)
     s = JSON.state.new
     assert s.check_circular?
-    assert s[:check_circular?]
+    assert_deprecated_warning(/JSON::State/) do
+      assert s[:check_circular?]
+    end
     h = { 1=>2 }
     h[3] = h
     assert_raise(JSON::NestingError) {  generate(h) }
@@ -193,7 +195,9 @@ def test_states
     a << a
     assert_raise(JSON::NestingError) {  generate(a, s) }
     assert s.check_circular?
-    assert s[:check_circular?]
+    assert_deprecated_warning(/JSON::State/) do
+      assert s[:check_circular?]
+    end
   end
 
   def test_falsy_state
@@ -375,28 +379,32 @@ def to_s
   end
 
   def test_hash_likeness_set_symbol
-    state = JSON.state.new
-    assert_equal nil, state[:foo]
-    assert_equal nil.class, state[:foo].class
-    assert_equal nil, state['foo']
-    state[:foo] = :bar
-    assert_equal :bar, state[:foo]
-    assert_equal :bar, state['foo']
-    state_hash = state.to_hash
-    assert_kind_of Hash, state_hash
-    assert_equal :bar, state_hash[:foo]
+    assert_deprecated_warning(/JSON::State/) do
+      state = JSON.state.new
+      assert_equal nil, state[:foo]
+      assert_equal nil.class, state[:foo].class
+      assert_equal nil, state['foo']
+      state[:foo] = :bar
+      assert_equal :bar, state[:foo]
+      assert_equal :bar, state['foo']
+      state_hash = state.to_hash
+      assert_kind_of Hash, state_hash
+      assert_equal :bar, state_hash[:foo]
+    end
   end
 
   def test_hash_likeness_set_string
-    state = JSON.state.new
-    assert_equal nil, state[:foo]
-    assert_equal nil, state['foo']
-    state['foo'] = :bar
-    assert_equal :bar, state[:foo]
-    assert_equal :bar, state['foo']
-    state_hash = state.to_hash
-    assert_kind_of Hash, state_hash
-    assert_equal :bar, state_hash[:foo]
+    assert_deprecated_warning(/JSON::State/) do
+      state = JSON.state.new
+      assert_equal nil, state[:foo]
+      assert_equal nil, state['foo']
+      state['foo'] = :bar
+      assert_equal :bar, state[:foo]
+      assert_equal :bar, state['foo']
+      state_hash = state.to_hash
+      assert_kind_of Hash, state_hash
+      assert_equal :bar, state_hash[:foo]
+    end
   end
 
   def test_json_state_to_h_roundtrip

From a881f2a0f441bf6d06a68bf711ca81dd6b3a1026 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Fri, 7 Nov 2025 10:04:43 +0100
Subject: [PATCH 04/10] [ruby/json] Release 2.16.0

https://github.com/ruby/json/commit/5a12067f88
---
 ext/json/lib/json/version.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/json/lib/json/version.rb b/ext/json/lib/json/version.rb
index dc01ba290b8cc2..cc25a0453e20c9 100644
--- a/ext/json/lib/json/version.rb
+++ b/ext/json/lib/json/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module JSON
-  VERSION = '2.15.2'
+  VERSION = '2.16.0'
 end

From a00f425e824b599240415eee7c1256b224d073c9 Mon Sep 17 00:00:00 2001
From: git <svn-admin@ruby-lang.org>
Date: Fri, 7 Nov 2025 09:07:35 +0000
Subject: [PATCH 05/10] Update default gems list at
 a881f2a0f441bf6d06a68bf711ca81 [ci skip]

---
 NEWS.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/NEWS.md b/NEWS.md
index 3407140eecddb9..d8dc21f795d291 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -192,7 +192,7 @@ The following default gems are updated.
 * io-console 0.8.1
 * io-nonblock 0.3.2
 * io-wait 0.3.3
-* json 2.15.2
+* json 2.16.0
 * net-http 0.7.0
 * openssl 4.0.0.pre
 * optparse 0.8.0

From f3dd4bef786f8d56a2702b340f66e3a374c3ad3f Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Fri, 7 Nov 2025 18:41:04 +0900
Subject: [PATCH 06/10] Skip removed test for JSON.deep_const_get

