Version of OpenTTD

2019-12-07 master (win7 32-bit)

Expected result

When an AI triggers an out of memory error when the game is saved, the emergency save is successful. When the emergency save is loaded, the AI that triggered the out of memory error is reloaded without saved data (as if a different AI was loaded in its place).

Actual result

When an AI triggers an out of memory error when the game is saved, the emergency save triggers the same out of memory error. The emergency save is empty.

Steps to reproduce

1. Put the following code in an AI (or Game Script):

function AIController::Save() {
	array(1e9);
}

2. Run the AI with the above code.
3. The game will crash with an Out of Memory error.
4. Attempt an emergency save.
5. The game will crash again with the same Out of Memory error.
6. Check the emergency save. The file is empty (size: 0 bytes).