Merge pull request #71107 from vnen/gdscript-fix-nil-address-assign

GDScript: Don't use the NIL address to hold return value of functions

modules/gdscript/tests/scripts/runtime/features/await_on_void.gd

@@ -0,0 +1,7 @@
+func wait() -> void:
+	pass
+
+func test():
+	@warning_ignore(redundant_await)
+	await wait()
+	print("end")

modules/gdscript/tests/scripts/runtime/features/await_on_void.out

@@ -0,0 +1,2 @@
+GDTEST_OK
+end

modules/gdscript/tests/scripts/runtime/features/standalone-calls-do-not-write-to-nil.gd

@@ -0,0 +1,45 @@
+# https://github.com/godotengine/godot/issues/70964
+
+func test():
+	test_construct(0, false)
+	test_utility(0, false)
+	test_builtin_call(Vector2.UP, false)
+	test_builtin_call_validated(Vector2.UP, false)
+	test_object_call(RefCounted.new(), false)
+	test_object_call_method_bind(Resource.new(), false)
+	test_object_call_ptrcall(RefCounted.new(), false)
+
+	print("end")
+
+func test_construct(v, f):
+	Vector2(v, v) # Built-in type construct.
+	assert(not f) # Test unary operator reading from `nil`.
+
+func test_utility(v, f):
+	abs(v) # Utility function.
+	assert(not f) # Test unary operator reading from `nil`.
+
+func test_builtin_call(v, f):
+	@warning_ignore(unsafe_method_access)
+	v.angle() # Built-in method call.
+	assert(not f) # Test unary operator reading from `nil`.
+
+func test_builtin_call_validated(v: Vector2, f):
+	@warning_ignore(return_value_discarded)
+	v.abs() # Built-in method call validated.
+	assert(not f) # Test unary operator reading from `nil`.
+
+func test_object_call(v, f):
+	@warning_ignore(unsafe_method_access)
+	v.get_reference_count() # Native type method call.
+	assert(not f) # Test unary operator reading from `nil`.
+
+func test_object_call_method_bind(v: Resource, f):
+	@warning_ignore(return_value_discarded)
+	v.duplicate() # Native type method call with MethodBind.
+	assert(not f) # Test unary operator reading from `nil`.
+
+func test_object_call_ptrcall(v: RefCounted, f):
+	@warning_ignore(return_value_discarded)
+	v.get_reference_count() # Native type method call with ptrcall.
+	assert(not f) # Test unary operator reading from `nil`.

modules/gdscript/tests/scripts/runtime/features/standalone-calls-do-not-write-to-nil.out

@@ -0,0 +1,2 @@
+GDTEST_OK
+end