Ensure super(**kw, &block) calls kw.to_hash before block.to_proc

Similar as previous commit, but handles the super case with
explicit arguments.

compile.c

@@ -9229,6 +9229,9 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
         VALUE vargc = setup_args(iseq, args, RNODE_SUPER(node)->nd_args, &flag, &keywords);
         CHECK(!NIL_P(vargc));
         argc = FIX2INT(vargc);
+        if ((flag & VM_CALL_ARGS_BLOCKARG) && (flag & VM_CALL_KW_SPLAT) && !(flag & VM_CALL_KW_SPLAT_MUT)) {
+            ADD_INSN(args, node, splatkw);
+        }
     }
     else {
         /* NODE_ZSUPER */

test/ruby/test_call.rb

@@ -164,6 +164,26 @@ def self.t(...) end
     assert_equal([:to_a, :to_hash, :to_proc], ary)
   end
 
+  def test_kwsplat_block_order_super
+    def self.t(splat)
+      o = Object.new
+      ary = []
+      o.define_singleton_method(:to_a) {ary << :to_a; []}
+      o.define_singleton_method(:to_hash) {ary << :to_hash; {}}
+      o.define_singleton_method(:to_proc) {ary << :to_proc; lambda{}}
+      if splat
+        super(*o, **o, &o)
+      else
+        super(**o, &o)
+      end
+      ary
+    end
+    extend Module.new{def t(...) end}
+
+    assert_equal([:to_hash, :to_proc], t(false))
+    assert_equal([:to_a, :to_hash, :to_proc], t(true))
+  end
+
   OVER_STACK_LEN = (ENV['RUBY_OVER_STACK_LEN'] || 150).to_i # Greater than VM_ARGC_STACK_MAX
   OVER_STACK_ARGV = OVER_STACK_LEN.times.to_a.freeze