diff --git a/test/ruby/test_allocation.rb b/test/ruby/test_allocation.rb
index fef3111483..2b181b1bdc 100644
--- a/test/ruby/test_allocation.rb
+++ b/test/ruby/test_allocation.rb
@@ -524,6 +524,7 @@ class TestAllocation < Test::Unit::TestCase
     end
 
     def test_anonymous_splat_and_anonymous_keyword_splat_parameters
+      only_block = block.empty? ? block : block[2..]
       check_allocations(<<~RUBY)
         def self.anon_splat_and_anon_keyword_splat(*, **#{block}); end
 
@@ -556,6 +557,10 @@ class TestAllocation < Test::Unit::TestCase
         check_allocations(1, 1, "anon_splat_and_anon_keyword_splat(*array1, *empty_array, a: 2, **empty_hash#{block})")
         check_allocations(1, 1, "anon_splat_and_anon_keyword_splat(*array1, *empty_array, **hash1, **empty_hash#{block})")
 
+        check_allocations(0, 0, "anon_splat_and_anon_keyword_splat(#{only_block})")
+        check_allocations(0, 1, "anon_splat_and_anon_keyword_splat(a: 2#{block})")
+        check_allocations(0, 0, "anon_splat_and_anon_keyword_splat(**empty_hash#{block})")
+
         check_allocations(1, 1, "anon_splat_and_anon_keyword_splat(1, *empty_array, a: 2, **empty_hash#{block})")
         check_allocations(1, 1, "anon_splat_and_anon_keyword_splat(1, *empty_array, **hash1, **empty_hash#{block})")
         check_allocations(0, 1, "anon_splat_and_anon_keyword_splat(*array1, **empty_hash, a: 2#{block})")
@@ -570,6 +575,7 @@ class TestAllocation < Test::Unit::TestCase
     end
 
     def test_nested_anonymous_splat_and_anonymous_keyword_splat_parameters
+      only_block = block.empty? ? block : block[2..]
       check_allocations(<<~RUBY)
         def self.t(*, **#{block}); end
         def self.anon_splat_and_anon_keyword_splat(*, **#{block}); t(*, **) end
@@ -603,6 +609,10 @@ class TestAllocation < Test::Unit::TestCase
         check_allocations(1, 1, "anon_splat_and_anon_keyword_splat(*array1, *empty_array, a: 2, **empty_hash#{block})")
         check_allocations(1, 1, "anon_splat_and_anon_keyword_splat(*array1, *empty_array, **hash1, **empty_hash#{block})")
 
+        check_allocations(0, 0, "anon_splat_and_anon_keyword_splat(#{only_block})")
+        check_allocations(0, 1, "anon_splat_and_anon_keyword_splat(a: 2#{block})")
+        check_allocations(0, 0, "anon_splat_and_anon_keyword_splat(**empty_hash#{block})")
+
         check_allocations(1, 1, "anon_splat_and_anon_keyword_splat(1, *empty_array, a: 2, **empty_hash#{block})")
         check_allocations(1, 1, "anon_splat_and_anon_keyword_splat(1, *empty_array, **hash1, **empty_hash#{block})")
         check_allocations(0, 1, "anon_splat_and_anon_keyword_splat(*array1, **empty_hash, a: 2#{block})")
diff --git a/test/ruby/test_iseq.rb b/test/ruby/test_iseq.rb
index 337e575b2e..032f78f6a8 100644
--- a/test/ruby/test_iseq.rb
+++ b/test/ruby/test_iseq.rb
@@ -173,7 +173,7 @@ class TestISeq < Test::Unit::TestCase
     obj = Object.new
     def obj.foo(*) nil.instance_eval{ ->{super} } end
     assert_raise_with_message(Ractor::IsolationError, /refer unshareable object \[\] from variable '\*'/) do
-      Ractor.make_shareable(obj.foo)
+      Ractor.make_shareable(obj.foo(*[]))
     end
   end
 
diff --git a/vm_args.c b/vm_args.c
index 1303243fd3..a84540c61b 100644
--- a/vm_args.c
+++ b/vm_args.c
@@ -894,16 +894,21 @@ setup_parameters_complex(rb_execution_context_t * const ec, const rb_iseq_t * co
     }
 
     if (ISEQ_BODY(iseq)->param.flags.has_rest) {
-        args_setup_rest_parameter(args, locals + ISEQ_BODY(iseq)->param.rest_start);
-        VALUE ary = *(locals + ISEQ_BODY(iseq)->param.rest_start);
-        VALUE index = RARRAY_LEN(ary) - 1;
-        if (splat_flagged_keyword_hash &&
-            !ISEQ_BODY(iseq)->param.flags.ruby2_keywords &&
-            !ISEQ_BODY(iseq)->param.flags.has_kw &&
-            !ISEQ_BODY(iseq)->param.flags.has_kwrest &&
-            RARRAY_AREF(ary, index) == splat_flagged_keyword_hash) {
-            ((struct RHash *)rest_last)->basic.flags &= ~RHASH_PASS_AS_KEYWORDS;
-            RARRAY_ASET(ary, index, rest_last);
+        if (UNLIKELY(ISEQ_BODY(iseq)->param.flags.anon_rest && args->argc == 0 && !args->rest && !ISEQ_BODY(iseq)->param.flags.has_post)) {
+           *(locals + ISEQ_BODY(iseq)->param.rest_start) = args->rest = rb_cArray_empty_frozen;
+        }
+        else {
+            args_setup_rest_parameter(args, locals + ISEQ_BODY(iseq)->param.rest_start);
+            VALUE ary = *(locals + ISEQ_BODY(iseq)->param.rest_start);
+            VALUE index = RARRAY_LEN(ary) - 1;
+            if (splat_flagged_keyword_hash &&
+                !ISEQ_BODY(iseq)->param.flags.ruby2_keywords &&
+                !ISEQ_BODY(iseq)->param.flags.has_kw &&
+                !ISEQ_BODY(iseq)->param.flags.has_kwrest &&
+                RARRAY_AREF(ary, index) == splat_flagged_keyword_hash) {
+                ((struct RHash *)rest_last)->basic.flags &= ~RHASH_PASS_AS_KEYWORDS;
+                RARRAY_ASET(ary, index, rest_last);
+            }
         }
     }