---
 tool/rbs_skip_tests | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tool/rbs_skip_tests b/tool/rbs_skip_tests
index bdea3e59571b91..28133153739292 100644
--- a/tool/rbs_skip_tests
+++ b/tool/rbs_skip_tests
@@ -73,6 +73,8 @@ test_iconv(JSONSingletonTest)
 test_recurse_proc(JSONInstanceTest)
 test_recurse_proc(JSONSingletonTest)
 
+test_deep_const_get(JSONSingletonTest)
+
 CGITest CGI is retired
 CGISingletonTest CGI is retired
 

From a4c051b870ac7f7b3c5482baf05600e1f6751b47 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 29 Oct 2025 22:14:22 +0900
Subject: [PATCH 07/10] Remove PATH check

---
 file.c | 90 ----------------------------------------------------------
 1 file changed, 90 deletions(-)

diff --git a/file.c b/file.c
index 4fc2fec75f59a6..2c8e87b768e4db 100644
--- a/file.c
+++ b/file.c
@@ -6494,96 +6494,6 @@ rb_is_absolute_path(const char *path)
     return 0;
 }
 
-#ifndef ENABLE_PATH_CHECK
-# if defined DOSISH || defined __CYGWIN__
-#   define ENABLE_PATH_CHECK 0
-# else
-#   define ENABLE_PATH_CHECK 1
-# endif
-#endif
-
-#if ENABLE_PATH_CHECK
-static int
-path_check_0(VALUE path)
-{
-    struct stat st;
-    const char *p0 = StringValueCStr(path);
-    const char *e0;
-    rb_encoding *enc;
-    char *p = 0, *s;
-
-    if (!rb_is_absolute_path(p0)) {
-        char *buf = ruby_getcwd();
-        VALUE newpath;
-
-        newpath = rb_str_new2(buf);
-        xfree(buf);
-
-        rb_str_cat2(newpath, "/");
-        rb_str_cat2(newpath, p0);
-        path = newpath;
-        p0 = RSTRING_PTR(path);
-    }
-    e0 = p0 + RSTRING_LEN(path);
-    enc = rb_enc_get(path);
-    for (;;) {
-#ifndef S_IWOTH
-# define S_IWOTH 002
-#endif
-        if (STAT(p0, &st) == 0 && S_ISDIR(st.st_mode) && (st.st_mode & S_IWOTH)
-#ifdef S_ISVTX
-            && !(p && (st.st_mode & S_ISVTX))
-#endif
-            && !access(p0, W_OK)) {
-            rb_enc_warn(enc, "Insecure world writable dir %s in PATH, mode 0%"
-#if SIZEOF_DEV_T > SIZEOF_INT
-                        PRI_MODET_PREFIX"o",
-#else
-                        "o",
-#endif
-                        p0, st.st_mode);
-            if (p) *p = '/';
-            RB_GC_GUARD(path);
-            return 0;
-        }
-        s = strrdirsep(p0, e0, enc);
-        if (p) *p = '/';
-        if (!s || s == p0) return 1;
-        p = s;
-        e0 = p;
-        *p = '\0';
-    }
-}
-#endif
-
-int
-rb_path_check(const char *path)
-{
-    rb_warn_deprecated_to_remove_at(3.6, "rb_path_check", NULL);
-#if ENABLE_PATH_CHECK
-    const char *p0, *p, *pend;
-    const char sep = PATH_SEP_CHAR;
-
-    if (!path) return 1;
-
-    pend = path + strlen(path);
-    p0 = path;
-    p = strchr(path, sep);
-    if (!p) p = pend;
-
-    for (;;) {
-        if (!path_check_0(rb_str_new(p0, p - p0))) {
-            return 0;		/* not safe */
-        }
-        p0 = p + 1;
-        if (p0 > pend) break;
-        p = strchr(p0, sep);
-        if (!p) p = pend;
-    }
-#endif
-    return 1;
-}
-
 int
 ruby_is_fd_loadable(int fd)
 {

From f4e01783d3412b10f9978b5297142979cb067ce8 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 30 Oct 2025 14:14:58 +0900
Subject: [PATCH 08/10] Prism update for 4.0

