Blender forces computer to reboot after mistyping extreme value for resolution icosphere After that I added an icosphere and wanted to change the resolution from 2 to 5, I stupidly mistyped the 5 to 45, so Blender freezes up and forced my computer to reboot. I didn't save the file so I had to redo a lot. Is it possible that Blender saves the file or makes a notification, when it sees that the input value is too much, before executing?
Fixed as rB60575480 (now max possible value is 10 here, which already means 2.6M vertices…).

But please next time report such issues on our bug tracker.