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dis-bench / src /lua /seeds /heavy.lua
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-- $Id: testes/heavy.lua,v $
-- See Copyright Notice in file lua.h
local function teststring ()
print("creating a string too long")
do
local a = "x"
local st, msg = pcall(function ()
while true do
a = a .. a.. a.. a.. a.. a.. a.. a.. a.. a
.. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
.. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
.. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
.. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
.. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
.. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
.. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
.. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
.. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
print(string.format("string with %d bytes", #a))
end
end)
assert(not st and
(string.find(msg, "string length overflow") or
string.find(msg, "not enough memory")))
print("string length overflow with " .. #a * 100)
end
print('+')
end
local function loadrep (x, what)
local p = 1<<20
local s = string.rep(x, p)
local count = 0
local function f()
count = count + p
if count % (0x80*p) == 0 then
io.stderr:write("(", count // 2^20, " M)")
end
return s
end
local st, msg = load(f, "=big")
print("\nmemory: ", collectgarbage'count' * 1024)
msg = string.match(msg, "^[^\n]+") -- get only first line
print(string.format("total: 0x%x %s ('%s')", count, what, msg))
return st, msg
end
function controlstruct ()
print("control structure too long")
local lim = ((1 << 24) - 2) // 3
local s = string.rep("a = a + 1\n", lim)
s = "while true do " .. s .. "end"
assert(load(s))
print("ok with " .. lim .. " lines")
lim = lim + 3
s = string.rep("a = a + 1\n", lim)
s = "while true do " .. s .. "end"
local st, msg = load(s)
assert(not st and string.find(msg, "too long"))
print(msg)
end
function manylines ()
print("loading chunk with too many lines")
local st, msg = loadrep("\n", "lines")
assert(not st and string.find(msg, "too many lines"))
print('+')
end
function hugeid ()
print("loading chunk with huge identifier")
local st, msg = loadrep("a", "chars")
assert(not st and
(string.find(msg, "lexical element too long") or
string.find(msg, "not enough memory")))
print('+')
end
function toomanyinst ()
print("loading chunk with too many instructions")
local st, msg = loadrep("a = 10; ", "instructions")
print('+')
end
local function loadrepfunc (prefix, f)
local count = -1
local function aux ()
count = count + 1
if count == 0 then
return prefix
else
if count % (0x100000) == 0 then
io.stderr:write("(", count // 2^20, " M)")
end
return f(count)
end
end
local st, msg = load(aux, "k")
print("\nmemory: ", collectgarbage'count' * 1024)
msg = string.match(msg, "^[^\n]+") -- get only first line
print("expected error: ", msg)
end
function toomanyconst ()
print("loading function with too many constants")
loadrepfunc("function foo () return {0,",
function (n)
-- convert 'n' to a string in the format [["...",]],
-- where '...' is a kind of number in base 128
-- (in a range that does not include either the double quote
-- and the escape.)
return string.char(34,
((n // 128^0) & 127) + 128,
((n // 128^1) & 127) + 128,
((n // 128^2) & 127) + 128,
((n // 128^3) & 127) + 128,
((n // 128^4) & 127) + 128,
34, 44)
end)
end
function toomanystr ()
local a = {}
local st, msg = pcall(function ()
for i = 1, math.huge do
if i % (0x100000) == 0 then
io.stderr:write("(", i // 2^20, " M)")
end
a[i] = string.pack("I", i)
end
end)
local size = #a
a = collectgarbage'count'
print("\nmemory:", a * 1024)
print("expected error:", msg)
print("size:", size)
end
function toomanyidx ()
local a = {}
local st, msg = pcall(function ()
for i = 1, math.huge do
if i % (0x100000) == 0 then
io.stderr:write("(", i // 2^20, " M)")
end
a[i] = i
end
end)
print("\nmemory: ", collectgarbage'count' * 1024)
print("expected error: ", msg)
print("size:", #a)
end
-- teststring()
-- controlstruct()
-- manylines()
-- hugeid()
-- toomanyinst()
-- toomanyconst()
-- toomanystr()
toomanyidx()
print "OK"