---
 lib/prism/ffi.rb          |  2 ++
 prism/options.c           | 10 ++++++++++
 prism/options.h           |  5 ++++-
 test/prism/test_helper.rb |  2 +-
 4 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/lib/prism/ffi.rb b/lib/prism/ffi.rb
index a3bf5786bd67b7..f6ad6f98b1cb92 100644
--- a/lib/prism/ffi.rb
+++ b/lib/prism/ffi.rb
@@ -434,6 +434,8 @@ def dump_options_version(version)
         2
       when /\A3\.5(\.\d+)?\z/
         3
+      when /\A4\.0(\.\d+)?\z/
+        4
       else
         if current
           raise CurrentVersionError, RUBY_VERSION
diff --git a/prism/options.c b/prism/options.c
index 1b5c022cf54f9f..373d76a21fee45 100644
--- a/prism/options.c
+++ b/prism/options.c
@@ -93,6 +93,11 @@ pm_options_version_set(pm_options_t *options, const char *version, size_t length
             return true;
         }
 
+        if (strncmp(version, "4.0", 3) == 0) {
+            options->version = PM_OPTIONS_VERSION_CRUBY_4_0;
+            return true;
+        }
+
         return false;
     }
 
@@ -111,6 +116,11 @@ pm_options_version_set(pm_options_t *options, const char *version, size_t length
             options->version = PM_OPTIONS_VERSION_CRUBY_3_5;
             return true;
         }
+
+        if (strncmp(version, "4.0.", 4) == 0 && is_number(version + 4, length - 4)) {
+            options->version = PM_OPTIONS_VERSION_CRUBY_4_0;
+            return true;
+        }
     }
 
     if (length >= 6) {
diff --git a/prism/options.h b/prism/options.h
index 1a92c470f1ea7d..44cd745e15520d 100644
--- a/prism/options.h
+++ b/prism/options.h
@@ -94,8 +94,11 @@ typedef enum {
     /** The vendored version of prism in CRuby 3.5.x. */
     PM_OPTIONS_VERSION_CRUBY_3_5 = 3,
 
+    /** The vendored version of prism in CRuby 4.0.x. */
+    PM_OPTIONS_VERSION_CRUBY_4_0 = 4,
+
     /** The current version of prism. */
-    PM_OPTIONS_VERSION_LATEST = PM_OPTIONS_VERSION_CRUBY_3_5
+    PM_OPTIONS_VERSION_LATEST = PM_OPTIONS_VERSION_CRUBY_4_0
 } pm_options_version_t;
 
 /**
diff --git a/test/prism/test_helper.rb b/test/prism/test_helper.rb
index 84871722c9b6ad..faf6117668a404 100644
--- a/test/prism/test_helper.rb
+++ b/test/prism/test_helper.rb
@@ -230,7 +230,7 @@ def self.windows?
     end
 
     # All versions that prism can parse
-    SYNTAX_VERSIONS = %w[3.3 3.4 3.5]
+    SYNTAX_VERSIONS = %w[3.3 3.4 3.5 4.0]
 
     # Returns an array of ruby versions that a given filepath should test against:
     # test.txt         # => all available versions

From 996cae65f3cc8fed60c6bb758b00882cac49389d Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 30 Oct 2025 12:43:26 +0900
Subject: [PATCH 09/10] Depricate IO operation with `|`

---
 io.c                      | 35 +++------------------------
 test/ruby/test_io.rb      | 50 +++++++--------------------------------
 test/ruby/test_io_m17n.rb | 24 -------------------
 3 files changed, 11 insertions(+), 98 deletions(-)

diff --git a/io.c b/io.c
index 78ac0bb2c65d9e..5366c74c498332 100644
--- a/io.c
+++ b/io.c
@@ -8223,21 +8223,6 @@ rb_io_s_sysopen(int argc, VALUE *argv, VALUE _)
     return INT2NUM(fd);
 }
 
