[PRISM] Fix popped for AssocSplatNode

prism_compile.c

@@ -2400,7 +2400,7 @@ pm_compile_node(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *const ret,
             int elements_of_cur_type = 0;
             int allocated_hashes = 0;
 
-            if (!PM_NODE_TYPE_P(cur_node, PM_ASSOC_NODE)) {
+            if (!PM_NODE_TYPE_P(cur_node, PM_ASSOC_NODE) && !popped) {
                 ADD_INSN1(ret, &dummy_line_node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
                 ADD_INSN1(ret, &dummy_line_node, newhash, INT2FIX(0));
                 allocated_hashes++;
@@ -2435,6 +2435,9 @@ pm_compile_node(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *const ret,
                         PM_COMPILE(elements->nodes[index]);
                     }
                 }
+                else {
+                    PM_COMPILE(elements->nodes[index]);
+                }
             }
 
             if (!popped) {

test/ruby/test_compile_prism.rb

@@ -441,11 +441,9 @@ module Prism
     end
 
     def test_AssocSplatNode
-=begin
       assert_prism_eval("foo = { a: 1 }; { **foo }")
       assert_prism_eval("foo = { a: 1 }; bar = foo; { **foo, b: 2, **bar, c: 3 }")
       assert_prism_eval("foo = { a: 1 }; { b: 2, **foo, c: 3}")
-=end
     end
 
     def test_HashNode