Speaking of 5.0 (was RE: Memory leak in Lua 5.0)

["Brownsword, Andrew" <ABrownswor@...>]

Where is the link to download 5.0?  Is it still alpha?


-----Original Message-----
From: Jeff Petkau [mailto:jeffp@adrenium.com]
Sent: Monday, September 30, 2002 11:08 AM
To: Multiple recipients of list
Subject: Memory leak in Lua 5.0


I noticed a problem in Lua 5.0's garbage collection.
If a coroutine has a reference to a table, and the
table has a reference back to the coroutine, they
will not be garbage collected even when they become
unreachable.

Is this a known bug?

Here's a simple demo.

----
function test()
    local t = {}
    local f = function()
        print(t)
    end
    t.f = coroutine.create(f)
end

collectgarbage()
print(gcinfo())

for i=1,100000 do test() end

collectgarbage()
print(gcinfo())
---

--Jeff Petkau