-static VALUE
-check_pipe_command(VALUE filename_or_command)
-{
-    char *s = RSTRING_PTR(filename_or_command);
-    long l = RSTRING_LEN(filename_or_command);
-    char *e = s + l;
-    int chlen;
-
-    if (rb_enc_ascget(s, e, &chlen, rb_enc_get(filename_or_command)) == '|') {
-        VALUE cmd = rb_str_new(s+chlen, l-chlen);
-        return cmd;
-    }
-    return Qnil;
-}
-
 /*
  *  call-seq:
  *    open(path, mode = 'r', perm = 0666, **opts)             -> io or nil
@@ -8283,13 +8268,7 @@ rb_f_open(int argc, VALUE *argv, VALUE _)
                 redirect = TRUE;
             }
             else {
-                VALUE cmd = check_pipe_command(tmp);
-                if (!NIL_P(cmd)) {
-                    // TODO: when removed in 4.0, update command_injection.rdoc
-                    rb_warn_deprecated_to_remove_at(4.0, "Calling Kernel#open with a leading '|'", "IO.popen");
-                    argv[0] = cmd;
-                    return rb_io_s_popen(argc, argv, rb_cIO);
-                }
+                argv[0] = tmp;
             }
         }
     }
@@ -8308,16 +8287,8 @@ static VALUE
 rb_io_open_generic(VALUE klass, VALUE filename, int oflags, enum rb_io_mode fmode,
                    const struct rb_io_encoding *convconfig, mode_t perm)
 {
-    VALUE cmd;
-    if (klass == rb_cIO && !NIL_P(cmd = check_pipe_command(filename))) {
-        // TODO: when removed in 4.0, update command_injection.rdoc
-        rb_warn_deprecated_to_remove_at(4.0, "IO process creation with a leading '|'", "IO.popen");
-        return pipe_open_s(cmd, rb_io_oflags_modestr(oflags), fmode, convconfig);
-    }
-    else {
-        return rb_file_open_generic(io_alloc(klass), filename,
-                                    oflags, fmode, convconfig, perm);
-    }
+    return rb_file_open_generic(io_alloc(klass), filename,
+                                oflags, fmode, convconfig, perm);
 }
 
 static VALUE
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 0025aa5a7dd502..dd8ccbc96a63a5 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2619,36 +2619,15 @@ def o.to_open(kw); kw; end
     assert_equal({:a=>1}, open(o, {a: 1}))
   end
 
-  def test_open_pipe
-    assert_deprecated_warning(/Kernel#open with a leading '\|'/) do # https://bugs.ruby-lang.org/issues/19630
-      open("|" + EnvUtil.rubybin, "r+") do |f|
-        f.puts "puts 'foo'"
-        f.close_write
-        assert_equal("foo\n", f.read)
-      end
-    end
-  end
+  def test_path_with_pipe
+    mkcdtmpdir do
+      cmd = "|echo foo"
+      assert_file.not_exist?(cmd)
 
-  def test_read_command
-    assert_deprecated_warning(/IO process creation with a leading '\|'/) do # https://bugs.ruby-lang.org/issues/19630
-      assert_equal("foo\n", IO.read("|echo foo"))
-    end
-    assert_raise(Errno::ENOENT, Errno::EINVAL) do
-      File.read("|#{EnvUtil.rubybin} -e puts")
-    end
-    assert_raise(Errno::ENOENT, Errno::EINVAL) do
-      File.binread("|#{EnvUtil.rubybin} -e puts")
-    end
-    assert_raise(Errno::ENOENT, Errno::EINVAL) do
-      Class.new(IO).read("|#{EnvUtil.rubybin} -e puts")
-    end
-    assert_raise(Errno::ENOENT, Errno::EINVAL) do
-      Class.new(IO).binread("|#{EnvUtil.rubybin} -e puts")
-    end
-    assert_raise(Errno::ESPIPE) do
-      assert_deprecated_warning(/IO process creation with a leading '\|'/) do # https://bugs.ruby-lang.org/issues/19630
-        IO.read("|#{EnvUtil.rubybin} -e 'puts :foo'", 1, 1)
-      end
+      pipe_errors = [Errno::ENOENT, Errno::EINVAL, Errno::EACCES, Errno::EPERM]
+      assert_raise(*pipe_errors) { open(cmd, "r+") }
+      assert_raise(*pipe_errors) { IO.read(cmd) }
+      assert_raise(*pipe_errors) { IO.foreach(cmd) {|x| assert false } }
     end
   end
 
