[PRISM] Fix popped for CallOperatorWriteNode

prism_compile.c

@@ -1655,7 +1655,7 @@ pm_compile_node(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *const ret,
             flag = VM_CALL_FCALL;
         }
 
-        PM_COMPILE(call_operator_write_node->receiver);
+        PM_COMPILE_NOT_POPPED(call_operator_write_node->receiver);
 
         ID write_name_id = pm_constant_id_lookup(scope_node, call_operator_write_node->write_name);
         ID read_name_id = pm_constant_id_lookup(scope_node, call_operator_write_node->read_name);
@@ -1664,7 +1664,7 @@ pm_compile_node(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *const ret,
 
         ADD_SEND_WITH_FLAG(ret, &dummy_line_node, read_name_id, INT2FIX(0), INT2FIX(flag));
 
-        PM_COMPILE(call_operator_write_node->value);
+        PM_COMPILE_NOT_POPPED(call_operator_write_node->value);
         ADD_SEND(ret, &dummy_line_node, operator_id, INT2FIX(1));
 
         if (!popped) {

test/ruby/test_compile_prism.rb

@@ -773,8 +773,8 @@ module Prism
     end
 
     def test_CallOperatorWriteNode
-=begin
       assert_prism_eval(<<-CODE
+        class PrismTestSubclass; end
         def PrismTestSubclass.test_call_operator_write_node
           2
         end
@@ -784,7 +784,6 @@ module Prism
         PrismTestSubclass.test_call_operator_write_node += 1
       CODE
       )
-=end
     end
 
     def test_ForwardingSuperNode