`A ^= B` is not the same as `A = A ^ B` when A is a real

[YellowAfterlife]

Description

Given the following,

function scr_a_bug() {
	var i, k = 1 << 53;
	i = 2147483647;
	show_debug_message($"i: {i}, is_real: {is_real(i)}, is_int64: {is_int64(i)}");
	i = i ^ k;
	show_debug_message($"i: {i}, is_real: {is_real(i)}, is_int64: {is_int64(i)}");
	i = 2147483647;
	i ^= k;
	show_debug_message($"i: {i}, is_real: {is_real(i)}, is_int64: {is_int64(i)}");
}

The output is

i: 2147483647, is_real: 1, is_int64: 0
i: 9007201402224639, is_real: 0, is_int64: 1
i: 9007201402224640, is_real: 1, is_int64: 0

Which is a little unexpected.

Project file

Expected Change

No response

Steps To Reproduce

1. Open the test project
2. Run in either VM or YYC
3. Observe

How reliably can you recreate this issue using your steps above?

Always

Which version of GameMaker are you reporting this issue for?

2024.11.0 (Monthly)

Which platform(s) are you seeing the problem on?

Windows

Sample Package Attached?

• I have attached my bug package

Sample Project Added?

• I have included a small sample project

[rwkay]

Fixed in 2024.13

[mgeddesGM]

verified as of IDE v2024.1300.0.768 Runtime v2024.1300.0.775