@@ -2853,19 +2832,6 @@ def test_reopen_ivar
   end
 
   def test_foreach
-    a = []
-
-    assert_deprecated_warning(/IO process creation with a leading '\|'/) do # https://bugs.ruby-lang.org/issues/19630
-      IO.foreach("|" + EnvUtil.rubybin + " -e 'puts :foo; puts :bar; puts :baz'") {|x| a << x }
-    end
-    assert_equal(["foo\n", "bar\n", "baz\n"], a)
-
-    a = []
-    assert_deprecated_warning(/IO process creation with a leading '\|'/) do # https://bugs.ruby-lang.org/issues/19630
-      IO.foreach("|" + EnvUtil.rubybin + " -e 'puts :zot'", :open_args => ["r"]) {|x| a << x }
-    end
-    assert_equal(["zot\n"], a)
-
     make_tempfile {|t|
       a = []
       IO.foreach(t.path) {|x| a << x }
diff --git a/test/ruby/test_io_m17n.rb b/test/ruby/test_io_m17n.rb
index b01d627d920d7e..1986026bfb3d9c 100644
--- a/test/ruby/test_io_m17n.rb
+++ b/test/ruby/test_io_m17n.rb
@@ -1395,30 +1395,6 @@ def test_popenv_r_enc_enc_in_opt2
     }
   end
 
-  def test_open_pipe_r_enc
-    EnvUtil.suppress_warning do # https://bugs.ruby-lang.org/issues/19630
-      open("|#{EnvUtil.rubybin} -e 'putc 255'", "r:ascii-8bit") {|f|
-        assert_equal(Encoding::ASCII_8BIT, f.external_encoding)
-        assert_equal(nil, f.internal_encoding)
-        s = f.read
-        assert_equal(Encoding::ASCII_8BIT, s.encoding)
-        assert_equal("\xff".force_encoding("ascii-8bit"), s)
-      }
-    end
-  end
-
-  def test_open_pipe_r_enc2
-    EnvUtil.suppress_warning do # https://bugs.ruby-lang.org/issues/19630
-      open("|#{EnvUtil.rubybin} -e 'putc \"\\u3042\"'", "r:UTF-8") {|f|
-        assert_equal(Encoding::UTF_8, f.external_encoding)
-        assert_equal(nil, f.internal_encoding)
-        s = f.read
-        assert_equal(Encoding::UTF_8, s.encoding)
-        assert_equal("\u3042", s)
-      }
-    end
-  end
-
   def test_s_foreach_enc
     with_tmpdir {
       generate_file("t", "\xff")

From 1f32464a2dcaf641c9fd77a323a13e44dd1d2670 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Fri, 7 Nov 2025 17:57:55 +0900
Subject: [PATCH 10/10] Update Bundler::CurrentRuby::ALL_RUBY_VERSIONS

---
 lib/bundler/current_ruby.rb               |  2 +-
 spec/bundler/bundler/current_ruby_spec.rb | 14 +++++++-------
 spec/bundler/bundler/dsl_spec.rb          |  4 ++--
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/lib/bundler/current_ruby.rb b/lib/bundler/current_ruby.rb
index b350baa24fd528..abb7ca2195daa6 100644
--- a/lib/bundler/current_ruby.rb
+++ b/lib/bundler/current_ruby.rb
@@ -11,7 +11,7 @@ def self.current_ruby
   end
 
   class CurrentRuby
-    ALL_RUBY_VERSIONS = (18..27).to_a.concat((30..35).to_a).freeze
+    ALL_RUBY_VERSIONS = [*18..27, *30..34, *40].freeze
     KNOWN_MINOR_VERSIONS = ALL_RUBY_VERSIONS.map {|v| v.digits.reverse.join(".") }.freeze
     KNOWN_MAJOR_VERSIONS = ALL_RUBY_VERSIONS.map {|v| v.digits.last.to_s }.uniq.freeze
     PLATFORM_MAP = {
diff --git a/spec/bundler/bundler/current_ruby_spec.rb b/spec/bundler/bundler/current_ruby_spec.rb
index 83c42e73e1efe4..aa19a414076508 100644
--- a/spec/bundler/bundler/current_ruby_spec.rb
+++ b/spec/bundler/bundler/current_ruby_spec.rb
@@ -22,7 +22,7 @@
         ruby_32: Gem::Platform::RUBY,
         ruby_33: Gem::Platform::RUBY,
         ruby_34: Gem::Platform::RUBY,
-        ruby_35: Gem::Platform::RUBY,
+        ruby_40: Gem::Platform::RUBY,
         mri: Gem::Platform::RUBY,
         mri_18: Gem::Platform::RUBY,
         mri_19: Gem::Platform::RUBY,
@@ -39,7 +39,7 @@
         mri_32: Gem::Platform::RUBY,
         mri_33: Gem::Platform::RUBY,
         mri_34: Gem::Platform::RUBY,
-        mri_35: Gem::Platform::RUBY,
+        mri_40: Gem::Platform::RUBY,
         rbx: Gem::Platform::RUBY,
         truffleruby: Gem::Platform::RUBY,
         jruby: Gem::Platform::JAVA,
@@ -61,7 +61,7 @@
         windows_32: Gem::Platform::WINDOWS,
         windows_33: Gem::Platform::WINDOWS,
         windows_34: Gem::Platform::WINDOWS,
-        windows_35: Gem::Platform::WINDOWS }
+        windows_40: Gem::Platform::WINDOWS }
     end
 
