Numeric key collision related bug in Lua 5.3

[Egor Skriptunoff <egor.skriptunoff@...>]

Hi!

An interesting bug has been found in Lua 5.3

t = {[(1<<63)-333] = 0}
key = next(t) + 0.0
t[key] = "Lua is great!"
print(t[key])          --> Lua is great!
t[0] = "Are you sure?"
print(t[key])          --> nil

Why Lua is not great anymore?

-- Egor