GDScript: Fix type conversion in assignment with operation

3 files changed, 28 insertions, 21 deletions

diff --git a/modules/gdscript/gdscript_compiler.cpp b/modules/gdscript/gdscript_compiler.cpp
index dea2225e91..7ce19f5adc 100644
--- a/modules/gdscript/gdscript_compiler.cpp
+++ b/modules/gdscript/gdscript_compiler.cpp
@@ -1144,7 +1144,7 @@ int GDScriptCompiler::_parse_expression(CodeGen &codegen, const GDScriptParser::
 
 						GDScriptDataType assign_type = _gdtype_from_datatype(on->arguments[0]->get_datatype());
 
-						if (assign_type.has_type && !on->arguments[1]->get_datatype().has_type) {
+						if (assign_type.has_type && !on->datatype.has_type) {
 							// Typed assignment
 							switch (assign_type.kind) {
 								case GDScriptDataType::BUILTIN: {
diff --git a/modules/gdscript/gdscript_function.cpp b/modules/gdscript/gdscript_function.cpp
index 0a01321851..4518a5be4b 100644
--- a/modules/gdscript/gdscript_function.cpp
+++ b/modules/gdscript/gdscript_function.cpp
@@ -764,15 +764,17 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
 				GET_VARIANT_PTR(dst, 2);
 				GET_VARIANT_PTR(src, 3);
 
-#ifdef DEBUG_ENABLED
 				Variant::Type var_type = (Variant::Type)_code_ptr[ip + 1];
 				GD_ERR_BREAK(var_type < 0 || var_type >= Variant::VARIANT_MAX);
 
 				if (src->get_type() != var_type) {
+#ifdef DEBUG_ENABLED
 					if (Variant::can_convert_strict(src->get_type(), var_type)) {
+#endif // DEBUG_ENABLED
 						Variant::CallError ce;
 						*dst = Variant::construct(var_type, const_cast<const Variant **>(&src), 1, ce);
 					} else {
+#ifdef DEBUG_ENABLED
 						err_text = "Trying to assign value of type '" + Variant::get_type_name(src->get_type()) +
 								   "' to a variable of type '" + Variant::get_type_name(var_type) + "'.";
 						OPCODE_BREAK;
@@ -780,9 +782,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
 				} else {
 #endif // DEBUG_ENABLED
 					*dst = *src;
-#ifdef DEBUG_ENABLED
 				}
-#endif // DEBUG_ENABLED
 
 				ip += 4;
 			}
diff --git a/modules/gdscript/gdscript_parser.cpp b/modules/gdscript/gdscript_parser.cpp
index ef1a282e51..4405393b96 100644
--- a/modules/gdscript/gdscript_parser.cpp
+++ b/modules/gdscript/gdscript_parser.cpp
@@ -8185,7 +8185,9 @@ void GDScriptParser::_check_block_types(BlockNode *p_block) {
 						}
 #endif // DEBUG_ENABLED
 
+						bool type_match = check_types;
 						if (check_types && !_is_type_compatible(lh_type, rh_type)) {
+							type_match = false;
 							// Try supertype test
 							if (_is_type_compatible(rh_type, lh_type)) {
 								_mark_line_as_unsafe(op->line);
@@ -8197,23 +8199,27 @@ void GDScriptParser::_check_block_types(BlockNode *p_block) {
 											op->line);
 									return;
 								}
-								// Replace assignment with implicit conversion
-								BuiltInFunctionNode *convert = alloc_node<BuiltInFunctionNode>();
-								convert->line = op->line;
-								convert->function = GDScriptFunctions::TYPE_CONVERT;
-
-								ConstantNode *tgt_type = alloc_node<ConstantNode>();
-								tgt_type->line = op->line;
-								tgt_type->value = (int)lh_type.builtin_type;
-
-								OperatorNode *convert_call = alloc_node<OperatorNode>();
-								convert_call->line = op->line;
-								convert_call->op = OperatorNode::OP_CALL;
-								convert_call->arguments.push_back(convert);
-								convert_call->arguments.push_back(op->arguments[1]);
-								convert_call->arguments.push_back(tgt_type);
-
-								op->arguments.write[1] = convert_call;
+								if (op->op == OperatorNode::OP_ASSIGN) {
+									// Replace assignment with implicit conversion
+									BuiltInFunctionNode *convert = alloc_node<BuiltInFunctionNode>();
+									convert->line = op->line;
+									convert->function = GDScriptFunctions::TYPE_CONVERT;
+
+									ConstantNode *tgt_type = alloc_node<ConstantNode>();
+									tgt_type->line = op->line;
+									tgt_type->value = (int)lh_type.builtin_type;
+
+									OperatorNode *convert_call = alloc_node<OperatorNode>();
+									convert_call->line = op->line;
+									convert_call->op = OperatorNode::OP_CALL;
+									convert_call->arguments.push_back(convert);
+									convert_call->arguments.push_back(op->arguments[1]);
+									convert_call->arguments.push_back(tgt_type);
+
+									op->arguments.write[1] = convert_call;
+
+									type_match = true; // Since we are converting, the type is matching
+								}
 #ifdef DEBUG_ENABLED
 								if (lh_type.builtin_type == Variant::INT && rh_type.builtin_type == Variant::REAL) {
 									_add_warning(GDScriptWarning::NARROWING_CONVERSION, op->line);
@@ -8226,6 +8232,7 @@ void GDScriptParser::_check_block_types(BlockNode *p_block) {
 							_mark_line_as_unsafe(op->line);
 						}
 #endif // DEBUG_ENABLED
+						op->datatype.has_type = type_match;
 					} break;
 					case OperatorNode::OP_CALL:
 					case OperatorNode::OP_PARENT_CALL: {