     let(:deprecated) do
@@ -81,7 +81,7 @@
         mswin_32: Gem::Platform::MSWIN,
         mswin_33: Gem::Platform::MSWIN,
         mswin_34: Gem::Platform::MSWIN,
-        mswin_35: Gem::Platform::MSWIN,
+        mswin_40: Gem::Platform::MSWIN,
         mswin64: Gem::Platform::MSWIN64,
         mswin64_19: Gem::Platform::MSWIN64,
         mswin64_20: Gem::Platform::MSWIN64,
@@ -97,7 +97,7 @@
         mswin64_32: Gem::Platform::MSWIN64,
         mswin64_33: Gem::Platform::MSWIN64,
         mswin64_34: Gem::Platform::MSWIN64,
-        mswin64_35: Gem::Platform::MSWIN64,
+        mswin64_40: Gem::Platform::MSWIN64,
         mingw: Gem::Platform::UNIVERSAL_MINGW,
         mingw_18: Gem::Platform::UNIVERSAL_MINGW,
         mingw_19: Gem::Platform::UNIVERSAL_MINGW,
@@ -114,7 +114,7 @@
         mingw_32: Gem::Platform::UNIVERSAL_MINGW,
         mingw_33: Gem::Platform::UNIVERSAL_MINGW,
         mingw_34: Gem::Platform::UNIVERSAL_MINGW,
-        mingw_35: Gem::Platform::UNIVERSAL_MINGW,
+        mingw_40: Gem::Platform::UNIVERSAL_MINGW,
         x64_mingw: Gem::Platform::UNIVERSAL_MINGW,
         x64_mingw_20: Gem::Platform::UNIVERSAL_MINGW,
         x64_mingw_21: Gem::Platform::UNIVERSAL_MINGW,
@@ -129,7 +129,7 @@
         x64_mingw_32: Gem::Platform::UNIVERSAL_MINGW,
         x64_mingw_33: Gem::Platform::UNIVERSAL_MINGW,
         x64_mingw_34: Gem::Platform::UNIVERSAL_MINGW,
-        x64_mingw_35: Gem::Platform::UNIVERSAL_MINGW }
+        x64_mingw_40: Gem::Platform::UNIVERSAL_MINGW }
     end
     # rubocop:enable Naming/VariableNumber
 
diff --git a/spec/bundler/bundler/dsl_spec.rb b/spec/bundler/bundler/dsl_spec.rb
index e88033e9554240..286dfa71151877 100644
--- a/spec/bundler/bundler/dsl_spec.rb
+++ b/spec/bundler/bundler/dsl_spec.rb
@@ -201,8 +201,8 @@
   describe "#gem" do
     # rubocop:disable Naming/VariableNumber
     [:ruby, :ruby_18, :ruby_19, :ruby_20, :ruby_21, :ruby_22, :ruby_23, :ruby_24, :ruby_25, :ruby_26, :ruby_27,
-     :ruby_30, :ruby_31, :ruby_32, :ruby_33, :ruby_34, :ruby_35, :mri, :mri_18, :mri_19, :mri_20, :mri_21, :mri_22, :mri_23, :mri_24,
-     :mri_25, :mri_26, :mri_27, :mri_30, :mri_31, :mri_32, :mri_33, :mri_34, :mri_35, :jruby, :rbx, :truffleruby].each do |platform|
+     :ruby_30, :ruby_31, :ruby_32, :ruby_33, :ruby_34, :ruby_40, :mri, :mri_18, :mri_19, :mri_20, :mri_21, :mri_22, :mri_23, :mri_24,
+     :mri_25, :mri_26, :mri_27, :mri_30, :mri_31, :mri_32, :mri_33, :mri_34, :mri_40, :jruby, :rbx, :truffleruby].each do |platform|
       it "allows #{platform} as a valid platform" do
         subject.gem("foo", platform: platform)
       end