1 files changed, 19 insertions, 12 deletions

diff --git a/modules/gdscript/gdscript_compiler.cpp b/modules/gdscript/gdscript_compiler.cpp
index 947224e93e..9eee0b57f3 100644
--- a/modules/gdscript/gdscript_compiler.cpp
+++ b/modules/gdscript/gdscript_compiler.cpp
@@ -1019,25 +1019,32 @@ GDScriptCodeGenerator::Address GDScriptCompiler::_parse_expression(CodeGen &code
 				}
 			} else if (assignment->assignee->type == GDScriptParser::Node::IDENTIFIER && _is_class_member_property(codegen, static_cast<GDScriptParser::IdentifierNode *>(assignment->assignee)->name)) {
 				// Assignment to member property.
-				GDScriptCodeGenerator::Address assigned = _parse_expression(codegen, r_error, assignment->assigned_value);
+				GDScriptCodeGenerator::Address assigned_value = _parse_expression(codegen, r_error, assignment->assigned_value);
 				if (r_error) {
 					return GDScriptCodeGenerator::Address();
 				}
-				GDScriptCodeGenerator::Address assign_temp = assigned;
+
+				GDScriptCodeGenerator::Address to_assign = assigned_value;
+				bool has_operation = assignment->operation != GDScriptParser::AssignmentNode::OP_NONE;
 
 				StringName name = static_cast<GDScriptParser::IdentifierNode *>(assignment->assignee)->name;
 
-				if (assignment->operation != GDScriptParser::AssignmentNode::OP_NONE) {
+				if (has_operation) {
+					GDScriptCodeGenerator::Address op_result = codegen.add_temporary();
 					GDScriptCodeGenerator::Address member = codegen.add_temporary();
 					gen->write_get_member(member, name);
-					gen->write_binary_operator(assigned, assignment->variant_op, member, assigned);
-					gen->pop_temporary();
+					gen->write_binary_operator(op_result, assignment->variant_op, member, assigned_value);
+					gen->pop_temporary(); // Pop member temp.
+					to_assign = op_result;
 				}
 
-				gen->write_set_member(assigned, name);
+				gen->write_set_member(to_assign, name);
 
-				if (assign_temp.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
-					gen->pop_temporary();
+				if (to_assign.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
+					gen->pop_temporary(); // Pop the assigned expression or the temp result if it has operation.
+				}
+				if (has_operation && assigned_value.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
+					gen->pop_temporary(); // Pop the assigned expression if not done before.
 				}
 			} else {
 				// Regular assignment.
@@ -2193,8 +2200,8 @@ Error GDScriptCompiler::_parse_class_level(GDScript *p_script, const GDScriptPar
 	p_script->_base = nullptr;
 	p_script->members.clear();
 	p_script->constants.clear();
-	for (Map<StringName, GDScriptFunction *>::Element *E = p_script->member_functions.front(); E; E = E->next()) {
-		memdelete(E->get());
+	for (const KeyValue<StringName, GDScriptFunction *> &E : p_script->member_functions) {
+		memdelete(E.value);
 	}
 	p_script->member_functions.clear();
 	p_script->member_indices.clear();
@@ -2519,8 +2526,8 @@ Error GDScriptCompiler::_parse_class_blocks(GDScript *p_script, const GDScriptPa
 					instance->owner = E->get();
 
 					//needed for hot reloading
-					for (Map<StringName, GDScript::MemberInfo>::Element *F = p_script->member_indices.front(); F; F = F->next()) {
-						instance->member_indices_cache[F->key()] = F->get().index;
+					for (const KeyValue<StringName, GDScript::MemberInfo> &F : p_script->member_indices) {
+						instance->member_indices_cache[F.key] = F.value.index;
 					}
 					instance->owner->set_script_instance(instance);